JP6377190B2 - Control device and control method for rotating electrical machine - Google Patents

Description

  The present invention relates to a control device and a control method for a rotating electrical machine mounted on a vehicle such as an automobile. More specifically, the present invention operates as a starter motor when an internal combustion engine is started, and assists the torque of the internal combustion engine after the internal combustion engine is started. The present invention relates to a control apparatus and a control method for a rotating electrical machine for a vehicle that operates as an electric motor and operates as a generator driven by an internal combustion engine.

  In recent years, the number of vehicles that employ an idle stop system that stops an internal combustion engine when the vehicle stops or vehicles that assist the torque of the internal combustion engine using an electric motor are increasing due to the flow of fuel efficiency regulations of automobiles. In these vehicles, the internal combustion engine and the rotating electrical machine are always coupled by a power transmission member such as a belt or a chain, and in addition to a start function and a torque assist function for starting the internal combustion engine, the vehicle is running or decelerating. Attention has been focused on a rotating electric machine as a so-called generator motor having a power generation function.

  The above-described rotating electrical machine has the function of an electric motor in a conventional generator, so that it is not necessary to mount an electric motor separately from the generator, and a space for mounting the electric motor can be eliminated. Further, by providing the rotating electrical machine with the torque assist function of the internal combustion engine and the energy regeneration function when the vehicle is decelerated, the fuel efficiency of the vehicle can be improved.

  Such a vehicular rotating electrical machine has a function as an electric motor (hereinafter referred to as an electric power function) and a function as a generator (hereinafter referred to as an electric power generation function). Since the electric function depends on the state of charge of the battery as the in-vehicle power supply device, charging of the battery with the power generation function is emphasized.

  When using the power generation function described above, the field current flowing in the rotor field winding is controlled to generate a constant voltage in the stator armature winding, and the rotating electrical machine is operated as a constant voltage generator. . For example, if a field current is passed through the field winding and the induced voltage generated in the armature winding of the stator is higher than the battery voltage as the power supply voltage, power conversion between the rotating electrical machine and the battery A diode that performs diode rectification using a synchronous power generation mode in which a power conversion element (for example, a MOSFET) that constitutes an inverter unit serving as a power conversion unit is turned on only during a period in which a current can be passed, or a parasitic diode of the power conversion element Power is generated in power generation mode. In addition, when the voltage generated in the armature winding is lower than the power supply voltage, it is known to generate power using an inverter power generation mode in which power is generated by boosting the voltage of the armature winding by a power conversion unit. .

  In such a rotating electrical machine, it is well known to generate power by appropriately switching the above-described power generation mode when using the power generation function (see, for example, Patent Document 1). In the conventional vehicle rotating electrical machine disclosed in Patent Document 1, when the rotating electrical machine functions as a charging generator, the control means performs phase control from the inverter to the armature winding when the rotational speed of the rotating electrical machine is below a predetermined value. When the rotational speed of the rotating electrical machine is equal to or higher than a predetermined value, the operation of the inverter is stopped, and the current supplied to the field winding is controlled by the field current control means to thereby generate a predetermined target voltage. It is controlled to generate electricity.

JP 2003-61399 A

  Normally, in the inverter power generation mode, it is necessary to perform PWM (Pulse Width Modulation) control of the inverter in order to boost the voltage generated in the armature winding. In PWM control, the power conversion element is switched at a high frequency on the order of kHz, such as 10 to 20 [kHz], and there is a problem that switching loss in the power conversion element increases and heat generation of the power conversion element increases. . On the other hand, in the synchronous power generation mode, since the power conversion element is turned on only in the section in which the stator winding can be energized, in the rectangular wave, on / off is performed only once in one electrical angle cycle, and conduction loss occurs but switching loss occurs. There is an advantage that can be reduced. Therefore, the synchronous power generation mode has an advantage that the power generation efficiency can be higher than that of the inverter power generation mode.

  However, the conventional technique disclosed in Patent Document 1 has the following problems. That is, mode switching during power generation, for example, switching between synchronous power generation mode or diode power generation mode and inverter power generation mode is performed only with the rotational speed of the rotor of the rotating electrical machine as a threshold value, and therefore an operating point with good power generation efficiency is not necessarily required. In other words, power generation is not performed at this time, and power generation efficiency may decrease.

In addition, if inverter power generation is performed with a command received from a host controller such as an ECU (Engine Control Unit) in a high-temperature atmosphere, the temperature of the inverter unit as the power conversion unit becomes high due to large heat generation of the power conversion element. The inverter operation may stop due to overheating protection of the inverter unit, and the power generation operation may stop. When the operation of the inverter unit stops, both the electric function and the power generation function stop, and there is a problem that the rotating electrical machine cannot operate until the operation stop of the inverter unit is released.

  The present invention has been made in order to solve the above-described problems in a conventional rotating electrical machine control device, and provides a rotating electrical machine control device and a control method capable of operating the rotating electrical machine in a highly efficient power generation mode. The purpose is to do.

A control device for a rotating electrical machine according to the present invention includes:
An electric function including a stator portion having an armature winding and a rotor portion having a field winding, and operating as a motor, and generating as a generator when the rotor portion is rotated by an external force A rotating machine unit with functions,
A power conversion unit including an armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and a field power conversion unit that controls a field current flowing in the field winding;
A rotation sensor for detecting the rotation speed of the rotor part;
A power converter temperature detector for detecting the temperature of the power converter;
A control unit for controlling the power conversion unit;
A power generation control map stored in the control unit and storing a plurality of power generation modes for operating the rotating machine unit as the generator;
With
The power generation control map includes a power generation control map for each detected temperature storing a power generation output corresponding to the temperature of the power conversion unit,
The control unit, based on the power generation mode read from the power generation control map corresponding to the number of rotations of the rotor portion detected by the rotation sensor and the induced voltage induced in the armature winding, Based on the power generation output that is configured to control the power conversion unit and read from the power generation control map for each detected temperature corresponding to the temperature of the power conversion unit detected by the power conversion unit temperature detector, Configured to control the power converter ,
It is characterized by that.

Moreover, the control method of the rotating electrical machine according to the present invention is as follows:
An electric function including a stator portion having an armature winding and a rotor portion having a field winding, and operating as a motor, and generating as a generator when the rotor portion is rotated by an external force A rotating machine unit with functions,
A power conversion unit including an armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and a field power conversion unit that controls a field current flowing in the field winding;
A method of controlling a rotating electrical machine comprising:
A power generation mode corresponding to the number of rotations of the rotor portion and the induced voltage induced in the armature winding is read from a power generation control map storing a plurality of power generation modes , and the power conversion unit is controlled , and The power generation control map includes a detection temperature-specific power generation control map that stores a power generation output corresponding to the temperature of the power conversion unit, and the power generation output corresponding to the detected temperature of the power conversion unit is detected by the detected temperature To control the power conversion unit by reading from
It is characterized by that.

A control device for a rotating electrical machine according to the present invention includes a stator portion having an armature winding and a rotor portion having a field winding, and the rotor portion is rotated by an electric function operating as an electric motor and an external force. A rotating machine unit having a power generation function that operates as a generator when operated, an armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and a field current that flows in the field winding A power conversion unit including a field power conversion unit that controls current, a rotation sensor that detects a rotation speed of the rotor unit, a power conversion unit temperature detector that detects a temperature of the power conversion unit, and a control unit for controlling the power conversion unit, stored in the control unit, the rotating machine part and a power generation control map storing a plurality of power modes for operating as the generator, the generator control map, the power Record the power generation output corresponding to the temperature of the converter. And includes a detection temperature by the power generation control map has, the control unit, the power generation control map corresponding to the voltage induced rotational speed of the rotor portion which is detected and by the rotation sensor to the armature winding The power conversion unit configured to control the power conversion unit based on the power generation mode read from the power generation unit , and the power generation control for each detected temperature corresponding to the temperature of the power conversion unit detected by the power conversion unit temperature detector Since the power conversion unit is configured to be controlled based on the power generation output read from the map, the power generation operation is determined from the power generation control map based on the information from the power conversion unit temperature detector . Can be selected for efficient power generation operation.

According to the method for controlling a rotating electrical machine according to the present invention, the rotor portion includes an stator function having an armature winding and a rotor portion having a field winding, and operates as an electric motor. A rotating machine unit having a power generation function that operates as a generator when the unit is rotated, an armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and the field winding And a power converter having a field power converter for controlling a field current flowing in the rotor, wherein the rotational speed of the rotor and the armature winding are induced. A power generation mode corresponding to the induced voltage is read from a power generation control map storing a plurality of power generation modes to control the power conversion unit , and the power generation control map displays a power generation output corresponding to the temperature of the power conversion unit. Includes power generation control map for each detected temperature And it controls the power conversion unit the power generation output corresponding to the detected temperature of the power conversion unit reads from the detection temperature by the power generation control map, the information from the power conversion unit temperature detector, power from the power generation control map By selecting the synchronous power generation mode and the inverter power generation mode, the operation can be performed efficiently.

It is a block diagram which shows an example of the power supply system of the vehicle carrying the control apparatus of the rotary electric machine by Embodiment 1 of this invention. It is a block diagram which shows the control apparatus of the rotary electric machine by Embodiment 1 of this invention. It is a circuit diagram which shows the power conversion part in the control apparatus of the rotary electric machine by Embodiment 1 of this invention.

  A rotating electrical machine to which a control device and a control method for a rotating electrical machine according to the present invention are applied includes, for example, a rotating machine unit including a stator unit and a rotor unit, a power conversion unit, and a control for controlling the power conversion unit. Are integrally formed. The rotor of the rotating machine unit is always coupled to an internal combustion engine mounted on the vehicle by a torque transmission member such as a belt or a chain.

In the control apparatus and control method for a rotating electrical machine according to the present invention, when the rotating electrical machine is operated as an electric motor, the control unit controls the power conversion unit to operate as an inverter. The power conversion unit that operates as an inverter converts DC power from a battery as a power supply device into, for example, three-phase AC power, and supplies the three-phase AC power to armature windings provided on the stator of the rotating machine unit. A field current is applied to the field winding provided in the rotor of the rotating machine unit, and a predetermined field magnetic pole is formed in the rotor. The armature winding supplied with AC power generates a rotating magnetic field and acts on the magnetic flux generated by the magnetic field magnetic pole of the rotor, thereby generating rotational torque in the rotor and rotating the rotor. The rotating electrical machine operating as an electric motor in this manner rotates the crankshaft of the internal combustion engine via the torque transmission member to start the internal combustion engine, and further performs torque assist of the internal combustion engine after the internal combustion engine is started.

  In the control device and the control method for a rotating electrical machine according to the present invention, when the rotating electrical machine is operated as a generator, the rotor of the rotating machine section is rotated by the internal combustion engine via the torque transmission member, and the field provided in the rotor. A magnetic field current is applied to the magnetic winding to form a predetermined field magnetic pole on the rotor. By rotating the rotor, the magnetic flux from the field magnetic pole is changed to the armature winding of the stator. Power is generated by interlinking and inducing an AC voltage in the armature winding. At this time, one of the following two power generation methods can be used according to the rotational speed of the rotor (equivalent to the rotational speed per unit time. In the following description, the rotational speed is used). .

  One of the power generation methods according to the rotational speed of the rotor is a power generation method in a state where the rotational speed of the rotor is lower than a predetermined value and the induced voltage of the armature winding is equal to or lower than the power supply voltage. This is a power generation method in which the power conversion element of the conversion unit is PWM-controlled to boost the induced voltage of the armature winding and output it. This power generation method is referred to as a so-called “inverter power generation mode”.

  Another power generation method according to the rotational speed of the rotor is a power generation method in a state where the rotational speed of the rotor is equal to or higher than a predetermined value and the induced voltage of the armature winding is equal to or higher than the power supply voltage. The power conversion element of the power conversion section is turned on / off at an electrical frequency synchronized with the rotation speed of the rotor (no PWM operation) to generate electricity, or the parasitic diode of the power conversion element is energized. This is a method of generating electricity. This power generation method is referred to as a so-called “synchronous power generation mode”.

  Hereinafter, a control device and a control method for a rotating electrical machine according to the present invention will be described with reference to the drawings according to each embodiment, taking a rotating electrical machine mounted on a vehicle as an example. In each embodiment, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted. The present invention is not limited to a rotating electrical machine mounted on a vehicle.

Embodiment 1 FIG.
1 is a block diagram showing an example of a power supply system of a vehicle equipped with a rotating electrical machine control apparatus according to Embodiment 1 of the present invention. In FIG. 1, a rotating electrical machine 1 includes a rotating machine part 2 including a rotor part (not shown) and a stator part (not shown), and an in-vehicle power supply device 102 such as a battery and the rotating machine part 2. In response to a command C from a power conversion unit 3 that performs power conversion and a host control device 103 that includes, for example, an ECU (Engine Control Unit) as an internal combustion engine control unit, the power conversion unit 3
It is comprised from the control part 4 which controls.

  A rotor shaft (not shown) that supports the rotor portion of the rotating machine portion 2 is mechanically connected to the crankshaft 6 of the internal combustion engine 5 by a belt 7 as a power transmission member. The power transmission member may be constituted by, for example, a chain other than the belt. The rotating electrical machine 1 is electrically connected to an in-vehicle load 101 and an in-vehicle power supply device 102.

  FIG. 2 is a block diagram showing a control apparatus for a rotating electrical machine according to Embodiment 1 of the present invention, and shows an example of the configuration of the rotating electrical machine 1 of FIG. In FIG. 2, the rotating machine portion 2 of the rotating electrical machine 1 includes a field winding 24 in a rotor portion 22, and a stator portion 21 that is an armature portion includes an armature winding 23. The rotor unit 22 further incorporates a rotation sensor 25 as a rotation detector that detects the rotation speed of the rotor unit 22 and the like.

  The power conversion unit 3 includes a field power conversion unit 32 that energizes the field winding 24 and an armature power conversion unit 31 that energizes the armature winding 23. The power converter 102 and the rotating machine Power conversion with the unit 2 is performed. FIG. 3 is a circuit diagram showing an armature power conversion unit in the rotating electrical machine control apparatus according to Embodiment 1 of the present invention. In FIG. 3, the armature power conversion unit 31 includes a U-phase upper arm power conversion element U1, a U-phase lower arm power conversion element U2, a V-phase upper arm power conversion element V1, and a V-phase lower arm power conversion. An inverter unit including a three-phase bridge circuit configured by the element V2, the W-phase upper arm power conversion element W1, and the W-phase lower arm power conversion element W2 is configured.

  In the following description, U-phase upper arm power conversion element U1, U-phase lower arm power conversion element U2, V-phase upper arm power conversion element V1, V-phase lower arm power conversion element V2, W The upper phase arm power conversion element W1 and the W phase lower arm power conversion element W2 may be simply referred to as power conversion elements U1, U2, V1, V2, W1, and W2, respectively.

  U-phase upper arm power conversion element U1, U-phase lower arm power conversion element U2, V-phase upper arm power conversion element V1, V-phase lower arm power conversion element V2, W-phase upper arm power conversion element W1 and W The phase lower arm power conversion element W2 includes, for example, MOSFETs and includes parasitic diodes U1d, U2d, V1d, V2d, W1d, and W2d connected in parallel.

  The series connection portion of the U-phase upper arm power conversion element U1 and the U-phase lower arm power conversion element U2 is connected to the U-phase terminal U of the armature winding 23, and the V-phase upper arm power conversion element V1 and the V-phase lower arm A series connection portion with the power conversion element V2 is connected to the V-phase terminal V of the armature winding 23, and a series connection portion between the W-phase upper arm power conversion element W1 and the W-phase lower arm power conversion element W2 is an armature winding. The wire 23 is connected to the W-phase terminal W. The positive side DC terminal N1 of the armature power conversion unit 31 is connected to the positive side terminal of the in-vehicle power supply device 102 and the positive side terminal of the in-vehicle load 101 (not shown), and the negative side DC terminal N2 is a ground potential part of the vehicle. (Not shown). Further, a smoothing capacitor 51 is connected between the positive electrode side DC terminal N1 and the negative electrode side DC terminal N2 of the armature power conversion unit 31.

  Next, in FIG. 2, the control unit 4 receives the command C from the host control device 103, the rotation speed of the rotor unit 22 obtained from the rotation sensor 25 of the rotor unit 22 of the rotating machine unit 2, for example, The terminal voltage of the rotating electrical machine 1 obtained from the voltage sensor VS provided at the terminal connected to the in-vehicle power supply device 102 (see FIG. 1) and the in-vehicle load 101 (see FIG. 1), and further the rotation of the rotating machine unit 2 The field current obtained from the field current sensor CS provided in the field winding 24 of the child portion 22 and the U-phase terminal U, V-phase terminal V, and W-phase terminal W of the armature winding 23 are provided. Each of the armature currents obtained from the armature current sensor PS is configured by a control circuit that controls the power conversion unit 3.

  More specifically, the control unit 4 includes a calculation unit 41, a field current duty signal generation circuit 42, and an armature energization signal generation circuit 43. The calculation unit 41 includes a command C from the host controller 103, a detection value of the rotation speed of the rotor unit 22 obtained from the rotation sensor 25, a detection value of the terminal voltage of the rotating electrical machine 1 obtained from the voltage sensor VS, The detection value of the field current obtained from the field current sensor CS, the detection value of the armature current obtained from the armature current sensor PS, and the like are input. The microprocessor mounted in the calculation unit 41 includes the input command C, the detected value of the rotational speed of the rotor unit 22, the detected value of the terminal voltage of the rotating electrical machine 1, the detected value of the field current, In order to drive the first drive command 411 for driving the armature energization signal generation circuit 43 and the field current duty signal generation circuit 42 based on the detected value of the armature current obtained from the child current sensor PS. The second drive command 412 is generated by calculation.

  The field current duty signal generation circuit 42 turns on a power conversion element (not shown) formed of, for example, a MOSFET that constitutes the field power conversion unit 32 based on the second drive command 412 from the calculation unit 41. The field current duty signal 421 to be controlled off / off is generated and applied to the power conversion element of the field power conversion unit 32. The armature energization signal generation circuit 43 generates an armature energization signal 431 for PWM-controlling each power conversion element constituting the armature power conversion unit 31 based on the first drive command 411 from the calculation unit 41, This is applied to each power conversion element of the armature power conversion unit 31.

  Next, the operation of the rotating electrical machine control apparatus according to Embodiment 1 of the present invention configured as described above will be described. First, the case where the rotary electric machine 1 is operated as an electric motor will be described.

<Operation as an electric motor>
1, 2, and 3, a calculation unit 41 in the control unit 4 receives a command C corresponding to the electric function from the host control device 103, and the microprocessor performs a calculation based on the command C. Is supplied to the armature energization signal generation circuit 43, and the second drive command 412 generated by the microprocessor based on the instruction C is supplied to the field current duty signal generation circuit 42. .

  The armature energization signal generation circuit 43, based on the first drive command 411 from the calculation unit 41, performs an armature energization signal 431 for on / off control of the power conversion elements constituting the armature power conversion unit 31 by PWM control. The generated armature energization signal 431 is converted into the U-phase upper arm power conversion element U1, the U-phase lower arm power conversion element U2, and the V-phase upper arm power conversion element V1 in the armature power conversion unit 31. It inputs into each gate terminal of V phase lower arm power conversion element V2, W phase upper arm power conversion element W1, and W phase lower arm power conversion element W2.

  Each power conversion element of the armature power conversion unit 31 is PWM-controlled based on the armature energization signal 431 from the armature energization signal generation circuit 43. As a result, the armature power conversion unit 31 operates as an inverter that converts DC power from the in-vehicle power supply device 102 into three-phase AC power, and the U-phase terminal U, the V-phase terminals V, and W of the armature winding 23. A three-phase alternating current is applied to the phase terminal W. At this time, the detected value of the armature current from the armature current sensor PS is set to the armature current target value included in the command C using the rotation speed of the rotor portion 22 and the rotor magnetic pole position information from the rotation sensor 25. Feedback control is performed so as to follow.

  The field current duty signal generation circuit 42 generates a field current duty signal 421 for controlling on / off of the power conversion element of the field power conversion unit 32 based on the second drive command 412 from the calculation unit 41. The generated field current duty signal 421 is input to the gate terminal of the power conversion element of the field power conversion unit 32. The power conversion element of the field power converter 32 is on / off controlled based on the field current duty signal 421 from the field current duty signal generation circuit 42. At this time, the field power conversion unit 32 is set so that the detected value of the field current from the field current sensor CS provided in the circuit of the field winding 24 follows the field current target value included in the command C. Field current feedback control is performed by adjusting the on / off duty of the power conversion element.

  By controlling the armature power conversion unit 31 and the field power conversion unit 32 as described above, the output torque value of the rotating electrical machine 1 becomes the torque command value commanded by the command C from the host controller 103. Thus, the armature current and the field current are controlled, and the rotor portion 22 is rotated by generating a rotational torque based on the rotating magnetic field formed in the stator portion 21, and is subjected to internal combustion via the belt 7 as a transmission member. The engine 5 is started or torque-assisted.

Next, the case where the rotary electric machine 1 is operated as a generator will be described.
<Operation as a generator>
1, 2, and 3, when the rotating electrical machine 1 functions as a generator, the rotor 22 of the rotating machine 2 is rotated by the power from the internal combustion engine 5. At this time, the calculation unit 41 in the control unit 4 receives a command C corresponding to the power generation function from the host controller 103, and generates a second drive command 412 generated by calculation by the microprocessor based on the command C. This is applied to the field current duty signal generation circuit 42.

  The field current duty signal generation circuit 42 generates a field current duty signal 421 for controlling on / off of the power conversion element of the field power conversion unit 32 based on the second drive command 412 from the calculation unit 41. The generated field current duty signal 421 is input to the gate terminal of the power conversion element of the field power conversion unit 32. The power conversion element of the field power converter 32 is on / off controlled based on the field current duty signal 421 from the field current duty signal generation circuit 42. At this time, the field power conversion unit 32 is set so that the detected value of the field current from the field current sensor CS provided in the circuit of the field winding 24 follows the field current target value included in the command C. Field current feedback control is performed by adjusting the on / off duty of the power conversion element.

  When the field current is supplied to the field winding 24, the magnetic flux from the field winding 24 is linked to the armature winding 23, and a voltage is induced in the armature winding 23. At this time, the power conversion element of the armature power conversion unit 31 is on / off controlled according to the induced voltage. By connecting the in-vehicle power supply device 102 and the in-vehicle load 101 between the DC terminals of the armature power conversion unit 31, the output voltage of the armature power conversion unit 31 is clipped, and the generated current generated by the rotating electrical machine 1 is generated. It flows into the in-vehicle power supply device 102 and charges it. Further, the generated current generated by the rotating electrical machine 1 flows to the in-vehicle load 101 to drive it.

  Here, when a field current is passed through the field winding 24 and the induced voltage generated in the armature winding 23 is higher than the voltage of the in-vehicle power supply device 102, power generation in the synchronous power generation mode is possible. In the synchronous power generation mode, the power conversion elements (for example, MOSFETs) U1, U2, V1, V2, W1, and W2 of the armature power conversion unit 31 are turned on / off at an electrical frequency that is synchronized with the rotation speed of the rotor unit 22. Power generation can be performed, or power generation can be performed by energizing the parasitic diodes U1d, U2d, V1d, V2d, W1d, and W2d of the power conversion element of the armature power conversion unit 31.

  On the other hand, when the induced voltage generated in the armature winding 23 is lower than the voltage of the in-vehicle power supply device 102, it is necessary to boost the induced voltage generated in the armature winding 23 by the armature power conversion unit 31. In this case, the power conversion elements (for example, MOSFETs) U 1, U 2, V 1, V 2, W 1, W 2 of the armature power conversion unit 31 are PWM-operated by the armature energization signal 431 from the armature energization signal generation circuit 43. Inverter power generation can be performed by boosting the induced voltage generated in the armature winding 23.

  Here, when performing inverter power generation by PWM control of the power conversion elements U1, U2, V1, V2, W1, and W2 of the armature power conversion unit 31, the power conversion elements U1 at high frequency (kHz order) by the PWM control frequency, By switching on / off operation of U2, V1, V2, W1, and W2, the switching loss in the power conversion element increases, and the loss in the power conversion element increases compared with the above-described synchronous power generation, and the power generation efficiency is increased. descend. For this reason, when operating the rotary electric machine 1 as a generator, when synchronous electric power generation is possible, control is performed so as to perform synchronous electric power generation.

  The selection of the synchronous power generation mode and the inverter power generation mode is performed based on the relationship between the induced voltage generated in the armature winding 23 and the voltage of the in-vehicle power supply device 102. The induced voltage in the armature winding 23 is the voltage of the in-vehicle power supply device 102. When it is lower, the inverter power generation mode is selected. Conversely, when the induced voltage of the armature winding 23 is higher than the voltage of the in-vehicle power supply device 102, the synchronous power generation mode is selected.

  Since the induced voltage of the armature winding 23 depends on the field current and the rotation speed of the rotor unit 22, the relationship between the field current, the rotation speed, and the induced voltage is set in advance as an induced voltage map M0, and the memory of the control unit 4 is used. By storing in M, the induced voltage is read from the induced voltage map M0 based on the field current and the rotation speed, and the read induced voltage is compared with the voltage of the in-vehicle power supply device 102, thereby generating the power generation mode described above. The power generation mode selection process can be speeded up. The voltage value in the induced voltage map M0 may be a voltage value at the rotating electrical machine terminal instead of the induced voltage value.

  In addition, during the power generation operation of the rotating electrical machine 1, the ambient temperature at the position where the rotating electrical machine 1 in which the rotating machine unit 2, the power conversion unit 3, and the control unit 4 are integrally configured is mounted on the vehicle is the state of the vehicle If the power generation is performed in this state, the temperature of the rotating electrical machine 1 rises due to the heat generated in the power conversion unit 3, but in this case, the power generation mode has a high power generation efficiency at a high temperature. It is desirable to select. Specifically, instead of selecting the power generation mode based on the induced voltage map M0, the power generation efficiency and the power generation mode are determined based on the rotation speed of the rotor portion 22, the induced voltage of the armature winding 23, and the power generation command value based on the command C. The power generation control map M1 to be stored is stored in the memory M of the control unit 4, and a more efficient power generation mode can be selected using the power generation control map M1.

  Moreover, although the temperature of the power conversion unit 3 may rise due to power generation, the temperature of the power conversion unit 3 is monitored by the power conversion unit temperature detector 52 installed in the power conversion unit 3. When the detected temperature from the converter temperature detector 52 exceeds the allowable temperature for the power conversion element, the protection function is activated and the output of the power converter 3 is stopped.

  The control unit 4 stores the power generation control map M2 for each detected temperature of the power conversion unit temperature detector 52 in a memory or the like, and if the temperature detected by the power conversion unit temperature detector 52 exceeds a certain threshold value, The power generation output based on the detected temperature-specific power generation control map M2 is prioritized over the power generation command value by C to control the armature current by power generation. In the power generation control map M2 for each detected temperature, a power generation command (for example, torque or output current value) that can generate power for each detected temperature is stored. Since the power generation command in the power generation control map M2 for each detected temperature is set as a power generation command that can suppress the temperature rise of the power conversion element, the temperature rise of the power conversion element can be suppressed and power generation can be continued. Become.

  In the power generation control map M2 for each detected temperature, for example, a power generation command value and a power generation mode that enable continuous power generation at the detected temperature are stored. The power conversion unit temperature detector 52 that detects the temperature of the power conversion element is incorporated in each of the power conversion elements U1, U2, V1, V2, W1, and W2. The maximum temperature of the temperature detection value by the power converter temperature detector 52 incorporated in the conversion elements U1, U2, V1, V2, W1, and W2 is used.

  Further, the power generation control map M1 and the power generation control map M2 for each detected temperature include maps corresponding to a plurality of voltages at the terminal voltage of the rotating electrical machine 1. The calculation unit 41 of the control unit 4 interpolates the stored power generation control map according to the voltage detection value from the voltage sensor VS and the rotation speed detection value from the rotation sensor 25 during the power generation operation, and generates power generation amount. The power generation mode can be selected. As a result, the power generation operation can be continued without stopping the power generation operation by the temperature protection function.

  In addition, when the power generation mode is switched, the rotor unit performs switching between the synchronous power generation mode and the inverter power generation mode so that hunting does not frequently occur in the synchronous power generation mode and the inverter power generation mode due to the transition of the power generation mode. A hysteresis is set for the number of rotations 22.

Embodiment 2. FIG.
The rotating electrical machine control device and control method according to the second embodiment of the present invention is obtained by adding the following functions to the rotating electrical machine control device and control method according to the first embodiment. That is, the control unit temperature detection unit 53 is installed in the control unit 4 so that the temperature of the control unit 4 can be detected. The control part temperature detection part 53 can be comprised by the thermistor etc. which can detect the temperature of the control board in the control part 4, for example. Other configurations are the same as those in the first embodiment.

  The control apparatus and control method for a rotating electrical machine according to Embodiment 2 of the present invention determines from both the temperature detection value from the power converter temperature detector 52 and the temperature detection value from the controller temperature detector 53, Another power generation control map M3 for each detected temperature is used. Some electronic components that constitute the control unit 4 have an allowable temperature lower than the allowable temperature of the power conversion element, and therefore control is performed in consideration of not only the temperature of the power conversion unit 3 but also the temperature of the control unit 4. . The power generation control map M3 for each detected temperature stores a power generation command value and a power generation mode that enable continuous power generation at the detected temperature as in the power generation control map M2 for each detected temperature. Data that takes into account is stored.

  Further, the power generation control map M1 and the detected temperature-specific power generation control map M2 include maps corresponding to a plurality of voltages of the rotating electrical machine terminals. In the control unit 4, the internal map is interpolated according to the voltage detection value of the voltage sensor VS during the power generation operation and the rotation speed detection value of the rotation sensor 25, and the power generation amount and the power generation mode are selected. .

  As described above, in the control device and the control method for the rotating electrical machine according to Embodiment 1 and Embodiment 2 of the present invention, the rotating machine unit 2 and the power conversion unit 3 are described as being integrated. Even if the power conversion unit 3 is configured separately and these are connected to each other by a power line or signal line cable, the same operation and effect can be obtained.

  In each of the above-described embodiments, the case where the armature winding 23 that is the stator winding of the stator portion 21 is a three-phase winding has been described. The present invention can be applied even in the case of multi-phase windings or in the case of multi-phase multi-group windings, and the same effects as those of the above-described embodiment can be obtained. it can.

The above-described control apparatus and control method for a rotating electrical machine according to the first and second embodiments of the present invention embody at least one of the following inventions.
(1) An electric function including a stator portion having an armature winding and a rotor portion having a field winding and operating as an electric motor, and a generator when the rotor portion is rotated by an external force A rotating machine unit having a power generation function to operate;
A power conversion unit including an armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and a field power conversion unit that controls a field current flowing in the field winding;
A rotation sensor for detecting the rotation speed of the rotor part;
A power converter temperature detector for detecting the temperature of the power converter;
A control unit for controlling the power conversion unit;
A power generation control map stored in the control unit and storing a plurality of power generation modes for operating the rotating machine unit as the generator;
With
The power generation control map includes a power generation control map for each detected temperature storing a power generation output corresponding to the temperature of the power conversion unit,
The control unit, based on the power generation mode read from the power generation control map corresponding to the number of rotations of the rotor portion detected by the rotation sensor and the induced voltage induced in the armature winding, Based on the power generation output that is configured to control the power conversion unit and read from the power generation control map for each detected temperature corresponding to the temperature of the power conversion unit detected by the power conversion unit temperature detector, Configured to control the power converter ,
A control device for a rotating electrical machine.
According to the present invention, the power generation operation can be selected from the power generation control map based on the information from the power converter temperature detector , and the power generation operation can be performed efficiently by selecting the synchronous power generation mode and the inverter power generation mode. Also, the power generation control map corresponds to the temperature and power generation required output, and the temperature and required
An efficient power generation mode can be selected for the output demand. As a result, the temperature of the rotating electrical machine
Suppressing the rise, avoiding output stop due to temperature protection of rotating electrical machines, and continuing output
Can do. In addition, by continuing the power generation output, the load on the in-vehicle power supply can be reduced and the longevity
Can also be mortalized.

(2) The power generation control map stores a continuous power generation output possible range corresponding to the temperature of the power conversion unit,
The control apparatus for a rotating electrical machine according to (1) above, wherein
According to the present invention, the temperature rise of the rotating electrical machine is suppressed, the output can be kept from being stopped by the temperature protection of the rotating electrical machine, the output can be continued, the load on the in-vehicle power supply device can be reduced, and the life can be extended. It becomes.

(3) When the temperature detected by the power conversion unit temperature detector exceeds a predetermined threshold, the control unit is configured to output the power conversion unit within the continuous power generation output possible range stored in the power generation control map. Configured to control,
The control apparatus for a rotating electrical machine according to (2) above, wherein
According to this invention, the temperature rise of the rotating electrical machine can be suppressed, and output can be stopped while avoiding the output stop due to the temperature protection of the rotating electrical machine. In addition, by continuing the power generation output,
The load on the in-vehicle power supply device can be reduced and the life can be extended.

(4) An electric function including a stator portion having an armature winding and a rotor portion having a field winding, and operating as an electric motor, and as a generator when the rotor portion is rotated by an external force A rotating machine unit having a power generation function to operate;
An armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and flows in the field winding
A power converter having a field power converter for controlling the field current
A method of controlling a rotating electrical machine comprising:
A power generation mode corresponding to the number of rotations of the rotor part and the induced voltage induced in the armature winding
Is read from a power generation control map storing a plurality of power generation modes to control the power conversion unit, and the power generation control map stores a power generation output corresponding to the temperature of the power conversion unit. And reading the power generation output corresponding to the detected temperature of the power conversion unit from the power generation control map for each detected temperature to control the power conversion unit,
A control method for a rotating electrical machine .
According to the present invention, the power generation operation can be selected from the power generation control map based on the information from the power converter temperature detector , and the power generation operation can be performed efficiently by selecting the synchronous power generation mode and the inverter power generation mode. In addition, by selecting the power generation operation from the power generation control map based on the information of the temperature detection unit of the power conversion unit and the information of the temperature detection unit of the control unit, the synchronous power generation mode and the inverter power generation mode are selected.
A more efficient power generation operation can be performed. Control unit with many electronic components is power conversion unit
Some parts have a lower allowable temperature than the temperature of the controller and the power converter.
The power generation operation can be performed without interruption.

(5) The power generation control map stores a continuous power generation output possible range corresponding to the temperature of the power conversion unit,
When the temperature of the power converter exceeds a predetermined threshold, the power converter is controlled based on the continuous power generation output possible range stored in the power generation control map.
The method of controlling a rotating electrical machine according to (4) above, wherein
According to this invention, the temperature rise of the rotating electrical machine can be suppressed, and output can be stopped while avoiding the output stop due to the temperature protection of the rotating electrical machine. In addition, by continuing the power generation output,
The load on the in-vehicle power supply device can be reduced and the life can be extended.

  The present invention is not limited to the rotating electrical machine control device and control method according to the above-described first and second embodiments, and the configurations of the first and second embodiments are appropriately selected without departing from the spirit of the present invention. It is possible to combine, partially modify the structure, or to partially omit the structure.

DESCRIPTION OF SYMBOLS 1 Rotating electrical machine, 2 Rotating machine part, 3 Power conversion part, 4 Control part, 5 Internal combustion engine, 6 Crankshaft, 7 Belt, 101 Car load, 102 Car power supply, 103 Host controller, 21 Stator part, 22 Rotation Child part, 23 Armature winding, 24 Field winding, 25 Rotation sensor, 31 Armature power conversion part, 32 Field power conversion part, U1 U-phase upper arm power conversion element, U2 U-phase lower arm power conversion element , V1 V-phase upper arm power conversion element, V2 V-phase lower arm power conversion element, W1 W-phase upper arm power conversion element, W2 W-phase lower arm power conversion element, U1d, U2d, V1d, V2d, W1d, W2d Parasitic diode , 51 smoothing capacitor, 41 calculation unit, 42 field current duty signal generation circuit, 43 armature energization signal generation circuit, 52 power conversion unit temperature detection unit 5 Control unit temperature detecting unit, C command, CS field current sensor, M memory, VS voltage sensor, PS armature current sensor

Claims (5)

An electric function including a stator portion having an armature winding and a rotor portion having a field winding, and operating as a motor, and generating as a generator when the rotor portion is rotated by an external force A rotating machine unit with functions,
A power conversion unit including an armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and a field power conversion unit that controls a field current flowing in the field winding;
A rotation sensor for detecting the rotation speed of the rotor part;
A power converter temperature detector for detecting the temperature of the power converter;
A control unit for controlling the power conversion unit;
A power generation control map stored in the control unit and storing a plurality of power generation modes for operating the rotating machine unit as the generator;
With
The power generation control map includes a power generation control map for each detected temperature storing a power generation output corresponding to the temperature of the power conversion unit,
The control unit, based on the power generation mode read from the power generation control map corresponding to the number of rotations of the rotor portion detected by the rotation sensor and the induced voltage induced in the armature winding, Based on the power generation output that is configured to control the power conversion unit and read from the power generation control map for each detected temperature corresponding to the temperature of the power conversion unit detected by the power conversion unit temperature detector, Configured to control the power converter ,
A control device for a rotating electrical machine. The power generation control map stores a continuous power generation output possible range corresponding to the temperature of the power conversion unit.
Being
The control device for a rotating electrical machine according to claim 1. When the temperature detected by the power converter temperature detector exceeds a predetermined threshold, the control unit
And the power conversion unit in the continuous power generation output possible range stored in the power generation control map.
Configured to control,
The rotating electrical machine control device according to claim 2 . It includes a stator part having armature windings and a rotor part having field windings, and operates as an electric motor.
The electric function that works and the generator that operates as a generator when the rotor is rotated by external force
A rotating machine part equipped with an electric function;
An armature power conversion unit that performs power conversion between the rotating machine unit and a power source, and flows in the field winding
A power converter having a field power converter for controlling the field current
A method of controlling a rotating electrical machine comprising:
A power generation mode corresponding to the number of rotations of the rotor part and the induced voltage induced in the armature winding
Is read from a power generation control map storing a plurality of power generation modes to control the power conversion unit, and the power generation control map stores a power generation output corresponding to the temperature of the power conversion unit. And reading the power generation output corresponding to the detected temperature of the power conversion unit from the power generation control map for each detected temperature to control the power conversion unit,
A control method for a rotating electrical machine . The power generation control map stores a continuous power generation output possible range corresponding to the temperature of the power conversion unit.
Has been
When the temperature of the power conversion unit exceeds a predetermined threshold, it is stored in the power generation control map
Controlling the power converter based on the continuous power generation output possible range;
The method of controlling a rotating electrical machine according to claim 4 .

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