TWI757866B - Power control system and regulator voltage control device - Google Patents

Abstract

A power control system and a regulator voltage control device are provided in the present disclosure. The power control system includes an engine device, a generator device, a regulator voltage control device, and a battery device. The regulator voltage control device is connected to the generator device, and regulates an output voltage value according to a frequency change rate of a voltage of the generator device.

Description

Power control system and voltage regulator control device

The invention relates to a power control system and a voltage stabilization control device, in particular to a power control system and a voltage stabilization control device for improving power use efficiency.

The output power of the traditional fuel engine device is mainly converted into several aspects, driving the mechanism for the vehicle or other, driving the generator device and the heat energy lost in the conversion process. Therefore, the engine unit needs a trip computer to control the speed to meet the needs of the vehicle operation. However, when the vehicle starts to increase the rotation speed from a low rotation speed, the engine device still needs to provide the power of the generator device and the vehicle driving mechanism at the same time. However, the output power of the engine at low revs is relatively low. As a result, the efficiency of power usage is reduced.

Therefore, how to provide a power control system and a voltage stabilizer control device that can improve the power utilization efficiency when the rotation speed starts to increase at a low rotation speed has become one of the important issues to be solved in this field.

The technical problem to be solved by the present invention is to provide a power control system for a mobile vehicle in view of the deficiencies of the prior art, including: an engine device; a generator device connected to the engine device; a voltage stabilization control device connected to the engine device Electric machine device, according to the generator device An output voltage value is regulated by a frequency change rate of The change detection circuit is electrically connected to the switch circuit for detecting a frequency of a voltage of the generator device, and the frequency change detection circuit provides a first frequency change rate according to the frequency change rate of the frequency. A frequency change control signal or a second frequency change control signal is sent to the output control circuit, and the output control circuit controls the switch according to the first frequency change control signal or the second frequency change control signal The circuit outputs the output voltage value; and a battery device is connected to the voltage stabilization control device and receives the output voltage value of the voltage stabilization control device.

One of the beneficial effects of the present invention is that, with the power control system and the voltage stabilization control device provided by the present invention, the engine device of the mobile vehicle can mainly provide the output power when the mobile vehicle starts to increase the rotational speed at a low speed. Drive the traffic load to the vehicle to move the vehicle, and the acceleration efficiency is improved. It can also improve fuel efficiency and achieve a powerful effect of fuel saving.

For a further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

SYS1: Dynamic Control System

1: Voltage regulator control device

2: Generator device

3: Engine unit

4: Drive the traffic load

11: Switch circuit

12: Frequency change detection circuit

13: Output control circuit

BAT: battery unit

LOAD: load

Vbat: first voltage

Vdet1: The first frequency change control signal

Vdet2: The second frequency change control signal

Vg1: The first phase voltage

Vg2: The second phase voltage

Vg3: The third phase voltage

FIG. 1 is a schematic diagram of a mobile vehicle power control system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the voltage regulator control device of the present invention.

3 is a schematic diagram of torque and output power of an engine device of a power control system for a mobile vehicle according to an embodiment of the present invention.

The following are specific specific examples to illustrate the embodiments of the "mobile vehicle power control system and voltage stabilization control device" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. . The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

[First Embodiment]

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic diagram of a power control system for a mobile vehicle according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the voltage regulator control device of the present invention.

The mobile vehicle power control system SYS1 is arranged on a mobile vehicle. The mobile vehicle is a gas engine locomotive or a gas engine car.

The mobile vehicle power control system SYS1 includes a voltage regulator control device 1 , a generator device 2 , an engine device 3 , a driving load 4 , and a battery device BAT.

The generator device 2 is connected to the engine device 3 . The voltage stabilization control device 1 is connected to the generator device 2 . The voltage stabilization control device 1 can regulate a first voltage Vbat according to a frequency change rate of a generator voltage of the generator device 2 .

In this embodiment, the voltage regulation control device 1 is electrically connected to a battery device BAT and a load LOAD. The battery device BAT is used to store the electrical energy provided by the generator device 2 . On the other hand, the load LOAD is connected to the battery device BAT, and operates by receiving the electric energy of the battery device BAT.

That is, the voltage stabilization control device 1 can provide different frequency change control signals to the output control device according to the generator voltage provided by the generator device 2 to control the output voltage.

The voltage regulation control device 1 includes a switch circuit 11 , an output control circuit 13 and a frequency change detection circuit 12 . The switch circuit 11 is electrically connected to the output control circuit 13 . The frequency change detection circuit 12 is electrically connected to the switch circuit 11 . The switch circuit 11 is electrically connected to the generator device 2 .

In this embodiment, the generator device 2 is a three-phase alternator or a two-phase alternator, which can provide a first phase voltage Vg1, a second phase voltage Vg2 and a third phase voltage Vg3. The switch circuit 11 is a bridge circuit, and includes six switch units in this embodiment, which are respectively connected to the first phase voltage Vg1 , the second phase voltage Vg2 and the third phase voltage Vg3 . The output control circuit 13 is electrically connected to the six switch units of the switch circuit 11 respectively, and controls the opening and closing of the six switch units.

The frequency change detection circuit 12 is electrically connected to a circuit arrangement of one of the first phase voltage Vg1 , the second phase voltage Vg2 and the third phase voltage Vg3 . In this embodiment, the frequency change detection circuit 12 is electrically connected to the circuit arrangement of the third phase voltage Vg3 for detecting a frequency value of the third phase voltage Vg3.

The frequency change detection circuit 12 not only detects the frequency value of the third phase voltage Vg3 in real time, but also calculates the frequency change rate of the third phase voltage Vg3 in a predetermined time interval. That is, when the frequency of the third phase voltage Vg3 changes, the frequency change detection circuit 12 calculates the frequency change rate of the third phase voltage Vg3.

When the frequency change rate of the third phase voltage Vg3 in the predetermined time interval is greater than or equal to a predetermined frequency change value, the frequency change detection circuit 12 provides a first frequency change control signal Vdet1 to the output control circuit 13 . The output control circuit 13 controls the opening and closing of the switch unit (not shown) of the switch circuit 11 according to the first frequency change signal Vdet1, so that the switch circuit 11 does not output a first voltage Vbat, that is, does not provide a voltage output.

When the frequency change rate of the third phase voltage Vg3 in the predetermined time interval is less than a predetermined frequency change value, the frequency change detection circuit 12 will provide a second frequency change control signal The number Vdet2 is given to the output control circuit 13. The output control circuit 13 controls the opening and closing of the switch unit (not shown) of the switch circuit 11 according to the second frequency change signal Vdet2, so that the switch circuit 11 outputs a first voltage Vbat. In this embodiment, the first voltage Vbat is provided to the battery device BAT for charging. That is, when the frequency change rate of the third phase voltage Vg3 in the predetermined time interval is greater than the predetermined frequency change value, the output control circuit 13 will turn off the switch circuit 11 and not output any voltage. The first voltage Vbat can be set to be between 14V and 14.5V, which is not limited in the present invention. In this embodiment, the switch unit (not shown) of the switch circuit 11 is a Silicon Controlled Rectifier (SCR). In addition, the switch circuit 11 is an AC to DC conversion circuit.

At this time, the switch circuit 11 is closed, the first voltage Vbat will not be output, and the battery will not be charged. The generator device 2 also does not output current and does not load the engine device 3 . The engine device 3 can only output power to drive the vehicle load 4 to drive the vehicle.

Further, when the mobile vehicle starts to increase the rotation speed from a low rotation speed (idle state) and starts, the frequency of the third phase voltage Vg3 of the generator device 2 will increase, and the third phase voltage Vg3 is within a predetermined time interval (for example, 2 second), the frequency change rate will be greater than or equal to the predetermined frequency change value, and the frequency change detection circuit 12 will send the first frequency change control signal Vdet1 to the output control circuit 13 to turn off the switch unit of the switch circuit 11, so the first frequency change control signal Vdet1 is not output. A voltage Vbat. When no current is output, the generator device 2 will not charge the battery device BAT, so the generator device 2 will not output power substantially, and will not consume the power of the engine device 3 . Therefore, the output power of the engine device 3 can be mainly provided to drive the vehicle load 4 for rapidly increasing the moving speed of the moving vehicle.

Then, when the mobile vehicle increases to a certain speed (for example, 2000rpm), the frequency of the third phase voltage Vg3 of the generator device 2 will also tend to be stable, that is, the frequency change of the third phase voltage Vg3 will also tend to be stable. The frequency change rate detected by the frequency change detection circuit 12 will be lower than the frequency change preset. At this time, the frequency change detection circuit 12 will send the second frequency change control signal Vdet2 to the output control circuit 13 . The output control circuit 13 will control according to the second frequency change The signal Vdet2 turns on the switch unit of the switch circuit 11 to output the first voltage Vbat, which is provided to the battery device BAT and the load LOAD.

In other embodiments, the frequency change detection circuit 12 can output a plurality of frequency change control signals, so that the output control circuit 13 controls the switch circuit 11 to output three or more first voltages Vbat with different voltage levels.

In this embodiment, the predetermined time interval can be set to 1 second or 3 seconds, and the predetermined time interval can be adjusted according to actual needs, which is not limited in the present invention.

Please refer to FIG. 3 . FIG. 3 is a schematic diagram of torque and output power of an engine device of a power control system for a mobile vehicle according to an embodiment of the present invention.

When the rotational speed of the engine device in Figure 3 is at a low rotational speed (1000 rpm), its output power and torque (Torque) are lower than other rotational speeds. At this time, the power control system SYS1 of the embodiment of the present invention reduces the output power of the generator device 2 so that the output power of the engine device 3 can be effectively output to the driving load 4 to rapidly increase the speed of the moving vehicle. In addition, the time for the engine device 3 to increase the speed to become stable is not long, the generator device 2 does not output power for a short time, and the battery device BAT can also output a large current correspondingly. In this way, the engine device 3 can effectively improve the performance and also can effectively improve the fuel efficiency.

[Advantageous effects of the embodiment]

One of the beneficial effects of the present invention is that, with the power control system and the voltage stabilization control device provided by the present invention, the engine device of the mobile vehicle can mainly provide the output power when the mobile vehicle starts to increase the rotational speed at a low speed. Drive the load to the vehicle to move the vehicle, and the acceleration efficiency is improved. It can also improve fuel efficiency and achieve a powerful effect of fuel saving.

The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

SYS1: Dynamic Control System

1: Voltage regulator control device

2: Generator device

3: Engine unit

4: Drive the load

11: Switch circuit

12: Frequency change detection circuit

13: Output control circuit

BAT: battery unit

LOAD: load

Vg1: The first phase voltage

Vg2: The second phase voltage

Vg3: The third phase voltage

Claims (7)

A power control system suitable for mobile vehicles, including: an engine unit; a generator unit connected to the engine unit; a voltage-stabilizing control device, connected to the generator device, and regulating an output voltage value according to a frequency change rate of a voltage of the generator device, the voltage-stabilizing control device includes a switch circuit, an output control circuit, and a a frequency change detection circuit, the switch circuit is electrically connected to the generator device, and the frequency change detection circuit is electrically connected to the switch circuit for detecting a frequency value of a voltage of the generator device , the frequency change detection circuit provides a first frequency change control signal or a second frequency change control signal to the output control circuit according to the frequency change rate of the frequency value, and the output control circuit according to the first frequency change control signal or the second frequency change control signal to control the switch circuit to output the output voltage value; and A battery device is connected to the voltage stabilization control device, and receives the output voltage value of the voltage stabilization control device. The power control system according to claim 1, wherein the output voltage value of the voltage stabilization control device at least includes no voltage output and a first voltage. The power control system according to claim 2, wherein when the frequency change rate detected by the frequency change detection circuit is greater than or equal to a predetermined frequency change value, the frequency change detection circuit provides a first A control signal is given to the output control circuit to regulate the output voltage value to provide no voltage output. The power control system according to claim 3, wherein when the frequency change rate detected by the frequency change detection circuit is less than the predetermined frequency change value, the frequency change detection circuit provides a first Two control signals are sent to the output control circuit to regulate the output voltage to be the first voltage. A voltage stabilization control device, connected to a generator device, the voltage stabilization control device includes: a switch circuit receiving at least one output voltage of the generator device; an output control circuit electrically connected to the switch circuit; and a frequency change detection circuit electrically connected to the output control circuit; For detecting a frequency value of a voltage provided by the generator device, the frequency change detection circuit provides a control signal to the output control circuit according to a frequency change rate of the frequency value, and the output The control circuit controls the switch circuit to output an output voltage value. The voltage regulation control device according to claim 5, wherein when the frequency change rate detected by the frequency change detection circuit is greater than or equal to a predetermined frequency change value, the frequency change detection circuit provides a A first control signal is given to the output control circuit to regulate the output voltage to not provide a voltage output. The voltage regulation control device according to claim 6, wherein when the frequency change rate detected by the frequency change detection circuit is less than the predetermined frequency change value, the frequency change detection circuit provides a A second control signal is given to the output control circuit to regulate the output voltage to be a first voltage.

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