WO2023087595A1 - 双向储能变流器 - Google Patents
双向储能变流器 Download PDFInfo
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- WO2023087595A1 WO2023087595A1 PCT/CN2022/083045 CN2022083045W WO2023087595A1 WO 2023087595 A1 WO2023087595 A1 WO 2023087595A1 CN 2022083045 W CN2022083045 W CN 2022083045W WO 2023087595 A1 WO2023087595 A1 WO 2023087595A1
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- Prior art keywords
- switch
- switch assembly
- module
- assembly
- diode
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 101
- 238000004146 energy storage Methods 0.000 title claims abstract description 101
- 239000003990 capacitor Substances 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 230000000712 assembly Effects 0.000 description 10
- 238000000429 assembly Methods 0.000 description 10
- 238000007599 discharging Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
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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
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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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
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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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
- H02M7/42—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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
Definitions
- the present application relates to the technical field of energy storage, in particular, to a bidirectional energy storage converter.
- the bidirectional energy storage converter operates at a low modulation ratio, that is, when charging or discharging at high voltage, the junction temperature of the diode in the bidirectional converter is particularly high, and the temperature of the semiconductor is unbalanced, resulting in The device needs to be derated for use.
- This application aims to solve at least one of the technical problems existing in the prior art.
- the present application proposes a bidirectional energy storage converter.
- each bridge arm includes: a first switch assembly, the first end of the first switch assembly is connected to the positive pole of the DC busbar ;
- the second switch assembly the first end of the second switch assembly is connected to the second end of the first switch assembly;
- the third switch assembly the first end of the third switch assembly is connected to the second end of the second switch assembly, the second The first end of the third switch assembly is connected to the AC busbar;
- the fourth switch assembly the first end of the fourth switch assembly is connected to the second end of the third switch assembly, and the second end of the fourth switch assembly is connected to the DC busbar Negative connection;
- the fifth switch component the first end of the fifth switch component is connected to the first end of the second switch component, the second end of the fifth switch component is connected to the 0 pole of the DC busbar;
- the sixth switch component the first The first end of the six switch assembly is connected to the second end of the fifth switch assembly, the second end of the sixth switch assembly is connected to the
- the present application defines a bidirectional energy storage converter.
- the bidirectional energy storage converter includes at least one bridge arm, and each bridge arm includes six switch assemblies, wherein each switch assembly includes a switch tube and a A diode, the switch tube in each switch component is connected in parallel with the diode.
- the first end of the first switch assembly and the second end of the fourth switch assembly are respectively connected to the positive pole of the DC bus bar and the negative pole of the DC bus bar, and the second switch assembly is connected between the first switch assembly and the fourth switch assembly and a third switch assembly.
- the first end of the second switch assembly is connected to the second end of the first switch assembly
- the first end of the third switch assembly is connected to the second end of the second switch assembly
- the second end of the third switch assembly It is connected with the first end of the fourth switch assembly
- the common end of the second switch assembly and the third switch assembly is connected with the AC busbar.
- the common end of the first switch assembly and the second switch assembly is connected to the first end of the fifth switch assembly
- the common end of the third switch assembly and the fourth switch assembly is connected to the second end of the sixth switch assembly.
- the second end of the switch assembly is connected to the first end of the sixth switch assembly
- the common end of the fifth switch assembly and the sixth switch assembly is connected to the 0 pole of the DC bus bar.
- the bidirectional energy storage converter includes multiple bridge arms
- the common ends of the fifth switch assembly and the sixth switch assembly in each bridge arm of the multiple bridge arms are connected to the DC busbar.
- the 0 poles are connected
- the first switch component and the fourth switch component are respectively connected to the positive pole and the negative pole of the DC busbar
- the common terminals of the second switch component and the third switch component are connected to the AC busbar as the AC connection terminal.
- the bidirectional energy storage converter includes three bridge arms, and the AC connection ends of the three bridge arms are respectively connected to phase A, phase B and phase C of the AC busbar.
- the junction temperature of the two clamping diodes is particularly high, resulting in unbalanced temperature of the semiconductors in the bidirectional energy storage converter. If it is necessary to continue to operate under the condition of low modulation ratio, it is necessary to reduce the capacity of the bidirectional energy storage converter.
- the two clamping diodes in the bidirectional energy storage converter are replaced by the fifth switch assembly and the sixth switch assembly, because both the fifth switch assembly and the sixth switch assembly include parallel diodes and switch tubes , to realize the effect of shunting the current flowing through the fifth switch component and the sixth switch component, so that the current value flowing through the fifth switch component and the sixth switch component is lower, thereby avoiding the clamped diode junction in the related art The problem of high temperature.
- Each bridge arm in the bidirectional energy storage converter is provided with a resistance component, and the resistance component includes four connection terminals, wherein the first terminal, the second terminal, the third terminal and the fourth terminal are respectively connected to the fifth switch component , the sixth switch component, the first switch component and the fourth switch component are connected.
- the resistance component can balance the voltage of the clamped fifth switch component and the sixth switch component, so that the voltage of the clamped fifth switch component and the sixth switch component can be more balanced, and can also balance the main voltage of the bidirectional energy storage converter.
- the first switch component, the second switch component, the third switch component and the fourth switch component in the circuit perform voltage balancing, so that the voltage among the switch components on the main circuit of the bidirectional energy storage converter is more balanced.
- the switching tube is a controllable switching device, and the switching tube is controlled to be turned on and off periodically when the bidirectional energy storage converter is performing high-voltage charging or high-voltage discharging.
- the switch tube is controlled to turn on, and the current flowing through the diode in the switch assembly is shunted. This reduces the current flowing through the resistor.
- the switching tube By controlling the switching tube to be turned on and off periodically, the current flowing through the diode can be periodically shunted, so that the diode has enough time to dissipate heat, and the problem of rapid temperature rise of the diode in the switch component is avoided.
- the switch tube is a controllable switch device, and the switch tube is controlled to maintain the open state continuously when the bidirectional energy storage converter performs high-voltage charging or high-voltage discharge.
- the switch tube is controlled to turn on, and the current flowing through the diode in the switch assembly is shunted. This reduces the current flowing through the resistor.
- the switch tube By controlling the switch tube to maintain a continuous path, the current flowing through the diode can be continuously shunted, and the problem of rapid temperature rise of the diode in the switch component can be avoided.
- first switch component, the second switch component, the third switch component, the fourth switch component, the fifth switch component and the sixth switch component can be set to the same hardware structure, which simplifies the bidirectional energy storage converter
- the structure in the structure reduces the production cost of the bidirectional energy storage converter.
- the first switch assembly includes: a first switch tube, the first end of the first switch tube is connected to the anode of the DC bus bar; a first diode, the anode of the first diode is connected to the first switch The second end of the tube is connected, the cathode of the first diode is connected to the first end of the first switch tube;
- the second switch assembly includes: a second switch tube, the first end of the second switch tube is connected to the first end of the first switch tube The second end is connected; the second diode, the anode of the second diode is connected with the second end of the second switch tube, and the cathode of the second diode is connected with the first end of the second switch tube;
- the third switch The assembly includes: a third switching tube, the first end of the third switching tube is connected to the second end of the second switching tube, and the first end of the third switching tube is connected to the AC busbar; the third diode, the third The anode of the diode is connected to the second
- diodes and switch tubes are all provided in the first switch assembly, the second switch assembly, the third switch assembly, the fourth switch assembly, the fifth switch assembly and the sixth switch assembly.
- the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are connected end to end, and the first end of the first switching tube is connected to the positive pole of the DC busbar, and the fourth switching tube is connected to The second end of the tube is connected to the negative pole of the DC busbar.
- the first end of the fifth switch tube is connected to the common end of the first switch tube and the second switch tube
- the second end of the sixth switch tube is connected to the common end of the third switch tube and the fourth switch tube
- the fifth switch tube The common end of the transistor and the sixth switching transistor is connected to the 0 pole of the DC busbar
- the common end of the second switching transistor and the third switching transistor is connected to the AC busbar.
- the fifth diode and the sixth diode are the clamping diodes of the bidirectional energy storage converter, and the fifth switching tube and the sixth switching tube are connected in parallel on the fifth diode and the sixth diode, This avoids the problem of rapid heating of the fifth diode and the sixth diode in the case of high-voltage charging or high-voltage discharging of the bidirectional energy storage converter.
- the compact laminated busbar technology with ultra-low stray inductance is selected for the DC busbar. It can effectively reduce the distributed inductance.
- the resistor assembly includes: a first resistor, the first end of the first resistor is connected to the first end of the fifth switch assembly, and the second end of the first resistor is connected to the second end of the sixth switch assembly.
- the resistor component includes a first resistor.
- Both ends of the first resistor are respectively connected to the first terminal of the fifth switch component and the second terminal of the sixth switch component, that is, the two ends of the first resistor are respectively connected to the two clamped switch components.
- the resistor assembly includes: a second resistor, the first end of the second resistor is connected to the first end of the first switch assembly; a third resistor, the first end of the third resistor is connected to the second end of the second resistor, and the third resistor The second end of the second end is connected to the second end of the fourth switch assembly.
- the resistor assembly includes a second resistor and a third resistor.
- the second resistor is connected in series with the third resistor, the second resistor is also connected with the first terminal of the first switch component, and the third resistor is also connected with the fourth switch component.
- each bridge arm further includes: a first capacitor, the first end of the first capacitor is connected to the positive pole of the DC busbar; a second capacitor, the first end of the second capacitor is connected to the positive pole of the first capacitor The second terminal is connected to the 0 pole of the DC busbar, and the second terminal of the second capacitor is used to connect to the negative pole of the DC busbar.
- a first capacitor is arranged between the positive pole and the zero pole of the direct current busbar, and a second capacitor is arranged between the negative pole and the zero pole of the direct current busbar.
- the bidirectional energy storage converter further includes: a cooling element, which is arranged correspondingly to at least one bridge arm.
- a cooling element is also arranged in the bidirectional energy storage converter.
- the radiator is arranged inside the bidirectional energy storage converter, and the radiator is arranged correspondingly to the bridge arm in the bidirectional energy storage converter.
- the electronic components in the bridge arms of the bidirectional energy storage converter can be dissipated through the heat sink.
- the bridge arm is attached to the heat sink.
- the contact area between the electronic components on the bridge arm and the heat sink can be increased by arranging the heat sink in contact with the bridge arm, thereby improving the heat dissipation effect of the heat sink on the electronic components on the bridge arm.
- the bridge arm is disposed on the heat sink.
- the circuit structure on the bridge arm of the bidirectional energy storage converter is directly connected to the heat sink, specifically, the circuit board of the circuit structure is connected to the heat sink.
- the stability of the contact between the heat sink and the bridge arm can also be ensured.
- cooling element can be selected as one or a combination of plate heat exchangers and cooling fins.
- the heat sink can also choose air-cooled or water-cooled heat sink components.
- the first switch assembly and the fifth switch assembly are the first module
- the fourth switch assembly and the sixth switch assembly are the second module
- the second switch assembly and the third switch assembly are the third module
- the first module, the second module and the third module are modules of the same model.
- the first switch assembly and the fifth switch assembly are integrated into a first module
- the fourth switch assembly and the sixth switch assembly are integrated into a second module
- the second switch assembly and the third switch assembly are integrated become the third module.
- first switch component, the fifth switch component, the sixth switch component and the fourth switch component are all connected to the DC bus, so the adjacent first switch component and fifth switch component are integrated into the first module , and the adjacent fourth switch assembly and sixth switch assembly are integrated into the second module, so that the current path between the DC bus and the first module and the second module can be reduced.
- the common end of the second switch assembly and the third switch assembly is connected to the AC bus, so the close second switch assembly and the third switch assembly are integrated into the third module, thereby reducing the distance between the AC bus and the second module. the current path.
- This application not only reduces the production cost of the bidirectional energy storage converter by integrating the first switch assembly, the second switch assembly, the third switch assembly, the fourth switch assembly, the fifth switch assembly and the sixth switch assembly in pairs , can also reduce the minimum commutation path of the bidirectional energy storage converter, and further reduce the problem of excessive temperature of electronic devices in the bidirectional energy storage converter.
- the first modules and the second modules are sequentially distributed along the first direction
- the first modules and the third modules are sequentially distributed along the second direction.
- the first module and the second module are arranged side by side on the heat sink, and since the first module and the second module are connected to the DC busbar, the first module and the second module are arranged side by side On the heat sink, the distance between the first module and the second module and the DC busbar can be relatively close, and the third module can be arranged to be staggered from the first module and the second module, so that the first module and the second module can be avoided.
- the line between the module and the third module will not cross the line between the first module and the second module, and on the premise of ensuring that the current path between the first module, the second module and the third module is small, it improves the The effect of heat dissipation on the first module, the second module and the third module, and the lines between the modules.
- the first switch assembly and the second switch assembly are the first module
- the third switch assembly and the fourth switch assembly are the second module
- the fifth switch assembly and the sixth switch assembly are the third module
- the first module, the second module and the third module are modules of the same model.
- the first switch assembly and the second switch assembly are integrated into a first module
- the third switch assembly and the fourth switch assembly are integrated into a second module
- the fifth switch assembly and the sixth switch assembly are integrated become the third module.
- both the fifth switch component and the sixth switch component are clamped switch components in the bidirectional energy storage converter, and the common terminal of the fifth switch component and the sixth switch component is connected to the 0 pole phase of the DC busbar. connection, integrating the fifth switch component and the sixth switch component into a third module.
- the first switch assembly and the second switch assembly are connected to the positive pole of the DC bus, and the first switch assembly and the second switch assembly are integrated into a first module.
- the third switch assembly and the fourth switch assembly are connected to the negative pole of the DC bus. Integrate each switch assembly according to the above method, so that the first module, the second module and the third module are all connected to the DC busbar, so as to ensure that the lines between the three modules do not overlap. The distance between them is set relatively small, thereby reducing the occupied space of the electronic components on the bridge arm in the bidirectional energy storage converter.
- the first module, the second module and the third module are distributed sequentially along the extending direction of the heat sink.
- the first module, the second module and the third module are all connected to the DC busbar, and the second module and the third module are connected to the AC busbar, it is possible to connect the first module, the second module and the The third modules are arranged side by side. Since the heat sink is used to dissipate heat from the first module, the second module and the third module, the size of the heat sink is adapted to the size of the first module, the second module and the third module, so not only can the electronic The occupied space of the components can also be reduced, and the occupied space of the heat sink corresponding to the electronic components can be reduced.
- Fig. 1 shows one of the structural schematic diagrams of bridge arms in a bidirectional energy storage converter according to an embodiment of the present application
- Fig. 2 shows the second structural schematic diagram of the bridge arm in the bidirectional energy storage converter according to an embodiment of the present application
- Fig. 3 shows one of the structural schematic diagrams of a bidirectional energy storage converter according to an embodiment of the present application
- Fig. 4 shows the third structural schematic diagram of the bridge arm in the bidirectional energy storage converter according to an embodiment of the present application
- Fig. 5 shows the second structural schematic diagram of a bidirectional energy storage converter according to an embodiment of the present application.
- a bidirectional energy storage converter according to some embodiments of the present application will be described below with reference to FIGS. 1 to 5 .
- the first aspect of this embodiment provides a bidirectional energy storage converter, including: at least one bridge arm 100, wherein each bridge arm 100 includes: a first switch assembly 110, a second The second switch component 120 , the third switch component 130 , the fourth switch component 140 , the fifth switch component 150 , the sixth switch component 160 and the resistor component 170 .
- the first end of the first switch assembly 110 is connected to the positive pole of the DC bus bar
- the first end of the second switch assembly 120 is connected to the second end of the first switch assembly 110;
- the first end of the third switch assembly 130 is connected to the second end of the second switch assembly 120, and the first end of the third switch assembly 130 is connected to the AC busbar;
- the first end of the fourth switch assembly 140 is connected to the second end of the third switch assembly 130, and the second end of the fourth switch assembly 140 is connected to the negative pole of the DC bus bar;
- the first end of the fifth switch assembly 150 is connected to the first end of the second switch assembly 120, and the second end of the fifth switch assembly 150 is connected to the 0 pole of the DC bus bar;
- the first end of the sixth switch assembly 160 is connected to the second end of the fifth switch assembly 150, and the second end of the sixth switch assembly 160 is connected to the first end of the fourth switch assembly 140;
- the first end of the resistance assembly 170 is connected to the first end of the fifth switch assembly 150, the second end of the resistance assembly 170 is connected to the second end of the sixth switch assembly 160, and the third end of the resistance assembly 170 is connected to the first switch assembly.
- 110 is connected to the first terminal, and the fourth terminal of the resistance component 170 is connected to the second terminal of the fourth switch component 140 .
- the first switch component 110 , the second switch component 120 , the third switch component 130 , the fourth switch component 140 , the fifth switch component 150 and the sixth switch component 160 each include a switch tube and a diode.
- the present application defines a bidirectional energy storage converter.
- the bidirectional energy storage converter includes at least one bridge arm 100, and each bridge arm 100 includes six switch assemblies, wherein each switch assembly includes a switch tube and a diode, and the switch tube in each switch assembly is connected in parallel with the diode.
- the first end of the first switch assembly 110 and the second end of the fourth switch assembly 140 are respectively connected to the positive pole of the DC busbar and the negative pole of the DC busbar, and a connection between the first switch assembly 110 and the fourth switch assembly 140
- the second switch assembly 120 and the third switch assembly 130 are respectively connected to the positive pole of the DC busbar and the negative pole of the DC busbar.
- the first end of the second switch assembly 120 is connected to the second end of the first switch assembly 110
- the first end of the third switch assembly 130 is connected to the second end of the second switch assembly 120
- the third switch assembly The second end of 130 is connected to the first end of the fourth switch assembly 140
- the common end of the second switch assembly 120 and the third switch assembly 130 is connected to the AC busbar.
- the common end of the first switch assembly 110 and the second switch assembly 120 is connected to the first end of the fifth switch assembly 150
- the common end of the third switch assembly 130 and the fourth switch assembly 140 is connected to the first end of the sixth switch assembly 160.
- Two-terminal connection, the second end of the fifth switch assembly 150 is connected to the first end of the sixth switch assembly 160
- the common end of the fifth switch assembly 150 and the sixth switch assembly 160 is connected to the 0 pole of the DC busbar .
- the bidirectional energy storage converter includes multiple bridge arms 100
- the common terminals of the fifth switch assembly 150 and the sixth switch assembly 160 in each bridge arm 100 of the multiple bridge arms 100 are It is connected to the 0 pole of the DC busbar
- the first switch assembly 110 and the fourth switch assembly 140 are respectively connected to the positive pole and the negative pole of the DC busbar
- the common terminals of the second switch assembly 120 and the third switch assembly 130 are used as AC The connecting end is connected with the AC busbar.
- the bidirectional energy storage converter includes three bridge arms 100, and the AC connection ends of the three bridge arms 100 are respectively connected to phase A, phase B and phase C of the AC busbar.
- the junction temperature of the clamping diodes is particularly high, resulting in unbalanced temperature of the semiconductors in the bidirectional energy storage converter . If it is necessary to continue to operate under the condition of low modulation ratio, it is necessary to reduce the capacity of the bidirectional energy storage converter.
- the two clamping diodes in the bidirectional energy storage converter are replaced by the fifth switch assembly 150 and the sixth switch assembly 160, because both the fifth switch assembly 150 and the sixth switch assembly 160 include phase-parallel Diodes and switch tubes realize the function of shunting the current flowing through the fifth switch component 150 and the sixth switch component 160, so that the current value flowing through the fifth switch component 150 and the sixth switch component 160 is lower, thereby avoiding The problem of high junction temperature of clamped diodes in the related art is solved.
- Each bridge arm 100 in the bidirectional energy storage converter is provided with a resistance assembly 170, and the resistance assembly 170 includes four connection terminals, wherein the first terminal, the second terminal, the third terminal and the fourth terminal are respectively connected to the first terminal
- the fifth switch component 150 , the sixth switch component 160 , the first switch component 110 and the fourth switch component 140 are connected.
- the resistance component 170 can balance the voltage of the clamped fifth switch component 150 and the sixth switch component 160, make the voltage of the clamped fifth switch component 150 and the sixth switch component 160 more balanced, and can also store bidirectional energy
- the first switch assembly 110, the second switch assembly 120, the third switch assembly 130 and the fourth switch assembly 140 in the main circuit of the converter perform voltage balancing, so that the switch assemblies on the main circuit of the bidirectional energy storage converter The voltage between them is more balanced.
- the switching tube is a controllable switching device, and the switching tube is controlled to be turned on and off periodically when the bidirectional energy storage converter is performing high-voltage charging or high-voltage discharging.
- the switch tube is controlled to turn on, and the current flowing through the diode in the switch assembly is shunted. This reduces the current flowing through the resistor.
- the switching tube By controlling the switching tube to be turned on and off periodically, the current flowing through the diode can be periodically shunted, so that the diode has enough time to dissipate heat, and the problem of rapid temperature rise of the diode in the switch component is avoided.
- the switch tube is a controllable switch device, and the switch tube is controlled to maintain the open state continuously when the bidirectional energy storage converter performs high-voltage charging or high-voltage discharge.
- the switch tube is controlled to turn on, and the current flowing through the diode in the switch assembly is shunted. This reduces the current flowing through the resistor.
- the switch tube By controlling the switch tube to maintain a continuous path, the current flowing through the diode can be continuously shunted, and the problem of rapid temperature rise of the diode in the switch component can be avoided.
- first switch assembly 110, the second switch assembly 120, the third switch assembly 130, the fourth switch assembly 140, the fifth switch assembly 150 and the sixth switch assembly 160 can be set to the same hardware structure, which simplifies The structure in the bidirectional energy storage converter reduces the production cost of the bidirectional energy storage converter.
- the bidirectional energy storage converter can control the charging and discharging process of the battery, perform AC-DC conversion, and can directly supply power to AC loads in the absence of a grid.
- the first switch assembly 110 includes: a first switch tube 112 and a first diode 114 .
- the first end of the first switching tube 112 is connected to the positive pole of the DC bus bar;
- the anode of the first diode 114 is connected to the second end of the first switch tube 112, and the cathode of the first diode 114 is connected to the first end of the first switch tube 112;
- the second switch component 120 includes: a second switch tube 122 and a second diode 124 .
- the first end of the second switch tube 122 is connected to the second end of the first switch tube 112;
- the anode of the second diode 124 is connected to the second end of the second switch tube 122, and the cathode of the second diode 124 is connected to the first end of the second switch tube 122;
- the third switch component 130 includes: a third switch tube 132 and a third diode 134 .
- the first end of the third switching tube 132 is connected to the second end of the second switching tube 122, and the first end of the third switching tube 132 is connected to the AC busbar;
- the anode of the third diode 134 is connected to the second end of the third switch tube 132, and the cathode of the third diode 134 is connected to the first end of the third switch tube 132;
- the fourth switch component 140 includes: a fourth switch tube 142 and a fourth diode 144 .
- the first end of the fourth switching tube 142 is connected to the second end of the third switching tube 132, and the second end of the fourth switching tube 142 is connected to the negative pole of the DC bus bar;
- the anode of the fourth diode 144 is connected to the second end of the fourth switch tube 142, and the cathode of the fourth diode 144 is connected to the first end of the fourth switch tube 142;
- the fifth switch component 150 includes: a fifth switch tube 152 and a fifth diode 154 .
- the first end of the fifth switching tube 152 is connected to the first end of the second switching tube 122, and the second end of the fifth switching tube 152 is connected to the 0 pole of the DC bus bar;
- the anode of the fifth diode 154 is connected to the second end of the fifth switch tube 152, and the cathode of the fifth diode 154 is connected to the first end of the fifth switch tube 152;
- the sixth switch component 160 includes: a sixth switch tube 162 and a sixth diode 164 .
- the first end of the sixth switch tube 162 is connected to the second end of the fifth switch tube 152, and the second end of the sixth switch tube 162 is connected to the first end of the fourth switch tube 142;
- the anode of the sixth diode 164 is connected to the second end of the sixth switch transistor 162 , and the cathode of the sixth diode 164 is connected to the first end of the sixth switch transistor 162 .
- the first switch assembly 110 , the second switch assembly 120 , the third switch assembly 130 , the fourth switch assembly 140 , the fifth switch assembly 150 and the sixth switch assembly 160 are provided with diodes and switch tubes.
- the first switching tube 112, the second switching tube 122, the third switching tube 132 and the fourth switching tube 142 are connected end to end, and the first end of the first switching tube 112 is connected to the positive pole of the DC busbar, And connect the second end of the fourth switch tube 142 to the negative pole of the DC bus.
- the first end of the fifth switch tube 152 is connected to the common end of the first switch tube 112 and the second switch tube 122, and the second end of the sixth switch tube 162 is connected to the third switch tube 132 and the fourth switch tube 142.
- the common terminal, the common terminal of the fifth switching tube 152 and the sixth switching tube 162 is connected to the 0 pole of the DC busbar, and the common terminal of the second switching tube 122 and the third switching tube 132 is connected to the AC busbar.
- the first diode 114 and the second diode are respectively connected in parallel.
- tube 124 , third diode 134 , fourth diode 144 , fifth diode 154 and sixth diode 164 are respectively connected in parallel.
- the fifth diode 154 and the sixth diode 164 are the clamping diodes of the bidirectional energy storage converter, and the fifth switching tube 152 and the The sixth switching tube 162 avoids the problem of rapid heating of the fifth diode 154 and the sixth diode 164 in the case of high-voltage charging or high-voltage discharging of the bidirectional energy storage converter.
- the compact laminated busbar technology with ultra-low stray inductance is selected for the DC busbar. It can effectively reduce the distributed inductance.
- the resistor component 170 further includes: a first resistor 172 , a second resistor 174 and a third resistor 176 .
- the first end of the first resistor 172 is connected to the first end of the fifth switch assembly 150, the second end of the first resistor 172 is connected to the second end of the sixth switch assembly 160; the first end of the second resistor 174 Connected to the first end of the first switch assembly 110; the first end of the third resistor 176 is connected to the second end of the second resistor 174, and the second end of the third resistor 176 is connected to the second end of the fourth switch assembly 140 .
- the resistor assembly 170 includes a first resistor 172 , a second resistor 174 and a third resistor 176 .
- Both ends of the first resistor 172 are respectively connected to the first end of the fifth switch assembly 150 and the second end of the sixth switch assembly 160, that is, the two ends of the first resistor 172 are respectively connected to the two clamped switch assemblies .
- the second resistor 174 is connected in series with the third resistor 176 , the second resistor 174 is also connected to the first terminal of the first switch component 110 , and the third resistor 176 is also connected to the fourth switch component 140 .
- the first switch assembly 110 and the The second switch component 120 , the third switch component 130 and the fourth switch component 140 perform the function of balancing the voltage, which can ensure that the voltages of the four switch components on the main circuit are more balanced during the operation of the bidirectional energy storage converter.
- each bridge arm 100 further includes: a first capacitor 182 , a second capacitor 184 and a third capacitor.
- the first terminal of the first capacitor 182 is connected to the positive pole of the DC busbar
- the first terminal of the second capacitor 184 is connected to the second terminal of the first capacitor 182 and the 0 pole of the DC busbar
- the first terminal of the second capacitor 184 The two ends are used to connect with the negative pole of the DC busbar.
- a first capacitor 182 is arranged between the positive pole and the zero pole of the DC busbar, and a second capacitor 184 is arranged between the negative pole and the zero pole of the DC busbar.
- the stability of the DC voltage can be ensured by setting a capacitor between the positive pole, the zero pole and the negative pole of the DC busbar.
- the bidirectional energy storage converter further includes a heat sink 200 .
- the heat sink 200 is disposed corresponding to at least one bridge arm 100 .
- a heat sink 200 is also provided in the bidirectional energy storage converter.
- the cooling element 200 is arranged inside the bidirectional energy storage converter, and the cooling element 200 is arranged corresponding to the bridge arm 100 in the bidirectional energy storage converter.
- the electronic components in the bridge arm 100 of the bidirectional energy storage converter can be dissipated through the heat sink 200 .
- the bridge arm 100 is attached to the heat sink 200 .
- the contact area between the electronic components on the bridge arm 100 and the heat sink 200 can be increased, thereby improving the heat sink 200 on the bridge arm 100.
- the cooling effect of electronic components can be increased, thereby improving the heat sink 200 on the bridge arm 100.
- the bridge arm 100 is disposed on the heat sink 200 .
- the circuit structure on the bridge arm 100 of the bidirectional energy storage converter is directly connected to the heat sink 200 , specifically, the circuit board of the circuit structure is connected to the heat sink 200 .
- the stability of the contact between the heat sink 200 and the bridge arm 100 can also be ensured.
- cooling element 200 can be selected as one or a combination of a plate heat exchanger and a cooling fin.
- the heat sink 200 can also choose air-cooled or water-cooled heat sink components.
- the first switch assembly 110 and the fifth switch assembly 150 are the first module 192, the fourth switch assembly 140 and the fifth switch assembly 192.
- the six switch assembly 160 is the second module 194, the second switch assembly 120 and the third switch assembly 130 are the third module 196; wherein, the first module 192, the second module 194 and the third module 196 are modules of the same model.
- the first switch assembly 110 and the fifth switch assembly 150 are integrated into a first module 192
- the fourth switch assembly 140 and the sixth switch assembly 160 are integrated into a second module 194
- the second switch assembly 120 and the third switch assembly 130 are integrated into a third module 196 .
- the controls occupied by the circuit structure in the bidirectional energy storage converter can be reduced.
- the first module 192, the second module 194 and the third module 196 are provided with two switch assemblies, the first module 192, the second module 194 and the third module 196 can be selected as modules of the same type, realizing The purchase cost of the module is reduced, thereby reducing the production cost of the bidirectional energy storage converter.
- first switch assembly 110, the fifth switch assembly 150, the sixth switch assembly 160 and the fourth switch assembly 140 are all connected to the DC bus, so the close first switch assembly 110 and the fifth switch assembly 150
- the first module 192 is integrated, and the adjacent fourth switch assembly 140 and sixth switch assembly 160 are integrated into the second module 194, so that the distance between the DC bus and the first module 192 and the second module 194 can be reduced.
- current path The common end of the second switch assembly 120 and the third switch assembly 130 is connected to the AC bus, so the adjacent second switch assembly 120 and the third switch assembly 130 are integrated into the third module 196, so that the AC bus and the third module 196 can be reduced.
- the current path between the second modules 194 is
- the first switch assembly 110, the second switch assembly 120, the third switch assembly 130, the fourth switch assembly 140, the fifth switch assembly 150, and the sixth switch assembly 160 are integrated in pairs, which not only reduces the two-way storage
- the production cost of the energy storage converter can also reduce the minimum commutation path of the bidirectional energy storage converter, and further reduce the problem of excessive temperature of electronic devices in the bidirectional energy storage converter.
- the first module 192 and the second module 194 are distributed sequentially along the first direction
- the first module 192 and the third module 196 are distributed sequentially along the second direction.
- the first module 192 and the second module 194 are arranged to be distributed side by side on the heat sink 200. Since the first module 192 and the second module 194 are both connected to the DC busbar, the first module 192 Distributed side by side with the second module 194 on the heat sink 200, the distance between the first module 192 and the second module 194 and the DC busbar can be made closer, and the third module 196 is arranged to be connected to the first module 192 and the second Modules 194 are distributed in a staggered manner, which can avoid that the line between the first module 192 and the second module 194 and the third module 196 will not cross the line between the first module 192 and the second module 194, and ensure that the first module 192, On the premise that the current path between the second module 194 and the third module 196 is small, the effect of heat dissipation on the first module 192 , the second module 194 and the third module 196 and the lines between the modules is improved.
- the first switch assembly 110 and the second switch assembly 120 are the first module 192, the third switch assembly 130 and the second switch assembly 192
- the four switch assembly 140 is the second module 194, the fifth switch assembly 150 and the sixth switch assembly 160 are the third module 196; wherein, the first module 192, the second module 194 and the third module 196 are modules of the same type.
- the first switch assembly 110 and the second switch assembly 120 are integrated into a first module 192
- the third switch assembly 130 and the fourth switch assembly 140 are integrated into a second module 194
- the fifth switch assembly 150 and the sixth switch assembly 160 are integrated into a third module 196 .
- the controls occupied by the circuit structure in the bidirectional energy storage converter can be reduced.
- the first module 192, the second module 194 and the third module 196 are provided with two switch assemblies, the first module 192, the second module 194 and the third module 196 can be selected as modules of the same type, realizing The purchase cost of the module is reduced, thereby reducing the production cost of the bidirectional energy storage converter.
- both the fifth switch component 150 and the sixth switch component 160 are clamped switch components in the bidirectional energy storage converter, and the common terminal of the fifth switch component 150 and the sixth switch component 160 is connected to the DC busbar
- the 0 poles are connected, and the fifth switch assembly 150 and the sixth switch assembly 160 are integrated into a third module 196 .
- the first switch assembly 110 and the second switch assembly 120 are connected to the positive pole of the DC bus, and the first switch assembly 110 and the second switch assembly 120 are integrated into a first module 192 .
- the third switch assembly 130 and the fourth switch assembly 140 are connected to the negative pole of the DC bus.
- the various switch components are integrated in the above manner, so that the first module 192, the second module 194 and the third module 196 are all connected to the DC busbar, so as to ensure that the lines between the three modules do not overlap.
- the spacing between the three modules is set relatively small, thereby reducing the occupied space of the electronic components on the bridge arm 100 in the bidirectional energy storage converter.
- the first module 192 , the second module 194 and the third module 196 are distributed sequentially along the extending direction of the heat sink 200 .
- the first module 192, the second module 194 and the third module 196 are all connected to the DC busbar, and the second module 194 and the third module 196 are connected to the AC busbar, it is possible to connect the first module 192, the second module 194 and the third module 196 are arranged side by side. Since the heat sink 200 is used to dissipate heat from the first module 192, the second module 194 and the third module 196, the size of the heat sink 200 is adapted to the size of the first module 192, the second module 194 and the third module 196 Therefore, not only the occupied space of the electronic components can be reduced, but also the occupied space of the heat sink 200 corresponding to the electronic components can be reduced.
- the term “plurality” refers to two or more than two. Unless otherwise clearly defined, the orientations or positional relationships indicated by the terms “upper” and “lower” are based on the drawings. Orientation or positional relationship is only for the convenience of describing this embodiment and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to this embodiment. Restrictions; the terms “connected”, “installed”, “fixed”, etc. should be interpreted in a broad sense, for example, “connected” can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or connected indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
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Abstract
本申请提供了一种双向储能变流器,包括:至少一个桥臂(100),每一桥臂(100)包括依次串联的第一开关组件(110)、第二开关组件(120)、第三开关组件(130)、第四开关组件(140),第一开关组件(110)与直流母排正极、电阻组件(170)第三端连接,第四开关组件(140)与直流母排负极、电阻组件(170)第四端连接;第五开关组件(150)与第六开关组件(160)串联所构成的支路,其一端连接第一开关组件(110)、第二开关组件(120)连接点及电阻组件(170)第一端,其另一端连接第三开关组件(130)、第四开关组件(140)的连接点及电阻组件(170)第二端。由于第五开关组件(150)和第六开关组件(160)中均包括相并联的二极管和开关管,实现了对流经第五开关组件(150)和第六开关组件(160)的电流进行分流的作用,使流经第五开关组件(150)和第六开关组件(160)的电流值较低,从而避免了相关技术中箝位的二极管结温高的问题。
Description
本申请要求于2021年11月19日提交到中国国家知识产权局,申请号为“202111375171.9”,申请名称为“双向储能变流器”的中国专利,和于2021年11月19日提交到中国国家知识产权局,申请号为“202122855326.0”,申请名称为“双向储能变流器”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及储能技术领域,具体而言,涉及一种双向储能变流器。
在相关技术中,双向储能变流器在低调制比下运行的过程中,即在高压充电或者放电时,双向变流器中的二极管结温特别高,并且半导体温度不均衡,导致变流器需要进行降容使用。
申请内容
本申请旨在至少解决现有技术中存在的技术问题之一。
为此,本申请提出了一种双向储能变流器。
有鉴于此,本申请提供了一种双向储能变流器,包括:至少一个桥臂,每一桥臂包括:第一开关组件,第一开关组件的第一端与直流母排的正极连接;第二开关组件,第二开关组件的第一端与第一开关组件的第二端连接;第三开关组件,第三开关组件的第一端与第二开关组件的第二端连接,第三开关组件的第一端与交流母排连接;第四开关组件,第四开关组件的第一端与第三开关组件的第二端连接,第四开关组件的第二端与直流母排的负极连接;第五开关组件,第五开关组件的第一端与第二开关组件的第一端连接,第五开关组件的第二端与直流母排的0极连接;第六开关组件,第六开关组件的第一端与第五开关组件的第二端连接,第六开关组件的第二端与第四开关组件的第一端连接;电阻组件,电阻组件的第一端与第五 开关组件的第一端连接,电阻组件的第二端与第六开关组件的第二端连接,电阻组件的第三端与第一开关组件的第一端连接,电阻组件的第四端与第四开关组件连接;其中,第一开关组件、第二开关组件、第三开关组件、第四开关组件、第五开关组件和第六开关组件中均包括一个开关管和一个二极管。
本申请限定了一种双向储能变流器,双向储能变流器包括至少一个桥臂,每个桥臂中包括六个开关组件,其中,每个开关组件中均包括一个开关管和一个二极管,每个开关组件中的开关管与二极管相并联。第一开关组件的第一端和第四开关组件的第二端分别连接于直流母排的正极和直流母排的负极,在第一开关组件与第四开关组件之间连接有第二开关组件和第三开关组件。其中,第二开关组件的第一端与第一开关组件的第二端相连接,第三开关组件的第一端与第二开关组件的第二端相连接,第三开关组件的第二端与第四开关组件的第一端相连接,第二开关组件和第三开关组件的公共端与交流母排相连接。在第一开关组件与第二开关组件的公共端与第五开关组件的第一端连接,在第三开关组件与第四开关组件的公共端与第六开关组件的第二端连接,第五开关组件的第二端与第六开关组件的第一端相连接,且第五开关组件和第六开关组件的公共端与直流母排的0极相连接。
值得说明的是,双向储能变流器中包括多个桥臂的情况下,多个桥臂中每个桥臂中的第五开关组件和第六开关组件的公共端均与直流母排的0极相连接,第一开关组件和第四开关组件分别与直流母排的正极和负极相连接,第二开关组件和第三开关组件的公共端均作为交流连接端与交流母排相连接。
在一些实施例中,双向储能变流器中包括三个桥臂,三个桥臂中的交流连接端均分别与交流母排的A相、B相和C相相连接。
现有技术中,两个箝位二极管,在双向储能变流器在低调制比的工况下运行时,箝位二极管结温特别高,导致双向储能变流器中半导体温度不均衡。如果需要继续在低调制比的工况下运行,则需要对双向储能变流器降容使用。
本申请中将双向储能变流器中的两个箝位的二极管替换为第五开关组件和第六开关组件,由于第五开关组件和第六开关组件中均包括相并联的二极管和开关管,实现了对流经第五开关组件和第六开关组件的电流进行分流的作 用,使流经第五开关组件和第六开关组件的电流值较低,从而避免了相关技术中箝位的二极管结温高的问题。
双向储能变流器中的每个桥臂中均设置有电阻组件,电阻组件包括四个连接端,其中,第一端、第二端、第三端和第四端分别与第五开关组件、第六开关组件、第一开关组件和第四开关组件相连。电阻组件能够对箝位的第五开关组件和第六开关组件进行电压平衡,使箝位的第五开关组件和第六开关组件的电压更加均衡,并且还能够对双向储能变流器的主回路中的第一开关组件、第二开关组件、第三开关组件和第四开关组件进行电压平衡,使双向储能变流器的主回路上的开关组件之间的电压更加均衡。
在一些实施例中,开关管为可控开关器件,在双向储能变流器进行高压充电或者高压放电的情况下,控制开关管周期性通断。
在这些实施例中,在双向储能变流器进行高电压充电或高电压放电时,由于开关组件中的开关管和二极管相并联,控制开关管开启,对流经开关组件中的二极管进行分流,从而降低流经电阻的电流。通过控制开关管周期性通断,能够对流经二极管的电流进行周期性分流,使二极管有足够的时间进行散热,避免了开关组件中的二极管出现快速升温的问题。
在另外一些实施例中,开关管为可控开关器件,在双向储能变流器进行高压充电或者高压放电的情况下,控制开关管持续保持通路状态。
在这些实施例中,在双向储能变流器进行高电压充电或高电压放电时,由于开关组件中的开关管和二极管相并联,控制开关管开启,对流经开关组件中的二极管进行分流,从而降低流经电阻的电流。通过控制开关管持续保持通路,能够对流经二极管的电流进行持续分流,避免了开关组件中的二极管出现快速升温的问题。
可以理解的是,第一开关组件、第二开关组件、第三开关组件、第四开关组件、第五开关组件和第六开关组件可设置为相同的硬件结构,简化了双向储能变流器中的结构,降低了双向储能变流器的生产成本。
另外,本申请提供的上述双向储能变流器还可以具有如下附加技术特征:
在上述技术方案中,第一开关组件包括:第一开关管,第一开关管的第一端与直流母排的正极连接;第一二极管,第一二极管的正极与第一开关 管的第二端连接,第一二极管的负极与第一开关管的第一端连接;第二开关组件包括:第二开关管,第二开关管的第一端与第一开关管的第二端连接;第二二极管,第二二极管的正极与第二开关管的第二端连接,第二二极管的负极与第二开关管的第一端连接;第三开关组件包括:第三开关管,第三开关管的第一端与第二开关管的第二端连接,第三开关管的第一端与交流母排相连接;第三二极管,第三二极管的正极与第三开关管的第二端连接,第三二极管的负极与第三开关管的第一端连接;第四开关组件包括:第四开关管,第四开关管的第一端与第三开关管的第二端连接,第四开关管的第二端与直流母排的负极连接;第四二极管,第四二极管的正极与第四开关管的第二端连接,第四二极管的负极与第四开关管的第一端连接;第五开关组件包括:第五开关管,第五开关管的第一端与第二开关管的第一端连接,第五开关管的第二端与直流母排的0极连接;第五二极管,第五二极管的正极与第五开关管的第二端连接,第五二极管的负极与第五开关管的第一端连接;第六开关组件包括:第六开关管,第六开关管的第一端与第五开关管的第二端连接,第六开关管的第二端与第四开关管的第一端连接;第六二极管,第六二极管的正极与第六开关管的第二端连接,第六二极管的负极与第六开关管的第一端连接。
在该技术方案中,第一开关组件、第二开关组件、第三开关组件、第四开关组件、第五开关组件和第六开关组件中均设置有二极管和开关管。其中,第一开关管、第二开关管、第三开关管和第四开关管之间首尾相连,并将第一开关管的第一端与直流母排的正极相连接,以及将第四开关管的第二端与直流母排的负极相连接。第五开关管的第一端连接至第一开关管的与第二开关管的公共端,第六开关管的第二端连接至第三开关管与第四开关管的公共端,第五开关管和第六开关管的公共端与直流母排的0极相连接,第二开关管和第三开关管的公共端与交流母排相连接。在第一开关管、第二开关管、第三开关管、第四开关管、第五开关管和第六开关管上分别并联第一二极管、第二二极管、第三二极管、第四二极管、第五二极管和第六二极管。
其中,第五二极管和第六二极管为双向储能变流器的箝位二极管,通过在第五二极管和第六二极管上并联第五开关管和第六开关管,避免了在双向储能 变流器高压充电或高压放电的情况下,第五二极管和第六二极管出现快速发热的问题。
值得说明的是,直流母排选用超低杂散电感的紧凑型叠层母排技术。可以有效的降低分布电感。
电阻组件包括:第一电阻,第一电阻的第一端与第五开关组件的第一端连接,第一电阻的第二端与第六开关组件的第二端连接。
在该技术方案中,电阻组件包括第一电阻。
第一电阻的两端分别与第五开关组件的第一端和第六开关组件的第二端相连接,即第一电阻的两端分别与箝位的两个开关组件相连接。通过将箝位的两个开关组件与第一电阻相连,能够保证双向储能变流器运行过程中,箝位的两个开关组件的电压更加均衡。
电阻组件包括:第二电阻,第二电阻的第一端与第一开关组件的第一端连接;第三电阻,第三电阻的第一端与第二电阻的第二端连接,第三电阻的第二端与第四开关组件的第二端连接。
在该技术方案中,电阻组件包括第二电阻和第三电阻。
第二电阻与第三电阻相串联,第二电阻还与第一开关组件的第一端相连接,第三电阻还与第四开关组件连接。通过将串联的第二电阻和第三电阻设置在双向储能变流器的主回路上,实现了通过第二电阻和第三电阻对主回路上的第一开关组件、第二开关组件、第三开关组件和第四开关组件进行平衡电压的作用,能够保证双向储能变流器运行过程中,主回路上的四个开关组件的电压更加均衡。
在上述任一技术方案中,每一桥臂还包括:第一电容,第一电容的第一端与直流母排的正极连接;第二电容,第二电容的第一端与第一电容的第二端、直流母排的0极连接,第二电容的第二端用于与直流母排的负极连接。
在该技术方案中,在直流母排的正极与0极之间设置有第一电容,在直流母排的负极与0极之间设置有第二电容。通过在直流母排的正极、0极和负极之间设置电容,能够保证直流电压的稳定性。
在上述任一技术方案中,双向储能变流器还包括:散热件,与至少一个 桥臂对应设置。
在该技术方案中,双向储能变流器中还设置有散热件。散热件设置在双向储能变流器的内部,且散热件与双向储能变流器中的桥臂对应设置。通过散热件能够对双向储能变流器的桥臂中的电子元件进行散热。
在一些实施例中,将桥臂与散热件贴合设置。
在这些实施例中,通过将散热件与桥臂设置为相接触的形式,能够提高桥臂上的电子元件与散热件的接触面积,从而提高散热件对桥臂上的电子元件的散热效果。
在另外一些实施例中,桥臂设置在散热件上。
在这些实施例中,通过直接将双向储能变流器的桥臂上的电路结构与散热件相连接,具体而言,将电路结构的电路板与散热件相连接。在提高散热件对电路结构散热效果的前提下,还能够保证散热件与桥臂接触的稳定性。
值得说明的是,散热件可选为板式换热器、散热翅片中的一种或组合。散热件还能够选择风冷或水冷的散热组件。
在上述任一技术方案中,第一开关组件和第五开关组件为第一模块,第四开关组件和第六开关组件为第二模块,第二开关组件和第三开关组件为第三模块;其中,第一模块、第二模块和第三模块为同一型号的模块。
在该技术方案中,将第一开关组件和第五开关组件集成设置为第一模块,将第四开关组件和第六开关组件集成为第二模块,将第二开关组件与第三开关组件集成为第三模块。通过将两个开关组件集成设置为一个模块,能够减少双向储能变流器中的电路结构所占用的控件。由于第一模块、第二模块和第三模块中均设置有两个开关组件,因此能够将第一模块、第二模块和第三模块选为同一型号的模块,实现了降低模块的采购成本,从而降低了双向储能变流器的生产成本。
值得说明的是,第一开关组件、第五开关组件、第六开关组件和第四开关组件均与直流母线相连接,故将靠近的第一开关组件和第五开关组件集成设置为第一模块,并将靠近的第四开关组件和第六开关组件集成设置为第二模块,从而能够减小直流母线与第一模块和第二模块之间的电流路径。第二开关组件和第三开关组件的公共端与交流母线相连接,故将靠近的第二开关组件和第三 开关组件集成设置为第三模块,从而能够减小交流母线与第二模块之间的电流路径。本申请通过对第一开关组件、第二开关组件、第三开关组件、第四开关组件、第五开关组件和第六开关组件两两集成设置,不仅降低了双向储能变流器的生产成本,还能够降低了双向储能变流器的换流路径最小,进一步降低了双向储能变流器中电子器件的温度过高的问题。
在上述任一技术方案中,第一模块与第二模块沿第一方向依次分布,第一模块与第三模块沿第二方向依次分布。
在该技术方案中,将第一模块与第二模块设置为并排分布于散热件上,由于第一模块与第二模块均与直流母排相连接,因此将第一模块和第二模块并排分布于散热件上,能够使第一模块和第二模块与直流母排之间距离较近,并将第三模块设置为与第一模块和第二模块错开分布,能够避免第一模块和第二模块与第三模块之间的线路不会与第一模块和第二模块之间的线路交叉,在保证第一模块、第二模块和第三模块之间电流路径较小的前提下,提高了对第一模块、第二模块和第三模块,以及模块之间线路散热的效果。
值得说明的是,第一模块、第二模块和第三模块之间设置有间隙,进一步提高了第一模块、第二模块和第三模块之间的散热效果。
在上述任一技术方案中,第一开关组件和第二开关组件为第一模块,第三开关组件和第四开关组件为第二模块,第五开关组件和第六开关组件为第三模块;其中,第一模块、第二模块和第三模块为同一型号的模块。
在该技术方案中,将第一开关组件和第二开关组件集成设置为第一模块,将第三开关组件和第四开关组件集成为第二模块,将第五开关组件与第六开关组件集成为第三模块。通过将两个开关组件集成设置为一个模块,能够减少双向储能变流器中的电路结构所占用的控件。由于第一模块、第二模块和第三模块中均设置有两个开关组件,因此能够将第一模块、第二模块和第三模块选为同一型号的模块,实现了降低模块的采购成本,从而降低了双向储能变流器的生产成本。
值得说明的是,第五开关组件和第六开关组件均为双向储能变流器中箝位的开关组件,且第五开关组件和第六开关组件的公共端与直流母排的0极相连接,将第五开关组件和第六开关组件集成为第三模块。第一开关组件和第二开 关组件与直流母排的正极相连接,将第一开关组件和第二开关组件集成为第一模块。第三开关组件和第四开关组件与直流母排的负极相连接。按照上述方式对各个开关组件进行集成,使第一模块、第二模块和第三模块均与直流母排相连接,从而能够保证三个模块之间的线路不重合的基础上,将三个模块之间的间距设置的较小,从而减小了双向储能变流器中桥臂上的电子元件的占用空间。
在上述任一技术方案中,第一模块、第二模块和第三模块沿散热件的延伸方向依次分布。
在该技术方案中,由于第一模块、第二模块和第三模块均与直流母排相连,且第二模块和第三模块与交流母排相连,故能够将第一模块、第二模块和第三模块并排设置。由于散热件用于对第一模块、第二模块和第三模块进行散热,则散热件的尺寸与第一模块、第二模块和第三模块的尺寸相适配,因此,不仅能够减小电子元件的占用空间,还能够减小与电子元件对应的散热件的占用空间。
本申请的附加方面和优点将在下面的描述部分中变得明显,或通过本申请的实践了解到。
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解,其中:
图1示出了根据本申请的一个实施例的双向储能变流器中桥臂的结构示意图之一;
图2示出了根据本申请的一个实施例的双向储能变流器中桥臂的结构示意图之二;
图3示出了根据本申请的一个实施例的双向储能变流器的结构示意图之一;
图4示出了根据本申请的一个实施例的双向储能变流器中桥臂的结构示意图之三;
图5示出了根据本申请的一个实施例的双向储能变流器的结构示意图 之二。
其中,图1至图5中的附图标记与部件名称之间的对应关系为:
100桥臂,110第一开关组件,112第一开关管,114第一二极管,120第二开关组件,122第二开关管,124第二二极管,130第三开关组件,132第三开关管,134第三二极管,140第四开关组件,142第四开关管,144第四二极管,150第五开关组件,152第五开关管,154第五二极管,160第六开关组件,162第六开关管,164第六二极管,170电阻组件,172第一电阻,174第二电阻,176第三电阻,182第一电容,184第二电容,192第一模块,194第二模块,196第三模块,200散热件。
为了能够更清楚地理解本申请的上述目的、特征和优点,下面结合附图和具体实施方式对本申请进行进一步的详细描述。需要说明的是,在不冲突的情况下,本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本申请,但是,本申请还可以采用其他不同于在此描述的其他方式来实施,因此,本申请的保护范围并不受下面公开的具体实施例的限制。
下面参照图1至图5描述根据本申请一些实施例的双向储能变流器。
如图1所示,本实施例的第一方面实施例提供了一种双向储能变流器,包括:至少一个桥臂100,其中,每一桥臂100包括:第一开关组件110、第二开关组件120、第三开关组件130、第四开关组件140、第五开关组件150、第六开关组件160和电阻组件170。
第一开关组件110的第一端与直流母排的正极连接;
第二开关组件120的第一端与第一开关组件110的第二端连接;
第三开关组件130的第一端与第二开关组件120的第二端连接,第三开关组件130的第一端与交流母排连接;
第四开关组件140的第一端与第三开关组件130的第二端连接,第四开关组件140的第二端与直流母排的负极连接;
第五开关组件150的第一端与第二开关组件120的第一端连接,第五 开关组件150的第二端与直流母排的0极连接;
第六开关组件160的第一端与第五开关组件150的第二端连接,第六开关组件160的第二端与第四开关组件140的第一端连接;
电阻组件170的第一端与第五开关组件150的第一端连接,电阻组件170的第二端与第六开关组件160的第二端连接,电阻组件170的第三端与第一开关组件110的第一端连接,电阻组件170的第四端与第四开关组件140的第二端连接。其中,第一开关组件110、第二开关组件120、第三开关组件130、第四开关组件140、第五开关组件150和第六开关组件160中均包括一个开关管和一个二极管。
本申请限定了一种双向储能变流器,双向储能变流器包括至少一个桥臂100,每个桥臂100中包括六个开关组件,其中,每个开关组件中均包括一个开关管和一个二极管,每个开关组件中的开关管与二极管相并联。第一开关组件110的第一端和第四开关组件140的第二端分别连接于直流母排的正极和直流母排的负极,在第一开关组件110与第四开关组件140之间连接有第二开关组件120和第三开关组件130。其中,第二开关组件120的第一端与第一开关组件110的第二端相连接,第三开关组件130的第一端与第二开关组件120的第二端相连接,第三开关组件130的第二端与第四开关组件140的第一端相连接,第二开关组件120和第三开关组件130的公共端与交流母排相连接。在第一开关组件110与第二开关组件120的公共端与第五开关组件150的第一端连接,在第三开关组件130与第四开关组件140的公共端与第六开关组件160的第二端连接,第五开关组件150的第二端与第六开关组件160的第一端相连接,且第五开关组件150和第六开关组件160的公共端与直流母排的0极相连接。
值得说明的是,双向储能变流器中包括多个桥臂100的情况下,多个桥臂100中每个桥臂100中的第五开关组件150和第六开关组件160的公共端均与直流母排的0极相连接,第一开关组件110和第四开关组件140分别与直流母排的正极和负极相连接,第二开关组件120和第三开关组件130的公共端均作为交流连接端与交流母排相连接。
在一些实施例中,双向储能变流器中包括三个桥臂100,三个桥臂100中 的交流连接端均分别与交流母排的A相、B相和C相相连接。
现有技术中,两个箝位二极管,在双向储能变流器在低调制比的工况下运行时,箝位的二极管结温特别高,导致双向储能变流器中半导体温度不均衡。如果需要继续在低调制比的工况下运行,则需要对双向储能变流器降容使用。
本实施例中将双向储能变流器中的两个箝位的二极管替换为第五开关组件150和第六开关组件160,由于第五开关组件150和第六开关组件160中均包括相并联的二极管和开关管,实现了对流经第五开关组件150和第六开关组件160的电流进行分流的作用,使流经第五开关组件150和第六开关组件160的电流值较低,从而避免了相关技术中箝位的二极管结温高的问题。
双向储能变流器中的每个桥臂100中均设置有电阻组件170,电阻组件170包括四个连接端,其中,第一端、第二端、第三端和第四端分别与第五开关组件150、第六开关组件160、第一开关组件110和第四开关组件140相连。电阻组件170能够对箝位的第五开关组件150和第六开关组件160进行电压平衡,使箝位的第五开关组件150和第六开关组件160的电压更加均衡,并且还能够对双向储能变流器的主回路中的第一开关组件110、第二开关组件120、第三开关组件130和第四开关组件140进行电压平衡,使双向储能变流器的主回路上的开关组件之间的电压更加均衡。
在一些实施例中,开关管为可控开关器件,在双向储能变流器进行高压充电或者高压放电的情况下,控制开关管周期性通断。
在这些实施例中,在双向储能变流器进行高电压充电或高电压放电时,由于开关组件中的开关管和二极管相并联,控制开关管开启,对流经开关组件中的二极管进行分流,从而降低流经电阻的电流。通过控制开关管周期性通断,能够对流经二极管的电流进行周期性分流,使二极管有足够的时间进行散热,避免了开关组件中的二极管出现快速升温的问题。
在另外一些实施例中,开关管为可控开关器件,在双向储能变流器进行高压充电或者高压放电的情况下,控制开关管持续保持通路状态。
在这些实施例中,在双向储能变流器进行高电压充电或高电压放电时,由于开关组件中的开关管和二极管相并联,控制开关管开启,对流经开关组件中的二极管进行分流,从而降低流经电阻的电流。通过控制开关管持续保持通路, 能够对流经二极管的电流进行持续分流,避免了开关组件中的二极管出现快速升温的问题。
可以理解的是,第一开关组件110、第二开关组件120、第三开关组件130、第四开关组件140、第五开关组件150和第六开关组件160可设置为相同的硬件结构,简化了双向储能变流器中的结构,降低了双向储能变流器的生产成本。
双向储能变流器能够控制电池的充电和放电过程,进行交直流的变换,在无电网的情况下可以直接为交流负荷供电。
如图1所示,在上述实施例中,第一开关组件110包括:第一开关管112和第一二极管114。
第一开关管112的第一端与直流母排的正极连接;
第一二极管114的正极与第一开关管112的第二端连接,第一二极管114的负极与第一开关管112的第一端连接;
第二开关组件120包括:第二开关管122和第二二极管124。
第二开关管122的第一端与第一开关管112的第二端连接;
第二二极管124的正极与第二开关管122的第二端连接,第二二极管124的负极与第二开关管122的第一端连接;
第三开关组件130包括:第三开关管132和第三二极管134。
第三开关管132的第一端与第二开关管122的第二端连接,第三开关管132的第一端与交流母排相连接;
第三二极管134的正极与第三开关管132的第二端连接,第三二极管134的负极与第三开关管132的第一端连接;
第四开关组件140包括:第四开关管142和第四二极管144。
第四开关管142的第一端与第三开关管132的第二端连接,第四开关管142的第二端与直流母排的负极连接;
第四二极管144的正极与第四开关管142的第二端连接,第四二极管144的负极与第四开关管142的第一端连接;
第五开关组件150包括:第五开关管152和第五二极管154。
第五开关管152的第一端与第二开关管122的第一端连接,第五开关管152的第二端与直流母排的0极连接;
第五二极管154的正极与第五开关管152的第二端连接,第五二极管154的负极与第五开关管152的第一端连接;
第六开关组件160包括:第六开关管162和第六二极管164。
第六开关管162的第一端与第五开关管152的第二端连接,第六开关管162的第二端与第四开关管142的第一端连接;
第六二极管164的正极与第六开关管162的第二端连接,第六二极管164的负极与第六开关管162的第一端连接。
在该实施例中,第一开关组件110、第二开关组件120、第三开关组件130、第四开关组件140、第五开关组件150和第六开关组件160中均设置有二极管和开关管。其中,第一开关管112、第二开关管122、第三开关管132和第四开关管142之间首尾相连,并将第一开关管112的第一端与直流母排的正极相连接,以及将第四开关管142的第二端与直流母排的负极相连接。第五开关管152的第一端连接至第一开关管112的与第二开关管122的公共端,第六开关管162的第二端连接至第三开关管132与第四开关管142的公共端,第五开关管152和第六开关管162的公共端与直流母排的0极相连接,第二开关管122和第三开关管132的公共端与交流母排相连接。在第一开关管112、第二开关管122、第三开关管132、第四开关管142、第五开关管152和第六开关管162上分别并联第一二极管114、第二二极管124、第三二极管134、第四二极管144、第五二极管154和第六二极管164。
其中,第五二极管154和第六二极管164为双向储能变流器的箝位二极管,通过在第五二极管154和第六二极管164上并联第五开关管152和第六开关管162,避免了在双向储能变流器高压充电或高压放电的情况下,第五二极管154和第六二极管164出现快速发热的问题。
值得说明的是,直流母排选用超低杂散电感的紧凑型叠层母排技术。可以有效的降低分布电感。
如图1所示,在上述任一实施例中,电阻组件170还包括:第一电阻172、第二电阻174和第三电阻176。
其中,第一电阻172的第一端与第五开关组件150的第一端连接,第一电阻172的第二端与第六开关组件160的第二端连接;第二电阻174的 第一端与第一开关组件110的第一端连接;第三电阻176的第一端与第二电阻174的第二端连接,第三电阻176的第二端与第四开关组件140的第二端连接。
在该实施例中,电阻组件170包括第一电阻172、第二电阻174和第三电阻176。
第一电阻172的两端分别与第五开关组件150的第一端和第六开关组件160的第二端相连接,即第一电阻172的两端分别与箝位的两个开关组件相连接。通过将箝位的两个开关组件与第一电阻172相连,能够保证双向储能变流器运行过程中,箝位的两个开关组件的电压更加均衡。
第二电阻174与第三电阻176相串联,第二电阻174还与第一开关组件110的第一端相连接,第三电阻176还与第四开关组件140连接。通过将串联的第二电阻174和第三电阻176设置在双向储能变流器的主回路上,实现了通过第二电阻174和第三电阻176对主回路上的第一开关组件110、第二开关组件120、第三开关组件130和第四开关组件140进行平衡电压的作用,能够保证双向储能变流器运行过程中,主回路上的四个开关组件的电压更加均衡。
如图1所示,在上述任一实施例中,每一桥臂100还包括:第一电容182、第二电容184和第三电容。
其中,第一电容182的第一端与直流母排的正极连接,第二电容184的第一端与第一电容182的第二端、直流母排的0极连接,第二电容184的第二端用于与直流母排的负极连接。
在该实施例中,在直流母排的正极与0极之间设置有第一电容182,在直流母排的负极与0极之间设置有第二电容184。通过在直流母排的正极、0极和负极之间设置电容,能够保证直流电压的稳定性。
如图1、图3和图5所示,在上述任一实施例中,双向储能变流器还包括散热件200。散热件200与至少一个桥臂100对应设置。
在该实施例中,双向储能变流器中还设置有散热件200。散热件200设置在双向储能变流器的内部,且散热件200与双向储能变流器中的桥臂100对应设置。通过散热件200能够对双向储能变流器的桥臂100中的电子元件进行散热。
在一些实施例中,将桥臂100与散热件200贴合设置。
在这些实施例中,通过将散热件200与桥臂100设置为相接触的形式,能够提高桥臂100上的电子元件与散热件200的接触面积,从而提高散热件200对桥臂100上的电子元件的散热效果。
在另外一些实施例中,桥臂100设置在散热件200上。
在这些实施例中,通过直接将双向储能变流器的桥臂100上的电路结构与散热件200相连接,具体而言,将电路结构的电路板与散热件200相连接。在提高散热件200对电路结构散热效果的前提下,还能够保证散热件200与桥臂100接触的稳定性。
值得说明的是,散热件200可选为板式换热器、散热翅片中的一种或组合。散热件200还能够选择风冷或水冷的散热组件。
如图1、图2、图3、图4和图5所示,在上述任一实施例中,第一开关组件110和第五开关组件150为第一模块192,第四开关组件140和第六开关组件160为第二模块194,第二开关组件120和第三开关组件130为第三模块196;其中,第一模块192、第二模块194和第三模块196为同一型号的模块。
在该实施例中,将第一开关组件110和第五开关组件150集成设置为第一模块192,将第四开关组件140和第六开关组件160集成为第二模块194,将第二开关组件120与第三开关组件130集成为第三模块196。通过将两个开关组件集成设置为一个模块,能够减少双向储能变流器中的电路结构所占用的控件。由于第一模块192、第二模块194和第三模块196中均设置有两个开关组件,因此能够将第一模块192、第二模块194和第三模块196选为同一型号的模块,实现了降低模块的采购成本,从而降低了双向储能变流器的生产成本。
值得说明的是,第一开关组件110、第五开关组件150、第六开关组件160和第四开关组件140均与直流母线相连接,故将靠近的第一开关组件110和第五开关组件150集成设置为第一模块192,并将靠近的第四开关组件140和第六开关组件160集成设置为第二模块194,从而能够减小直流母线与第一模块192和第二模块194之间的电流路径。第二开关组件120和第三开关组件130的公共端与交流母线相连接,故将靠近的第二开关组件120和第三开关组件 130集成设置为第三模块196,从而能够减小交流母线与第二模块194之间的电流路径。本实施例通过对第一开关组件110、第二开关组件120、第三开关组件130、第四开关组件140、第五开关组件150和第六开关组件160两两集成设置,不仅降低了双向储能变流器的生产成本,还能够降低了双向储能变流器的换流路径最小,进一步降低了双向储能变流器中电子器件的温度过高的问题。
如图1、图2、图3、图4和图5所示,在上述任一实施例中,第一模块192与第二模块194沿第一方向依次分布,第一模块192与第三模块196沿第二方向依次分布。
在该实施例中,将第一模块192与第二模块194设置为并排分布于散热件200上,由于第一模块192与第二模块194均与直流母排相连接,因此将第一模块192和第二模块194并排分布于散热件200上,能够使第一模块192和第二模块194与直流母排之间距离较近,并将第三模块196设置为与第一模块192和第二模块194错开分布,能够避免第一模块192和第二模块194与第三模块196之间的线路不会与第一模块192和第二模块194之间的线路交叉,在保证第一模块192、第二模块194和第三模块196之间电流路径较小的前提下,提高了对第一模块192、第二模块194和第三模块196,以及模块之间线路散热的效果。
值得说明的是,第一模块192、第二模块194和第三模块196之间设置有间隙,进一步提高了第一模块192、第二模块194和第三模块196之间的散热效果。
如图1、图2、图3、图4和图5所示,在上述任一实施例中,第一开关组件110和第二开关组件120为第一模块192,第三开关组件130和第四开关组件140为第二模块194,第五开关组件150和第六开关组件160为第三模块196;其中,第一模块192、第二模块194和第三模块196为同一型号的模块。
在该实施例中,将第一开关组件110和第二开关组件120集成设置为第一模块192,将第三开关组件130和第四开关组件140集成为第二模块194,将第五开关组件150与第六开关组件160集成为第三模块196。通过将两个开关 组件集成设置为一个模块,能够减少双向储能变流器中的电路结构所占用的控件。由于第一模块192、第二模块194和第三模块196中均设置有两个开关组件,因此能够将第一模块192、第二模块194和第三模块196选为同一型号的模块,实现了降低模块的采购成本,从而降低了双向储能变流器的生产成本。
值得说明的是,第五开关组件150和第六开关组件160均为双向储能变流器中箝位的开关组件,且第五开关组件150和第六开关组件160的公共端与直流母排的0极相连接,将第五开关组件150和第六开关组件160集成为第三模块196。第一开关组件110和第二开关组件120与直流母排的正极相连接,将第一开关组件110和第二开关组件120集成为第一模块192。第三开关组件130和第四开关组件140与直流母排的负极相连接。按照上述方式对各个开关组件进行集成,使第一模块192、第二模块194和第三模块196均与直流母排相连接,从而能够保证三个模块之间的线路不重合的基础上,将三个模块之间的间距设置的较小,从而减小了双向储能变流器中桥臂100上的电子元件的占用空间。
如图1、图2、图3、图4和图5所示,在上述任一实施例中,第一模块192、第二模块194和第三模块196沿散热件200的延伸方向依次分布。
在该实施例中,由于第一模块192、第二模块194和第三模块196均与直流母排相连,且第二模块194和第三模块196与交流母排相连,故能够将第一模块192、第二模块194和第三模块196并排设置。由于散热件200用于对第一模块192、第二模块194和第三模块196进行散热,则散热件200的尺寸与第一模块192、第二模块194和第三模块196的尺寸相适配,因此,不仅能够减小电子元件的占用空间,还能够减小与电子元件对应的散热件200的占用空间。
本实施例的描述中,术语“多个”则指两个或两个以上,除非另有明确的限定,术语“上”、“下”等指示的方位或位置关系为基于附图所述的方位或位置关系,仅是为了便于描述本实施例和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本实施例的限制;术语“连接”、“安装”、“固定”等均应做广义理解,例如,“连接”可以是固定连接,也可以是可拆卸连接,或一体地连 接;可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的描述中,术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本申请的至少一个实施例或示例中。在本申请中,对上述术语的示意性表述不一定指的是相同的实施例或实例。而且,描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。
Claims (10)
- 一种双向储能变流器,其中,包括:至少一个桥臂,每一所述桥臂包括:第一开关组件,所述第一开关组件的第一端与直流母排的正极连接;第二开关组件,所述第二开关组件的第一端与所述第一开关组件的第二端连接;第三开关组件,所述第三开关组件的第一端与所述第二开关组件的第二端连接,所述第三开关组件的第一端与交流母排连接;第四开关组件,所述第四开关组件的第一端与所述第三开关组件的第二端连接,所述第四开关组件的第二端与所述直流母排的负极连接;第五开关组件,所述第五开关组件的第一端与所述第二开关组件的第一端连接,所述第五开关组件的第二端与所述直流母排的0极连接;第六开关组件,所述第六开关组件的第一端与所述第五开关组件的第二端连接,所述第六开关组件的第二端与所述第四开关组件的第一端连接;电阻组件,所述电阻组件的第一端与所述第五开关组件的第一端连接,所述电阻组件的第二端与所述第六开关组件的第二端连接,所述电阻组件的第三端与所述第一开关组件的第一端连接,所述电阻组件的第四端与所述第四开关组件连接;其中,所述第一开关组件、所述第二开关组件、所述第三开关组件、所述第四开关组件、所述第五开关组件和所述第六开关组件中均包括一个开关管和一个二极管。
- 根据权利要求1所述的双向储能变流器,其中,所述第一开关组件包括:第一开关管,所述第一开关管的第一端与直流母排的正极连接;第一二极管,所述第一二极管的正极与所述第一开关管的第二端 连接,所述第一二极管的负极与所述第一开关管的第一端连接;所述第二开关组件包括:第二开关管,所述第二开关管的第一端与所述第一开关管的第二端连接;第二二极管,所述第二二极管的正极与所述第二开关管的第二端连接,所述第二二极管的负极与所述第二开关管的第一端连接;所述第三开关组件包括:第三开关管,所述第三开关管的第一端与所述第二开关管的第二端连接,所述第三开关管的第一端与所述交流母排相连接;第三二极管,所述第三二极管的正极与所述第三开关管的第二端连接,所述第三二极管的负极与所述第三开关管的第一端连接;所述第四开关组件包括:第四开关管,所述第四开关管的第一端与所述第三开关管的第二端连接,所述第四开关管的第二端与所述直流母排的负极连接;第四二极管,所述第四二极管的正极与所述第四开关管的第二端连接,所述第四二极管的负极与所述第四开关管的第一端连接;所述第五开关组件包括:第五开关管,所述第五开关管的第一端与所述第二开关管的第一端连接,所述第五开关管的第二端与所述直流母排的0极连接;第五二极管,所述第五二极管的正极与所述第五开关管的第二端连接,所述第五二极管的负极与所述第五开关管的第一端连接;所述第六开关组件包括:第六开关管,所述第六开关管的第一端与所述第五开关管的第二端连接,所述第六开关管的第二端与所述第四开关管的第一端连接;第六二极管,所述第六二极管的正极与所述第六开关管的第二端连接,所述第六二极管的负极与所述第六开关管的第一端连接。
- 根据权利要求1所述的双向储能变流器,其中,所述电阻组件包括:第一电阻,所述第一电阻的第一端与所述第五开关组件的第一端连接, 所述第一电阻的第二端与所述第六开关组件的第二端连接。
- 根据权利要求1所述的双向储能变流器,其中,所述电阻组件包括:第二电阻,所述第二电阻的第一端与所述第一开关组件的第一端连接;第三电阻,所述第三电阻的第一端与所述第二电阻的第二端连接,所述第三电阻的第二端与所述第四开关组件的第二端连接。
- 根据权利要求1所述的双向储能变流器,其中,每一所述桥臂还包括:第一电容,所述第一电容的第一端与所述直流母排的正极连接;第二电容,所述第二电容的第一端与所述第一电容的第二端、所述直流母排的0极连接,所述第二电容的第二端用于与直流母排的负极连接。
- 根据权利要求1至5中任一项所述的双向储能变流器,其中,还包括:散热件,与所述至少一个桥臂对应设置。
- 根据权利要求6所述的双向储能变流器,其中,所述第一开关组件和所述第五开关组件为第一模块,所述第四开关组件和所述第六开关组件为第二模块,所述第二开关组件和所述第三开关组件为第三模块;其中,所述第一模块、所述第二模块和所述第三模块为同一型号的模块。
- 根据权利要求7所述的双向储能变流器,其中,所述第一模块与所述第二模块沿第一方向依次分布,所述第一模块与所述第三模块沿第二方向依次分布。
- 根据权利要求6所述的双向储能变流器,其中,所述第一开关组件和所述第二开关组件为第一模块,所述第三开关组件和所述第四开关组件为第二模块,所述第五开关组件和所述第六开关组件为第三模块;其中,所述第一模块、所述第二模块和所述第三模块为同一型号的模块。
- 根据权利要求9所述的双向储能变流器,其中,所述第一模块、所述第二模块和所述第三模块沿所述散热件的延伸方向依次分布。
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