CN204761281U - A charging device for condenser - Google Patents
A charging device for condenser Download PDFInfo
- Publication number
- CN204761281U CN204761281U CN201520110736.4U CN201520110736U CN204761281U CN 204761281 U CN204761281 U CN 204761281U CN 201520110736 U CN201520110736 U CN 201520110736U CN 204761281 U CN204761281 U CN 204761281U
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- CN
- China
- Prior art keywords
- charging
- intermediate circuit
- voltage
- circuit
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/062—Avoiding or suppressing excessive transient voltages or currents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a device that can be connected with the power supply voltage source, it includes: contain diode bridge intermediate circuit (120), the electric current that diode bridge set to enter into the intermediate circuit from the power supply voltage source carries out the rectification, be in switch (104) between power supply voltage source and intermediate circuit (120), charging circuit, it is set to guide charging voltage to intermediate circuit (120) with following power supply voltage source electrical property to to at least two capacitor charges, charging voltage sets to and locates to switch on at switch (104) at least in part, the intermediate circuit is at least including two condenser (240) to charging circuit sets the charging voltage between the switch -on two at least condenser (240) to.
Description
Technical field
The utility model relates to a kind of charging device for capacitor.
Background technology
In electronic technology field, use inverter by converting direct-current voltage into alternating-current voltage.Such as, portable, by battery-driven current consuming apparatus, in the product of solar energy and in the electronic system usually wherein needing to produce alternating voltage from direct voltage, use inverter.Some inverters can also convert alternating voltage to direct voltage, and this is called rectification.Three-phase inverter can use in alternating current machine.
Except battery or as the additional supply of battery, the DC power supply that inverter uses such as can comprise the solar collector producing direct current.In larger system, DC power supply can be the current distribution network of three-phase.
Inverter may be used for the frequency changing alternating current in the following manner, namely first carries out rectification to alternating voltage, is then fed to the inverter it being converted to the alternating voltage with different frequency from rectifier.According to aforesaid way, can use and such as carry out rectification based on the rectifier (diode rectifier) of diode.Diode in diode rectifier can comprise such as silicon diode or Schottky diode.
Such as, the inverter supplied by diode rectifier can have large direct current capacitor, wherein it is beneficial that direct current capacitor is charged to the value equaling principal voltage, more precisely before connection main switch or main contactor, like this, making operation can not cause large switching current spike.Large switching current spike may cause the insurance of system to disconnect, or interference supply network.
Can be undertaken by (such as two-phase or three-phase) charging resistor the charging of direct current capacitor.In order to obtain good final result, determine the size of resistance according to respective situation, and wherein can be lossy.Saturable transformer can be used charge alternatively.Due to large charging current, the size of saturable transformer must be determined carefully.
Utility model content
The utility model provides a kind of technical scheme, can realize thus charging to direct current capacitor with less loss, wherein, is unlike in when use passive resistance charges so important to working stage to the selection of the parameter of charging circuit.By means of technical scheme of the present invention, voltage that the half of the voltage of the technical scheme than the saturable transformer based on prior art is also little can be used as charging voltage.
The utility model proposes a kind of device that can be connected with supply voltage source, it comprises:
Comprise the intermediate circuit of diode bridge, the electric current that described diode bridge is arranged to entering into described intermediate circuit from described supply voltage source carries out rectification;
Be in the switch between described supply voltage source and described intermediate circuit;
Charging circuit, it is arranged to charging voltage to guide to described intermediate circuit electrically from described supply voltage source, so that at least two capacitor chargings, described charging voltage is arranged at least in part in described switch place conducting;
It is characterized in that, described intermediate circuit at least comprises two capacitors, and the charging voltage described in connection between at least two capacitors is arranged to by described charging circuit.
According to embodiment of the present utility model, described charging circuit comprises single-phase saturable transformer.
According to embodiment of the present utility model, the secondary voltage of described single-phase saturable transformer is approximately the half of primary voltage.
According to embodiment of the present utility model, form multiplier by the secondary section of described diode bridge, described single-phase saturable transformer and described at least two capacitors, described multiplier is by double for the charging voltage in described intermediate circuit.
According to embodiment of the present utility model, described charging circuit comprises saturable transformer that can be electrically isolated.
According to embodiment of the present utility model, the described secondary voltage of saturable transformer that can be electrically isolated is approximately the half of primary voltage.
According to embodiment of the present utility model, by described diode bridge, described can be electrically isolated the secondary section of saturable transformer and described at least two capacitors form multiplier, described multiplier is by double for the charging voltage in described intermediate circuit.
According to embodiment of the present utility model, two capacitors be included in described intermediate circuit are connected in series.
Accompanying drawing explanation
Figure 1A and 1B shows two examples of charging circuit;
Fig. 2 A and 2B shows two examples of charging circuit of the present utility model.
Embodiment
Show charging circuit in figure ia, it has the resistance 110 be located in two phase lines.In example shown in the figure, the quantity of resistance 110 is two, and such switch 106 can turn off or connect charging circuit.Except resistance, the charging circuit shown in figure can also comprise four fuse wires 112.Alternatively, resistance 110 also can be located in triple line.Direct current, for connecting the direct current in inductor 108, can be fed in intermediate circuit 120 by inductor 108 by master switch 104.In intermediate circuit 120, direct current is connected in the diode bridge in parallel with capacitor 120 in the mode shown in scheming.The direct current in the inverter do not illustrated in such as Figure 1A can be connected by intermediate circuit 120.
In the charging circuit shown in Figure 1A, need the size determining resistance according to respective situation, this can improve the job costs of planning circuit.When determining size, must consider that the position needing to charge many times can use resistance repeatedly, and resistance may overload work in use repeatedly.In addition, the charging resistor 110 in the charging circuit of Figure 1A can produce loss, this is not desirable state.
When using the charging circuit of Figure 1A, the capacitor 122 of intermediate circuit can be charged to the size of total voltage by making switch 106 be in the mode of the state of conducting.Then switch 106 is opened, and switch 104 is in the state of conducting.
Show the charging circuit that wherein saturable transformer 160 is connected with single-phase diode rectifier 170 in fig. ib.Single-phase diode rectifier 170 is directly connected with intermediate circuit 120 in the mode shown in scheming.Element 104,108,120 in Figure 1B is substantially identical with the corresponding element in Figure 1A with 122.
Switch 150 can make saturable transformer 160 and single-phase diode rectifier 170 separate with total voltage.The charging circuit of Figure 1B can also comprise fuse wire 140.
First charging transformer 160 in the charging circuit of Figure 1B reaches capacity, and thus limit the size of charging current.When direct voltage rises, voltage difference diminishes and therefore charging current is restricted, until when the capacitor 122 of intermediate circuit is full of, charging current almost disappears.
When using the charging circuit of Figure 1B, switch 150 is in the state of conducting.Then switch 150 is opened, and switch 140 is in the state of conducting.
Fig. 2 A shows an embodiment of charging circuit of the present utility model.Element 104,108,120 in Fig. 2 A is substantially identical with the corresponding element in Figure 1A with 122.
The charging circuit of Fig. 2 A has saturable single-phase transformer 220, and adopts the diode bridge being arranged in direct-flow intermediate circuit 120 as rectifier.In direct-flow intermediate circuit 120, two capacitors 240 are connected in series in such a way, namely connect single-phase voltage between which.Described single-phase voltage is connected by saturable single-phase transformer 220.In this way, by the secondary section of diode bridge, transformer and the capacitor 240 that is connected in series define can be double by the charging voltage in described intermediate circuit multiplier.So, the size of the secondary section of transformer 22 can reach the half of the total voltage of supply voltage source.The charging circuit of Fig. 2 B can also comprise fuse wire 212 and 210.
Switch 230 in Fig. 2 A can make transformer 220 with total voltage and separate with direct-flow intermediate circuit 120.When switch 230 is opened and switch 104 closes, total voltage can only directly be connected by inductance 108 and direct-flow intermediate circuit 120.
Show second embodiment of charging circuit of the present invention in fig. 2b.Element 104,108,120 in Fig. 2 B is substantially identical with the corresponding element in Figure 1A with 122, and element 120 is substantially identical with the corresponding element in Fig. 2 A with 240.
The difference of Fig. 2 B and Fig. 2 A is, saturable transformer 250 that can be electrically isolated replaces single-phase saturable transformer 220 to work as transformer.As shown in Figure 2 A and 2 B, in direct-flow intermediate circuit 120, two capacitors 240 are connected in series in such a way, namely connect single-phase voltage between which.Described single-phase voltage is connected by saturable transformer 250 that can be electrically isolated.In this way, by the secondary section of diode bridge, transformer and the capacitor 240 that is connected in series define can be double by the charging voltage in described intermediate circuit multiplier.So, the size of the secondary section of transformer 22 can reach the half of the total voltage of supply voltage source.
The advantage of the charging circuit of Fig. 2 A and Fig. 2 B is, compared with the charging circuit based on passive resistance, can determine the size of charging circuit more easily.Another advantage is, can not produce direct resistive loss in the charge circuit as in charging resistor.
At least can charge with less loss according in some charging circuit of embodiment of the present utility model, and in charging process, the voltage of charging transformer can remain the half of the voltage of supply network.Like this, the size of charging current can be limited more easily when charging and starting.
Embodiment of the present utility model is not limited to content as described above, and it will be apparent to those skilled in the art that the technology distortion of technique scheme all can realize the utility model, and is all in protection range of the present utility model.
The technical solution of the utility model as described above employs the electronic component of specifying.But it will be clear to one skilled in the art that the element that can also to use other based on technical conceive of the present utility model, equally with element as described above produce identical technique effect.
Claims (8)
1. the device that is connected with supply voltage source of energy, it comprises:
Comprise the intermediate circuit (120) of diode bridge, the electric current that described diode bridge is arranged to entering into described intermediate circuit from described supply voltage source carries out rectification;
Be in the switch (104) between described supply voltage source and described intermediate circuit (120);
Charging circuit, it is arranged to charging voltage to guide to described intermediate circuit (120) electrically from described supply voltage source, so that at least two capacitor chargings, described charging voltage is arranged at least in part in described switch (104) place's conducting;
It is characterized in that, described intermediate circuit at least comprises two capacitors (240), and the charging voltage described in connection between at least two capacitors (240) is arranged to by described charging circuit.
2. device according to claim 1, is characterized in that, described charging circuit comprises single-phase saturable transformer.
3. device according to claim 2, is characterized in that, the secondary voltage of described single-phase saturable transformer is approximately the half of primary voltage.
4. the device according to Claims 2 or 3, it is characterized in that, form multiplier by the secondary section of described diode bridge, described single-phase saturable transformer and described at least two capacitors (240), described multiplier is by double for the charging voltage in described intermediate circuit.
5. device according to claim 1, is characterized in that, described charging circuit comprises saturable transformer that can be electrically isolated.
6. device according to claim 5, is characterized in that, the described secondary voltage of saturable transformer that can be electrically isolated is approximately the half of primary voltage.
7. the device according to claim 5 or 6, it is characterized in that, by described diode bridge, described can be electrically isolated the secondary section of saturable transformer and described at least two capacitors (240) form multiplier, described multiplier is by double for the charging voltage in described intermediate circuit.
8. according to claim 1, the device described in 2,3,5 or 6, is characterized in that, two capacitors (240) be included in described intermediate circuit are connected in series.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FIU20144041 | 2014-02-20 | ||
| FIU20144041U FI10496U1 (en) | 2014-02-20 | 2014-02-20 | Capacitor Charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761281U true CN204761281U (en) | 2015-11-11 |
Family
ID=51031586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520110736.4U Active CN204761281U (en) | 2014-02-20 | 2015-02-15 | A charging device for condenser |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN204761281U (en) |
| DE (1) | DE202015100283U1 (en) |
| FI (1) | FI10496U1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967300B (en) | 2015-05-27 | 2018-04-10 | 阳光电源股份有限公司 | A kind of pre-charge circuit and photovoltaic DC-to-AC converter |
-
2014
- 2014-02-20 FI FIU20144041U patent/FI10496U1/en active IP Right Grant
-
2015
- 2015-01-22 DE DE201520100283 patent/DE202015100283U1/en active Active
- 2015-02-15 CN CN201520110736.4U patent/CN204761281U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202015100283U1 (en) | 2015-03-23 |
| FI10496U1 (en) | 2014-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190220 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Helsinki Patentee before: ABB AB |