CN116938031A - Current conversion circuit of high-voltage energy storage current converter, control method, device and medium thereof - Google Patents
Current conversion circuit of high-voltage energy storage current converter, control method, device and medium thereof Download PDFInfo
- Publication number
- CN116938031A CN116938031A CN202311194868.5A CN202311194868A CN116938031A CN 116938031 A CN116938031 A CN 116938031A CN 202311194868 A CN202311194868 A CN 202311194868A CN 116938031 A CN116938031 A CN 116938031A
- Authority
- CN
- China
- Prior art keywords
- gate transistor
- insulated gate
- energy storage
- diode
- voltage energy
- 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.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 179
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 title description 17
- 230000009466 transformation Effects 0.000 claims description 34
- 239000003990 capacitor Substances 0.000 claims description 24
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to the technical field of converter control, and provides a converter circuit of a high-voltage energy storage converter, a control method, a control device and a medium thereof. The current converting circuit of the high-voltage energy storage current transformer comprises: the first end of the first switch component is connected with the positive electrode port; the first end of the second switch assembly is connected with the second end of the first switch assembly, and the second end of the second switch assembly is connected with the second connecting end; the first end of the third switch component is connected with the second connecting end; the first end of the fourth switch component is connected with the second end of the third switch component, and the second end of the fourth switch component is connected with the negative electrode port; the first end of the fifth switch assembly is connected with the second connecting end; and the second end of the sixth switch assembly is connected with the second end of the fifth switch assembly.
Description
Technical Field
The invention relates to the technical field of converter control, in particular to a converter circuit of a high-voltage energy storage converter, and a control method, a control device and a medium thereof.
Background
The energy storage system is a system for storing electric energy through a power supply, and the high-voltage energy storage converter is a core part in the energy storage system and is the only key component with active regulation and control in the system. The high-voltage energy-storage converter provides power electronic equipment with two conversion functions of rectification and inversion of current in the charging and discharging processes of various batteries, is a key component for energy exchange between an energy storage system and the outside, and can help to realize the functions of bidirectional energy transfer between a direct-current battery and an alternating-current power grid of the battery energy storage system. However, the current converter has the problems of low conversion efficiency, small application range and the like.
Disclosure of Invention
The invention aims to at least solve the technical problems of low conversion efficiency, small application range and the like of the current transformer in the prior art or related technologies.
To this end, a first aspect of the invention proposes a converter circuit for a high-voltage energy storage converter.
The second aspect of the invention is to provide a control method of a high-voltage energy storage converter.
A third aspect of the present invention is to provide a control device for a high-voltage energy storage converter.
A fourth aspect of the present invention is to provide a control device for a high-voltage energy storage converter.
A fifth aspect of the present invention is directed to a readable storage medium.
In view of this, according to a first aspect of the present invention, there is provided a current converting circuit of a high voltage energy storage current transformer, comprising: the first connecting end comprises an anode port, a cathode port and a grounding port; the first end of the first switch component is connected with the positive electrode port; the first end of the second switch assembly is connected with the second end of the first switch assembly, and the second end of the second switch assembly is connected with the second connecting end; the first end of the third switch component is connected with the second connecting end; the first end of the fourth switch component is connected with the second end of the third switch component, and the second end of the fourth switch component is connected with the negative electrode port; the first end of the fifth switch assembly is connected with the second connecting end; the first end of the sixth switch component is connected with the grounding port, and the second end of the sixth switch component is connected with the second end of the fifth switch component; 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 comprise an insulated gate transistor and a diode, and the insulated gate transistor and the diode are used for controlling the current flow direction between the first connecting end and the second connecting end.
The current converting circuit of the high-voltage energy storage converter comprises a first switch assembly, a second switch assembly, a third switch assembly, a fourth switch assembly, a fifth switch assembly and a sixth switch assembly, and the current flowing direction between the first connecting end and the second connecting end is adjusted by controlling the on-off state of the switch assemblies, so that the current converting efficiency of the current converting circuit is improved, the application range of the current converting circuit is expanded, and the application scene of the high-voltage energy storage converter is further enriched.
According to a second aspect of the present invention, there is provided a control method of a high-voltage energy storage converter including the converter circuit defined in the first aspect, the control method of the high-voltage energy storage converter including: acquiring a first voltage value and a first current value of the high-voltage energy storage converter, converting the first voltage value into a second voltage value, and converting the first current value into a second current value; acquiring active power and reactive power of the high-voltage energy storage converter, performing data operation on the active power, the reactive power, the second voltage value and the second current value, and generating a pulse signal corresponding to the high-voltage energy storage converter; and controlling the transformation coefficient of the converter circuit according to the pulse signal so as to adjust the output voltage of the high-voltage energy storage converter.
According to the control method of the high-voltage energy storage converter, the first voltage value and the first current value of the high-voltage energy storage converter are obtained, the first voltage value is converted into the second voltage value, the first current value is converted into the second current value, the active power and the reactive power of the high-voltage energy storage converter are obtained, data operation is carried out on the active power, the reactive power, the second voltage value and the second current value to generate a pulse signal, the transformation coefficient of the current transformation circuit is controlled according to the pulse signal, the output voltage of the high-voltage energy storage converter is further adjusted, the current conversion efficiency of the high-voltage energy storage converter is improved, the application range of the high-voltage energy storage converter is expanded, and the application scene of the high-voltage energy storage converter is enriched.
According to a third aspect of the present invention, there is provided a control device for a high-voltage energy storage converter including the converter circuit defined in the first aspect, the control device comprising: the control module is used for acquiring a first voltage value and a first current value of the high-voltage energy storage converter, converting the first voltage value into a second voltage value and converting the first current value into a second current value; the control module is also used for acquiring the active power and the reactive power of the high-voltage energy storage converter, carrying out data operation on the active power, the reactive power, the second voltage value and the second current value, and generating a pulse signal corresponding to the high-voltage energy storage converter; the control module is also used for controlling the transformation coefficient of the converter circuit according to the pulse signal so as to adjust the output voltage of the high-voltage energy storage converter.
According to the control device of the high-voltage energy storage converter, the first voltage value and the first current value of the high-voltage energy storage converter are obtained, the first voltage value is converted into the second voltage value, the first current value is converted into the second current value, the active power and the reactive power of the high-voltage energy storage converter are obtained, data operation is carried out on the active power, the reactive power, the second voltage value and the second current value to generate a pulse signal, the transformation coefficient of the current transformation circuit is controlled according to the pulse signal, the output voltage of the high-voltage energy storage converter is further adjusted, the current conversion efficiency of the high-voltage energy storage converter is improved, the application range of the high-voltage energy storage converter is expanded, and the application scene of the high-voltage energy storage converter is enriched.
According to a fourth aspect of the present invention, there is provided a control device for a high-voltage energy storage converter, comprising a processor and a memory, wherein a program or instructions is stored in the memory, which when executed by the processor, implements the steps of the control method for a high-voltage energy storage converter according to any one of the above-mentioned aspects. Therefore, the control device of the high-voltage energy storage converter has all the beneficial effects of the control method of the high-voltage energy storage converter in any one of the above technical solutions, and will not be described herein.
According to a fifth aspect of the present invention, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement a method of controlling a high voltage energy storage converter according to any of the above-mentioned aspects. Therefore, the readable storage medium has all the advantages of the control method of the high-voltage energy storage converter in any of the above-mentioned technical solutions, and will not be described herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 shows one of the circuit schematic diagrams of a current converting circuit of a high voltage energy storage current transformer in an embodiment of the invention;
FIG. 2 shows a second schematic circuit diagram of a converter circuit of a high voltage energy storage converter in an embodiment of the invention;
figure 3 shows a third schematic circuit diagram of the converter circuit of the high voltage energy storage converter in an embodiment of the invention;
fig. 4 shows one of the flow charts of the control method of the high voltage energy storage converter in the embodiment of the invention;
FIG. 5 is a second flow chart of a control method of the high voltage energy storage converter according to the embodiment of the invention;
fig. 6 shows one of the block diagrams of the control device of the high-voltage energy storage converter in the embodiment of the present invention;
fig. 7 shows a schematic diagram of a control device of a high voltage energy storage converter in an embodiment of the invention;
fig. 8 shows a second block diagram of a control device for a high-voltage energy storage converter in an embodiment of the present invention;
the correspondence between the reference numerals and the component names in fig. 1, 2 and 3 is:
a 100 converter circuit, a 101 first connection, a 102 second connection, a 1011 positive port, a 1012 negative port, a 1013 ground port, a 103 first switch element, a 104 second switch element, a 105 third switch element, a 106 fourth switch element, a 107 fifth switch element, a 108 sixth switch element, a 1031 first insulated gate transistor, a 1041 second insulated gate transistor, a 1051 third insulated gate transistor, a 1061 fourth insulated gate transistor, a 1071 fifth insulated gate transistor, a 1081 sixth insulated gate transistor, a 1032 first diode, a 1042 second diode, a third diode, a 1062 fourth diode, a 1072 fifth diode, a 1082 sixth diode, a 109 seventh diode, a 110 eighth diode, a 111 resistor element, a 112 first capacitor, and a 113 second capacitor.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and the scope of the application is therefore not limited to the specific embodiments disclosed below.
The converter circuit of the high-voltage energy storage converter, the control method, the control device and the medium thereof provided by the embodiment of the application are described in detail below with reference to fig. 1 to 8 through specific embodiments and application scenes thereof.
As shown in fig. 1, in an embodiment of the present application, a current converting circuit 100 of a high voltage energy storage current transformer is provided, including:
a first connection terminal 101 and a second connection terminal 102, the first connection terminal 101 including a positive electrode port 1011, a negative electrode port 1012, and a ground port 1013;
a first switch assembly 103, a first end of the first switch assembly 103 being connected to the positive port 1011;
The second switch assembly 104, the first end of the second switch assembly 104 is connected with the second end of the first switch assembly 103, and the second end of the second switch assembly 104 is connected with the second connection end 102;
a third switch assembly 105, the first end of the third switch assembly 105 being connected to the second connection end 102;
the fourth switch assembly 106, the first end of the fourth switch assembly 106 is connected with the second end of the third switch assembly 105, and the second end of the fourth switch assembly 106 is connected with the negative electrode port 1012;
a fifth switch assembly 107, a first end of the fifth switch assembly 107 being connected to the second connection end 102;
a sixth switching assembly 108, a first end of the sixth switching assembly 108 being connected to the ground port 1013, a second end of the sixth switching assembly 108 being connected to a second end of the fifth switching assembly 107;
the first switch assembly 103, the second switch assembly 104, the third switch assembly 105, the fourth switch assembly 106, the fifth switch assembly 107 and the sixth switch assembly 108 each comprise an insulated gate transistor and a diode for controlling the current flow between the first connection terminal 101 and the second connection terminal 102.
In this embodiment, a current converting circuit 100 of a high voltage energy storage converter is provided, the high voltage energy storage converter being a device for converting current, the current converting circuit 100 being for converting current between an ac power source and a dc power source.
The high-voltage energy storage converter may be embodied as a high-voltage bidirectional energy storage converter, for example.
The current converting circuit 100 includes a first connection terminal 101 and a second connection terminal 102, where the first connection terminal 101 includes a positive electrode port 1011, a negative electrode port 1012, and a ground port 1013, the positive electrode port 1011 is used for connecting a positive electrode of a dc power supply, the negative electrode port 1012 is used for connecting a negative electrode of the dc power supply, and the ground port 1013 is used for grounding.
Illustratively, in the case where the converter circuit 100 converts dc power into ac power, the first connection terminal 101 is an input terminal and the second connection terminal 102 is an output terminal.
Illustratively, in the case where the converter circuit 100 converts ac power to dc power, the first connection terminal 101 is an output terminal and the second connection terminal 102 is an input terminal.
The current converting circuit 100 comprises a first switch assembly 103, a second switch assembly 104, a third switch assembly 105, a fourth switch assembly 106, a fifth switch assembly 107 and a sixth switch assembly 108, which each comprise an insulated gate transistor and a diode for controlling the current flow between the first connection terminal 101 and the second connection terminal 102.
Illustratively, each of the switch assemblies includes an IGBT (Insulated Gate Bipolar Transistor ), and the converter circuit 100 can adjust a transformation ratio between the dc power source and the ac power source by changing a conduction period of the IGBT, so that the high-voltage energy storage converter has a transformation function.
Specifically, a first end of the first switch assembly 103 is connected to the positive electrode port 1011, a first end of the second switch assembly 104 is connected to a second end of the first switch assembly 103, and a second end of the second switch assembly 104 is connected to the second connection terminal 102.
The first end of the third switch assembly 105 is connected to the second connection 102, the first end of the fourth switch assembly 106 is connected to the second end of the third switch assembly 105, and the second end of the fourth switch assembly 106 is connected to the negative port 1012.
The first end of the fifth switching element 107 is connected to the second connection 102, the first end of the sixth switching element 108 is connected to the ground port 1013, and the second end of the sixth switching element 108 is connected to the second end of the fifth switching element 107.
Illustratively, the current converting circuit may adjust the current flow between the first connection terminal 101 and the second connection terminal 102 by controlling the on-off state of the switch assembly.
The current converting circuit 100 of the high-voltage energy storage converter in this embodiment includes a first switch component 103, a second switch component 104, a third switch component 105, a fourth switch component 106, a fifth switch component 107 and a sixth switch component 108, and by controlling the on-off states of the switch components, the current flow direction between the first connection end 101 and the second connection end 102 is adjusted, so that the current converting efficiency of the current converting circuit 100 is improved, and meanwhile, the application range of the current converting circuit 100 is expanded, and further, the application scenario of the high-voltage energy storage converter is enriched.
In some embodiments, optionally, a converter circuit 100 of a high voltage energy storage converter is proposed, the first switch assembly 103 comprising a first insulated gate transistor 1031 and a first diode 1032;
the second switching component 104 includes a second insulated gate transistor 1041 and a second diode 1042;
the collector of the first insulated-gate transistor 1031 is connected to the positive electrode port 1011, the emitter of the first insulated-gate transistor 1031 is connected to the collector of the second insulated-gate transistor 1041, the emitter of the second insulated-gate transistor 1041 is connected to the second connection terminal 102, the first diode 1032 is connected in antiparallel with the first insulated-gate transistor 1031, and the second diode 1042 is connected in antiparallel with the second insulated-gate transistor 1041;
the third switch assembly 105 includes a third insulated gate transistor 1051 and a third diode 1052;
the fourth switch assembly 106 includes a fourth insulated gate transistor 1061 and a fourth diode 1062;
the collector of the third insulated-gate transistor 1051 is connected to the second connection 102, the emitter of the third insulated-gate transistor 1051 is connected to the collector of the fourth insulated-gate transistor 1061, the emitter of the fourth insulated-gate transistor 1061 is connected to the negative port 1012, the third diode 1052 is connected in anti-parallel with the third insulated-gate transistor 1051, and the fourth diode 1062 is connected in anti-parallel with the fourth insulated-gate transistor 1061;
The fifth switching component 107 includes a fifth insulated gate transistor 1071 and a fifth diode 1072;
the sixth switching component 108 includes a sixth insulated gate transistor 1081 and a sixth diode 1082;
the collector of the fifth insulated-gate transistor 1071 is connected to the ground port 1013, the emitter of the fifth insulated-gate transistor 1071 is connected to the collector of the sixth insulated-gate transistor 1081, the emitter of the sixth insulated-gate transistor 1081 is connected to the second connection terminal 102, the fifth diode 1072 is connected in antiparallel with the fifth insulated-gate transistor 1071, and the sixth diode 1082 is connected in antiparallel with the sixth insulated-gate transistor 1081.
In this embodiment, the first switch assembly 103 includes a first insulated gate transistor 1031 and a first diode 1032, and the second switch assembly 104 includes a second insulated gate transistor 1041 and a second diode 1042.
The collector of the first insulated-gate transistor 1031 is connected to the positive electrode port 1011, the emitter of the first insulated-gate transistor 1031 is connected to the collector of the second insulated-gate transistor 1041, the emitter of the second insulated-gate transistor 1041 is connected to the second connection terminal 102, the positive electrode of the first diode 1032 is connected to the emitter of the first insulated-gate transistor 1031, the negative electrode of the first diode 1032 is connected to the collector of the first insulated-gate transistor 1031, the positive electrode of the second diode 1042 is connected to the emitter of the second insulated-gate transistor 1041, and the negative electrode of the second diode 1042 is connected to the collector of the second insulated-gate transistor 1041.
The third switch assembly 105 includes a third insulated gate transistor 1051 and a third diode 1052, and the fourth switch assembly 106 includes a fourth insulated gate transistor 1061 and a fourth diode 1062.
The collector of the third insulated-gate transistor 1051 is connected to the second connection terminal 102, the emitter of the third insulated-gate transistor 1051 is connected to the collector of the fourth insulated-gate transistor 1061, the emitter of the fourth insulated-gate transistor 1061 is connected to the negative electrode port 1012, the anode of the third diode 1052 is connected to the emitter of the third insulated-gate transistor 1051, the negative electrode of the third diode 1052 is connected to the collector of the third insulated-gate transistor 1051, the anode of the fourth diode 1062 is connected to the emitter of the fourth insulated-gate transistor 1061, and the negative electrode of the fourth diode 1062 is connected to the collector of the fourth insulated-gate transistor 1061.
The fifth switching element 107 includes a fifth insulated gate transistor 1071 and a fifth diode 1072, and the sixth switching element 108 includes a sixth insulated gate transistor 1081 and a sixth diode 1082.
The collector of the fifth insulated-gate transistor 1071 is connected to the ground port 1013, the emitter of the fifth insulated-gate transistor 1071 is connected to the collector of the sixth insulated-gate transistor 1081, the emitter of the sixth insulated-gate transistor 1081 is connected to the second connection terminal 102, the anode of the fifth diode 1072 is connected to the emitter of the fifth insulated-gate transistor 1071, the cathode of the fifth diode 1072 is connected to the collector of the fifth insulated-gate transistor 1071, the anode of the sixth diode 1082 is connected to the emitter of the sixth insulated-gate transistor 1081, and the cathode of the sixth diode 1082 is connected to the collector of the sixth insulated-gate transistor 1081.
In the converter circuit 100 of the high-voltage energy storage converter in this embodiment, the first switch assembly 103 includes the first insulated gate transistor 1031 and the first diode 1032, the second switch assembly 104 includes the second insulated gate transistor 1041 and the second diode 1042, the third switch assembly 105 includes the third insulated gate transistor 1051 and the third diode 1052, the fourth switch assembly 106 includes the fourth insulated gate transistor 1061 and the fourth diode 1062, the fifth switch assembly 107 includes the fifth insulated gate transistor 1071 and the fifth diode 1072, the sixth switch assembly 108 includes the sixth insulated gate transistor 1081 and the sixth diode 1082, which enriches the application functions of the converter circuit 100 and expands the application range of the converter circuit 100.
In some embodiments, optionally, a converter circuit 100 of a high-voltage energy storage converter is proposed, where the first insulated-gate transistor 1031 and the second insulated-gate transistor 1041 are in an on state, and where the third insulated-gate transistor 1051, the fourth insulated-gate transistor 1061, the fifth insulated-gate transistor 1071 and the sixth insulated-gate transistor 1081 are in an off state, the positive electrode port 1011 and the second connection terminal 102 are connected through the first insulated-gate transistor 1031 and the second insulated-gate transistor 1041;
With the third insulated-gate transistor 1051 and the fourth insulated-gate transistor 1061 in an on state, and with the first insulated-gate transistor 1031, the second insulated-gate transistor 1041, the fifth insulated-gate transistor 1071, and the sixth insulated-gate transistor 1081 in an off state, the negative port 1012 and the second connection terminal 102 are connected through the third insulated-gate transistor 1051 and the fourth insulated-gate transistor 1061;
with the fifth insulated-gate transistor 1071 in an on state, and with the first, second, third, fourth, and sixth insulated-gate transistors 1031, 1041, 1051, 1061, 1081 in an off state, the second connection terminal 102 and the ground port 1013 are connected through the fifth insulated-gate transistor 1071 and the sixth diode 1082;
with the sixth insulated-gate transistor 1081 in an on state, and with the first insulated-gate transistor 1031, the second insulated-gate transistor 1041, the third insulated-gate transistor 1051, the fourth insulated-gate transistor 1061, and the fifth insulated-gate transistor 1071 in an off state, the ground port 1013 and the second connection 102 are connected through the sixth insulated-gate transistor 1081 and the fifth diode 1072.
In this embodiment, when the first insulated-gate transistor 1031 and the second insulated-gate transistor 1041 are in an on state and the third insulated-gate transistor 1051, the fourth insulated-gate transistor 1061, the fifth insulated-gate transistor 1071, and the sixth insulated-gate transistor 1081 are in an off state, the converter circuit 100 communicates the positive electrode port 1011 and the second connection terminal 102 through the first insulated-gate transistor 1031 and the second insulated-gate transistor 1041.
Illustratively, the current converting circuit 100 may further communicate the second connection 102 and the positive port 1011 through the second diode 1042 and the first diode 1032.
With the third insulated-gate transistor 1051 and the fourth insulated-gate transistor 1061 in an on state, and with the first insulated-gate transistor 1031, the second insulated-gate transistor 1041, the fifth insulated-gate transistor 1071, and the sixth insulated-gate transistor 1081 in an off state, the converter circuit 100 communicates with the second connection terminal 102 and the negative port 1012 through the third insulated-gate transistor 1051 and the fourth insulated-gate transistor 1061.
Illustratively, the converter circuit 100 may also communicate the second connection 102 and the negative port 1012 through a fourth diode 1062 and a third diode 1052.
With the fifth insulated-gate transistor 1071 in an on state and with the first, second, third, fourth and sixth insulated-gate transistors 1031, 1041, 1051, 1061, 1081 in an off state, the converter circuit 100 communicates the second connection 102 with the ground port 1013 via the fifth insulated-gate transistor 1071 and the sixth diode 1082.
With the sixth insulated-gate transistor 1081 in an on state, and with the first insulated-gate transistor 1031, the second insulated-gate transistor 1041, the third insulated-gate transistor 1051, the fourth insulated-gate transistor 1061, and the fifth insulated-gate transistor 1071 in an off state, the current converting circuit 100 connects the ground port 1013 and the second connection 102 through the sixth insulated-gate transistor 1081 and the fifth diode 1072.
The current converting circuit 100 of the high-voltage energy storage converter in this embodiment adjusts the current flow direction between the first connection end 101 and the second connection end 102 by controlling the on-off state of the insulated gate transistor, so as to improve the current conversion efficiency of the current converting circuit 100, expand the application range of the current converting circuit 100, and further enrich the application scenario of the high-voltage energy storage converter.
In some embodiments, optionally, a current transformation circuit 100 of a high voltage energy storage current transformer is provided, where the current transformation circuit 100 further includes:
a seventh diode 109 and an eighth diode 110, the anode of the seventh diode 109 is connected to the ground port 1013, the cathode of the seventh diode 109 is connected to the collector of the second insulated-gate transistor 1041, the anode of the eighth diode 110 is connected to the emitter of the third insulated-gate transistor 1051, and the cathode of the eighth diode 110 is connected to the anode of the seventh diode 109;
With the second insulated-gate transistor 1041 in an on state, and with the first insulated-gate transistor 1031, the third insulated-gate transistor 1051, the fourth insulated-gate transistor 1061, the fifth insulated-gate transistor 1071, and the sixth insulated-gate transistor 1081 in an off state, the ground port 1013 and the second connection terminal 102 are connected through the seventh diode 109 and the second insulated-gate transistor 1041;
when the third insulated-gate transistor 1051 is in an on state and when the first insulated-gate transistor 1031, the second insulated-gate transistor 1041, the fourth insulated-gate transistor 1061, the fifth insulated-gate transistor 1071, and the sixth insulated-gate transistor 1081 are in an off state, the second connection terminal 102 and the ground port 1013 are connected through the third insulated-gate transistor 1051 and the eighth diode 110.
In this embodiment, the current converting circuit 100 further includes a seventh diode 109 and an eighth diode 110, the seventh diode 109 and the eighth diode 110 are used for current limiting, the anode of the seventh diode 109 is connected to the ground port 1013, the cathode of the seventh diode 109 is connected to the collector of the second insulated-gate transistor 1041, the anode of the eighth diode 110 is connected to the emitter of the third insulated-gate transistor 1051, and the cathode of the eighth diode 110 is connected to the anode of the seventh diode 109.
With the second insulated-gate transistor 1041 in an on state and with the first, third, fourth, fifth, and sixth insulated-gate transistors 1031, 1051, 1061, 1071, 1081 in an off state, the current transformer communicates with the ground port 1013 and the second connection 102 through the seventh diode 109 and the second insulated-gate transistor 1041.
With the third insulated-gate transistor 1051 in an on state and with the first, second, fourth, fifth, and sixth insulated-gate transistors 1031, 1041, 1061, 1071, 1081 in an off state, the current transformer communicates the second connection 102 with the ground port 1013 through the third insulated-gate transistor 1051 and the eighth diode 110.
The current converting circuit 100 of the high-voltage energy-storage converter in this embodiment adjusts the current flow direction between the first connection end 101 and the second connection end 102 by controlling the on-off states of the seventh diode 109, the eighth diode 110 and the insulated gate transistor, so as to improve the current conversion efficiency of the current converting circuit 100, expand the application range of the current converting circuit 100, and further enrich the application scenario of the high-voltage energy-storage converter.
In some embodiments, optionally, a current transformation circuit 100 of a high voltage energy storage current transformer is provided, where the current transformation circuit 100 further includes:
the resistor assembly 111, one end of the resistor assembly 111 is connected with the second end of the first switch assembly 103, and the other end of the resistor assembly 111 is connected with the first end of the fourth switch assembly 106;
the first capacitor 112 and the second capacitor 113, one end of the first capacitor 112 is connected to the positive electrode port 1011, the other end of the first capacitor 112 is connected to the ground port 1013, one end of the second capacitor 113 is connected to the negative electrode port 1012, and the other end of the second capacitor 113 is connected to the ground port 1013.
In this embodiment, the current converting circuit 100 further includes a resistor assembly 111, one end of the resistor assembly 111 is connected to the second end of the first switch assembly 103, the other end of the resistor assembly 111 is connected to the first end of the fourth switch assembly 106, and the resistor assembly 111 is used for voltage division.
Illustratively, the resistive component 111 may specifically include a resistive device.
The current converting circuit 100 further includes a first capacitor 112 and a second capacitor 113, one end of the first capacitor 112 is connected to the positive electrode port 1011, the other end of the first capacitor 112 is connected to the ground port 1013, one end of the second capacitor 113 is connected to the negative electrode port 1012, the other end of the second capacitor 113 is connected to the ground port 1013, and the first capacitor 112 and the second capacitor 113 are used for energy storage filtering.
The first capacitance 112 and the second capacitance 113 may be embodied as energy storage capacitances, for example.
Illustratively, as shown in fig. 2, the first switch assembly 103 and the seventh diode 109 may constitute one module, the second switch assembly 104 and the third switch assembly 105 may constitute one module, the fifth switch assembly 107 and the sixth switch assembly 108 may constitute one module, and the fourth switch assembly 106 and the eighth diode 110 may constitute one module.
Illustratively, as shown in fig. 3, the first switch assembly 103 and the second switch assembly 104 may constitute one module, the third switch assembly 105 and the fourth switch assembly 106 may constitute one module, the fifth switch assembly 107 and the sixth switch assembly 108 may constitute one module, and the seventh diode 109 and the eighth diode 110 may constitute one module.
The current transformation circuit 100 of the high-voltage energy storage current transformer in the embodiment further comprises a resistor component 111, a first capacitor 112 and a second capacitor 113, so that the circuit structure of the current transformation circuit 100 is perfected, and the safety of the current transformation circuit 100 is ensured.
The execution main body of the technical scheme of the control method of the high-voltage energy storage converter provided by the invention can be a control device, and can be determined according to actual use requirements, and the implementation main body is not particularly limited. In order to more clearly describe the control method of the high-voltage energy storage converter provided by the invention, the following description uses the control device as an execution main body.
As shown in fig. 4, an embodiment of the present invention provides a control method of a high-voltage energy storage converter, including:
step 402, obtaining a first voltage value and a first current value of a high-voltage energy storage converter, converting the first voltage value into a second voltage value, and converting the first current value into a second current value;
step 404, acquiring active power and reactive power of the high-voltage energy storage converter, and performing data operation on the active power, the reactive power, the second voltage value and the second current value to generate a pulse signal corresponding to the high-voltage energy storage converter;
step 406, according to the pulse signal, controlling the transformation coefficient of the converter circuit to adjust the output voltage of the high-voltage energy-storage converter.
In this embodiment, a control method of a high-voltage energy storage converter is provided, where the high-voltage energy storage converter includes the current converting circuit in the foregoing embodiment, and in an operation process of the high-voltage energy storage converter, the control device obtains a first voltage value and a first current value of the high-voltage energy storage converter, converts the first voltage value into a second voltage value, and converts the first current value into a second current value, where the first voltage value is a voltage value of an ac end of the high-voltage energy storage converter, the first current value is a current value of the ac end of the high-voltage energy storage converter, the second voltage value is a voltage value after conversion of the first voltage value, and the second current value is a current value after conversion of the first current value.
The first voltage value may be, for example, an ac voltage value output by the high-voltage energy storage converter, and the first current value may be, for example, an ac current value output by the high-voltage energy storage converter.
And the control device acquires the active power and the reactive power of the high-voltage energy storage converter, performs data operation on the active power, the reactive power, the second voltage value and the second current value, and determines a pulse signal corresponding to the high-voltage energy storage converter, wherein the active power and the reactive power are the power output by the high-voltage energy storage converter, and the pulse signal is a signal for controlling the duty ratio of a converter circuit.
The pulse signal may be embodied as a pulse width modulated signal, for example.
The control device controls the transformation coefficient of the current transformer circuit according to the pulse signal, and then adjusts the output voltage of the high-voltage energy storage current transformer, wherein the transformation coefficient is a voltage transformation coefficient between the input end and the output end of the current transformer circuit, and the output voltage is a voltage value for adjusting the output of the high-voltage energy storage current transformer.
The control device may reduce the transformation factor of the converter circuit by reducing the duty cycle in the pulse signal, thereby reducing the output voltage of the high-voltage energy storage converter.
The control device may increase the output voltage of the high-voltage energy storage converter by increasing the duty cycle of the pulse signal, for example.
According to the control method of the high-voltage energy storage converter, the first voltage value and the first current value of the high-voltage energy storage converter are obtained, the first voltage value is converted into the second voltage value, the first current value is converted into the second current value, the active power and the reactive power of the high-voltage energy storage converter are obtained, data operation is carried out on the active power, the reactive power, the second voltage value and the second current value to generate a pulse signal, the transformation coefficient of the current transformation circuit is controlled according to the pulse signal, the output voltage of the high-voltage energy storage converter is further adjusted, the current conversion efficiency of the high-voltage energy storage converter is improved, the application range of the high-voltage energy storage converter is expanded, and the application scene of the high-voltage energy storage converter is enriched.
In some embodiments, optionally, as shown in fig. 5, a control method of a high-voltage energy storage converter is provided, including:
step 502, obtaining a first voltage value and a first current value of a high-voltage energy storage converter, converting the first voltage value into a second voltage value, and converting the first current value into a second current value;
Step 504, obtaining active power and reactive power of the high-voltage energy storage converter, and performing data operation on the active power, the reactive power and the second voltage value to obtain a third current value;
step 506, determining a command current value of the high-voltage energy storage converter according to the ratio of the second current value to the third current value;
step 508, converting the command current value into a tri-intersection flow, and generating a pulse signal according to the tri-intersection flow;
step 510, controlling the transformation coefficient of the converter circuit according to the pulse signal to adjust the output voltage of the high-voltage energy-storage converter.
In this embodiment, after the active power and the reactive power are obtained, the control device performs data operation on the active power, the reactive power and the second voltage value to obtain a third current value, where the third current value is a current value calculated according to the active power, the reactive power and the second voltage value.
The control device determines a command current value of the high-voltage energy storage converter according to the proportion of the second current value and the third current value, wherein the command current value is a current value for controlling the high-voltage energy storage converter.
The control device converts the command current value into a three-phase flow, and generates a pulse signal according to the three-phase flow, wherein the three-phase flow is an alternating current with three-phase current.
For example, the control device may convert the direct current component in the command current value into a three-phase alternating current amount and generate the pulse signal using the pulse width modulation signal generator.
According to the control method of the high-voltage energy storage converter, the data operation is carried out on the active power, the reactive power and the second voltage value to obtain a third current value, then the instruction current value of the high-voltage energy storage converter is determined according to the proportion of the second current value and the third current value, the instruction current value is converted into three-phase alternating current quantity, and then a pulse signal is generated according to the three-phase alternating current quantity, so that the signal accuracy of the pulse signal is guaranteed, and the control accuracy of the high-voltage energy storage converter is further guaranteed.
As shown in fig. 6, in an embodiment of the present invention, there is provided a control device 600 for a high-voltage energy storage converter, including:
the control module 602 is configured to obtain a first voltage value and a first current value of the high-voltage energy storage converter, convert the first voltage value into a second voltage value, and convert the first current value into a second current value;
the control module 602 is further configured to obtain active power and reactive power of the high-voltage energy storage converter, perform data operation on the active power, the reactive power, the second voltage value and the second current value, and generate a pulse signal corresponding to the high-voltage energy storage converter;
The control module 602 is further configured to control a transformation coefficient of the current transformation circuit according to the pulse signal, so as to adjust an output voltage of the high-voltage energy storage current transformer.
In this embodiment, a control device 600 of a high-voltage energy storage converter is provided, where the high-voltage energy storage converter includes the current converting circuit in the foregoing embodiment, and during operation of the high-voltage energy storage converter, the control module 602 obtains a first voltage value and a first current value of the high-voltage energy storage converter, converts the first voltage value into a second voltage value, and converts the first current value into a second current value, where the first voltage value is a voltage value of an ac end of the high-voltage energy storage converter, the first current value is a current value of the ac end of the high-voltage energy storage converter, the second voltage value is a voltage value after conversion of the first voltage value, and the second current value is a current value after conversion of the first current value.
The first voltage value may be, for example, an ac voltage value output by the high-voltage energy storage converter, and the first current value may be, for example, an ac current value output by the high-voltage energy storage converter.
The control module 602 obtains the active power and the reactive power of the high-voltage energy storage converter, performs data operation on the active power, the reactive power, the second voltage value and the second current value, and determines a pulse signal corresponding to the high-voltage energy storage converter, wherein the active power and the reactive power are the power output by the high-voltage energy storage converter, and the pulse signal is a signal for controlling the duty ratio of the converter circuit.
The pulse signal may be embodied as a pulse width modulated signal, for example.
The control module 602 controls the transformation coefficient of the current transformer according to the pulse signal, so as to adjust the output voltage of the high-voltage energy storage current transformer, wherein the transformation coefficient is a voltage transformation coefficient between the input end and the output end of the current transformer, and the output voltage is a voltage value for adjusting the output of the high-voltage energy storage current transformer.
The control device may reduce the transformation factor of the converter circuit by reducing the duty cycle in the pulse signal, thereby reducing the output voltage of the high-voltage energy storage converter.
The control device may increase the output voltage of the high-voltage energy storage converter by increasing the duty cycle of the pulse signal, for example.
The control device 600 of the high-voltage energy storage converter in this embodiment converts the first voltage value into the second voltage value and converts the first current value into the second current value by obtaining the first voltage value and the first current value of the high-voltage energy storage converter, then obtains the active power and the reactive power of the high-voltage energy storage converter, performs data operation on the active power, the reactive power, the second voltage value and the second current value to generate a pulse signal, controls the transformation coefficient of the current transformation circuit according to the pulse signal, and further adjusts the output voltage of the high-voltage energy storage converter, thereby improving the current conversion efficiency of the high-voltage energy storage converter, expanding the application range of the high-voltage energy storage converter, and enriching the application scenario of the high-voltage energy storage converter.
In some embodiments, optionally, the control device 600 of the high-voltage energy storage converter further includes:
the control module 602 is further configured to perform data operation on the active power, the reactive power, and the second voltage value to obtain a third current value;
the control module 602 is further configured to determine a command current value of the high-voltage energy storage converter according to a ratio of the second current value to the third current value;
the control module 602 is further configured to convert the command current value into a tri-intersection flow, and generate a pulse signal according to the tri-intersection flow.
In an exemplary embodiment, in the grid-connected mode, the power grid can maintain the stability of the voltage and the frequency, so that after the active power command value and the reactive power command value are received, the power control can be realized only by controlling the output current of the inverter in the high-voltage energy storage converter. It will be appreciated that the active power and reactive power decoupling control is a current source control.
Specifically, the active power and reactive power decoupling control receives an active power command value P and a reactive power command value Q, and calculates a current command by combining the formula (1) and the formula (2) to realize current closed-loop control, that is, active power and reactive power decoupling control in the above, that is, P/Q power decoupling control. Equation (1) is shown below:
；
Equation (2) is shown below:
；
wherein u is d 、u q Is the network side voltage, i.e. the feedback voltage of the network, i * Ld And i * Lq Is the instruction current, u Cd And u Cq The converted voltage is P is an active power command value, and Q is a reactive power command value.
Specifically, as shown in fig. 7, the upper side of the stippled line is a power portion, and is a main loop circuit of the current transformer, including a dc battery, a semiconductor topology circuit, and a filter L. The dashed line portion is the high voltage energy storage converter.
First, the capacitance voltage u is measured by a voltage and current sensor c (i.e., the first voltage value in the present application) and a current i L (i.e., the first current value in the present application), the angle θ (angle value) is converted by the PLL module (Phase Locked Loop, phase-locked loop), the voltage u is converted by abc-dq (alternating current to direct current) c And current i L Conversion u Cdq And i Ldq Wherein u is Cdq Comprising two parts, u Cd And u Cq ，i Ldq Includes i Ld And i Lq Two parts (i.e., a second current value and a third current value in the present application).
Then, according to the formulas (1) and (2), the active power and reactive power command values P, Q and u are known Cdq I can be calculated Ld And i Lq (first command current value and second command current value) by and with the current measurement value i Ld And i Lq The proportional-integral controller of (c) derives a command value for the grid voltage, which is then compared with a feedback value for the grid voltage.
The dc component is then converted to a tri-phase flow by dq-abc (direct current to alternating current) conversion, a pulse signal is generated by a pulse width modulation signal generator, and the semiconductor in the main loop is driven by a driver.
The control device 600 of the high-voltage energy storage converter in this embodiment performs data operation on the active power, the reactive power and the second voltage value to obtain a third current value, determines the instruction current value of the high-voltage energy storage converter according to the proportion of the second current value and the third current value, converts the instruction current value into three-phase alternating current quantity, and generates a pulse signal according to the three-phase alternating current quantity, so that the signal accuracy of the pulse signal is ensured, and the control accuracy of the high-voltage energy storage converter is further ensured.
In some embodiments, optionally, as shown in fig. 8, a control device 800 of a high-voltage energy storage converter is provided, where the control device 800 of the high-voltage energy storage converter includes a processor 802 and a memory 804, and the memory 804 stores a program or an instruction, where the program or the instruction is executed by the processor 802 to implement a step of a control method of the high-voltage energy storage converter in any of the foregoing embodiments. Therefore, the control device 800 for a high-voltage energy storage converter has all the advantages of the control method for a high-voltage energy storage converter according to any of the above-described aspects, and will not be described in detail herein.
In some embodiments, optionally, a readable storage medium is provided, on which a program is stored, which when executed by a processor, implements a method for controlling a high voltage energy storage converter as in any of the embodiments described above, thereby having all the beneficial technical effects of the method for controlling a high voltage energy storage converter as in any of the embodiments described above.
Among them, readable storage media such as Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk, and the like.
It is to be understood that in the claims, specification and drawings of the present invention, the term "plurality" means two or more, and unless otherwise explicitly defined, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and making the description process easier, and not for the purpose of indicating or implying that the apparatus or element in question must have the particular orientation described, be constructed and operated in the particular orientation, so that these descriptions should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly, and may be, for example, a fixed connection between a plurality of objects, a removable connection between a plurality of objects, or an integral connection; the objects may be directly connected to each other or indirectly connected to each other through an intermediate medium. The specific meaning of the terms in the present invention can be understood in detail from the above data by those of ordinary skill in the art.
In the claims, specification, and drawings of the present invention, the descriptions of terms "one embodiment," "some embodiments," "particular embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A converter circuit for a high voltage energy storage converter, comprising:
the first connecting end comprises an anode port, a cathode port and a grounding port;
The first end of the first switch assembly is connected with the positive electrode port;
the first end of the second switch assembly is connected with the second end of the first switch assembly, and the second end of the second switch assembly is connected with the second connecting end;
the first end of the third switch assembly is connected with the second connecting end;
the first end of the fourth switch component is connected with the second end of the third switch component, and the second end of the fourth switch component is connected with the negative electrode port;
the first end of the fifth switch assembly is connected with the second connecting end;
a sixth switch assembly, a first end of which is connected with the ground port, and a second end of which is connected with a second end of the fifth switch assembly;
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 comprise an insulated gate transistor and a diode, and the insulated gate transistor and the diode are used for controlling the current flow direction between the first connecting end and the second connecting end.
2. The current-converting circuit of a high-voltage energy-storing current transformer according to claim 1, wherein,
the first switch assembly comprises a first insulated gate transistor and a first diode;
the second switch assembly includes a second insulated gate transistor and a second diode;
the collector of the first insulated gate transistor is connected with the positive electrode port, the emitter of the first insulated gate transistor is connected with the collector of the second insulated gate transistor, the emitter of the second insulated gate transistor is connected with the second connecting end, the first diode is connected with the first insulated gate transistor in anti-parallel, and the second diode is connected with the second insulated gate transistor in anti-parallel;
the third switch assembly includes a third insulated gate transistor and a third diode;
the fourth switch assembly includes a fourth insulated gate transistor and a fourth diode;
the collector of the third insulated gate transistor is connected with the second connection end, the emitter of the third insulated gate transistor is connected with the collector of the fourth insulated gate transistor, the emitter of the fourth insulated gate transistor is connected with the negative electrode port, the third diode is connected with the third insulated gate transistor in anti-parallel, and the fourth diode is connected with the fourth insulated gate transistor in anti-parallel;
The fifth switch assembly includes a fifth insulated gate transistor and a fifth diode;
the sixth switch assembly includes a sixth insulated gate transistor and a sixth diode;
the collector of the fifth insulated gate transistor is connected with the ground port, the emitter of the fifth insulated gate transistor is connected with the collector of the sixth insulated gate transistor, the emitter of the sixth insulated gate transistor is connected with the second connection end, the fifth diode is connected with the fifth insulated gate transistor in anti-parallel, and the sixth diode is connected with the sixth insulated gate transistor in anti-parallel.
3. The current-converting circuit of a high-voltage energy-storing current transformer according to claim 2, wherein,
the first insulated gate transistor and the second insulated gate transistor are in a conducting state, and the positive electrode port and the second connecting end are communicated through the first insulated gate transistor and the second insulated gate transistor under the condition that the third insulated gate transistor, the fourth insulated gate transistor, the fifth insulated gate transistor and the sixth insulated gate transistor are in a disconnecting state;
the third insulated gate transistor and the fourth insulated gate transistor are in an on state, and the second connection end and the negative electrode port are communicated through the third insulated gate transistor and the fourth insulated gate transistor under the condition that the first insulated gate transistor, the second insulated gate transistor, the fifth insulated gate transistor and the sixth insulated gate transistor are in an off state;
When the fifth insulated gate transistor is in a conducting state and the first insulated gate transistor, the second insulated gate transistor, the third insulated gate transistor, the fourth insulated gate transistor and the sixth insulated gate transistor are in a disconnecting state, the second connection end and the grounding port are communicated through the fifth insulated gate transistor and the sixth diode;
and when the sixth insulated gate transistor is in a conducting state and the first insulated gate transistor, the second insulated gate transistor, the third insulated gate transistor, the fourth insulated gate transistor and the fifth insulated gate transistor are in a disconnecting state, the grounding port and the second connecting end are communicated through the sixth insulated gate transistor and the fifth diode.
4. The current-transforming circuit of a high voltage energy-storage current transformer according to claim 2, further comprising:
a seventh diode and an eighth diode, wherein the anode of the seventh diode is connected with the ground port, the cathode of the seventh diode is connected with the collector of the second insulated gate transistor, the anode of the eighth diode is connected with the emitter of the third insulated gate transistor, and the cathode of the eighth diode is connected with the anode of the seventh diode;
When the second insulated gate transistor is in a conducting state and the first insulated gate transistor, the third insulated gate transistor, the fourth insulated gate transistor, the fifth insulated gate transistor and the sixth insulated gate transistor are in a disconnecting state, the grounding port and the second connecting end are communicated through the seventh diode and the second insulated gate transistor;
and when the third insulated gate transistor is in a conducting state and the first insulated gate transistor, the second insulated gate transistor, the fourth insulated gate transistor, the fifth insulated gate transistor and the sixth insulated gate transistor are in a disconnecting state, the second connection end and the grounding port are communicated through the third insulated gate transistor and the eighth diode.
5. The converter circuit of a high voltage energy storage converter according to any one of claims 1 to 4, further comprising:
one end of the resistor assembly is connected with the second end of the first switch assembly, and the other end of the resistor assembly is connected with the first end of the fourth switch assembly;
The device comprises a first capacitor and a second capacitor, wherein one end of the first capacitor is connected with the positive electrode port, the other end of the first capacitor is connected with the grounding port, one end of the second capacitor is connected with the negative electrode port, and the other end of the second capacitor is connected with the grounding port.
6. A control method of a high-voltage energy storage converter, characterized in that the high-voltage energy storage converter includes a converter circuit according to any one of claims 1 to 5, the control method of the high-voltage energy storage converter comprising:
acquiring a first voltage value and a first current value of the high-voltage energy storage converter, converting the first voltage value into a second voltage value, and converting the first current value into a second current value;
acquiring active power and reactive power of the high-voltage energy storage converter, performing data operation on the active power, the reactive power, the second voltage value and the second current value, and generating a pulse signal corresponding to the high-voltage energy storage converter;
and controlling the transformation coefficient of the converter circuit according to the pulse signal so as to adjust the output voltage of the high-voltage energy storage converter.
7. The method of claim 6, wherein the performing data operations on the active power, the reactive power, the second voltage value, and the second current value to generate the pulse signal corresponding to the high-voltage energy storage converter includes:
Performing data operation on the active power, the reactive power and the second voltage value to obtain a third current value;
determining a command current value of the high-voltage energy storage converter according to the proportion of the second current value and the third current value;
and converting the instruction current value into a tri-intersection flow, and generating the pulse signal according to the tri-intersection flow.
8. A control device for a high-voltage energy storage converter, characterized in that the high-voltage energy storage converter comprises a converter circuit according to any one of claims 1 to 5, the control device comprising:
the control module is used for acquiring a first voltage value and a first current value of the high-voltage energy storage converter, converting the first voltage value into a second voltage value and converting the first current value into a second current value;
the control module is further used for acquiring active power and reactive power of the high-voltage energy storage converter, performing data operation on the active power, the reactive power, the second voltage value and the second current value, and generating a pulse signal corresponding to the high-voltage energy storage converter;
the control module is also used for controlling the transformation coefficient of the current transformation circuit according to the pulse signal so as to adjust the output voltage of the high-voltage energy storage current transformer.
9. A control device for a high voltage energy storage converter, comprising:
a processor;
a memory in which a program or instructions are stored, the processor implementing the steps of the control method of a high voltage energy storage converter according to claim 6 or 7 when executing the program or instructions in the memory.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the control method of a high voltage energy storage converter according to claim 6 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311194868.5A CN116938031A (en) | 2023-09-15 | 2023-09-15 | Current conversion circuit of high-voltage energy storage current converter, control method, device and medium thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311194868.5A CN116938031A (en) | 2023-09-15 | 2023-09-15 | Current conversion circuit of high-voltage energy storage current converter, control method, device and medium thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116938031A true CN116938031A (en) | 2023-10-24 |
Family
ID=88380724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311194868.5A Pending CN116938031A (en) | 2023-09-15 | 2023-09-15 | Current conversion circuit of high-voltage energy storage current converter, control method, device and medium thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116938031A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180076628A1 (en) * | 2012-05-10 | 2018-03-15 | Futurewei Technologies, Inc. | Multilevel Inverter Device and Method |
| CN111697860A (en) * | 2020-06-03 | 2020-09-22 | 浙江万里学院 | Switch control method of multi-level inverter |
| CN114039382A (en) * | 2021-11-25 | 2022-02-11 | 京清数电(北京)技术有限公司 | Energy storage converter, control method and device thereof and readable storage medium |
| CN114499172A (en) * | 2022-01-10 | 2022-05-13 | 三峡大学 | Single-phase non-isolated photovoltaic grid-connected system capable of inhibiting leakage current |
-
2023
- 2023-09-15 CN CN202311194868.5A patent/CN116938031A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180076628A1 (en) * | 2012-05-10 | 2018-03-15 | Futurewei Technologies, Inc. | Multilevel Inverter Device and Method |
| CN111697860A (en) * | 2020-06-03 | 2020-09-22 | 浙江万里学院 | Switch control method of multi-level inverter |
| CN114039382A (en) * | 2021-11-25 | 2022-02-11 | 京清数电(北京)技术有限公司 | Energy storage converter, control method and device thereof and readable storage medium |
| CN114499172A (en) * | 2022-01-10 | 2022-05-13 | 三峡大学 | Single-phase non-isolated photovoltaic grid-connected system capable of inhibiting leakage current |
Non-Patent Citations (1)
| Title |
|---|
| 石祥花 等: "中点箝位型光伏并网逆变器调制策略及效率对比", 《南京航空航天大学学报》, vol. 46, no. 1, pages 66 - 67 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Iyer et al. | Small-signal stability assessment and active stabilization of a bidirectional battery charger | |
| CN109194113B (en) | Power factor corrector with active power decoupling function and control method thereof | |
| Li et al. | Small signal analysis of a dual half bridge isolated ZVS bi-directional DC-DC converter for electrical vehicle applications | |
| CN110838728A (en) | Power distribution network frequency and voltage modulation system and method based on V2G converter | |
| CN114123203A (en) | Direct-current bus voltage ripple suppression strategy during voltage unbalance of alternating-current power grid | |
| CN113037156A (en) | Control method of hybrid excitation generator | |
| CN111525828A (en) | Control method of bidirectional isolation type resonant power converter based on virtual synchronous motor | |
| WO2024045935A1 (en) | Charger control method and apparatus, and charger and vehicle | |
| CN113904570A (en) | Three-phase controllable pulse power supply rectifier topology and rectification method | |
| CN103401416B (en) | A kind of main circuit structure eliminating high boost DC-DC current transformer Right-half-plant zero and determination method for parameter thereof | |
| Yuan et al. | A Linear-Resonant Hybrid Bridge DC–DC Converter | |
| CN116938031A (en) | Current conversion circuit of high-voltage energy storage current converter, control method, device and medium thereof | |
| CN113852116B (en) | Steady state control amount calculating method of new energy grid-connected system | |
| US11557972B2 (en) | Power conversion device | |
| CN114402516B (en) | Apparatus and method for controlling a delta-connected cascaded multilevel converter | |
| CN114944658A (en) | Polymorphic energy storage composite device topology and multi-power flow and voltage support control method thereof | |
| CN114785144A (en) | LLC resonant converter parameter optimization method, PI control method and device | |
| CN201065814Y (en) | Body-building device converting biological energy into AC | |
| WO2022112950A2 (en) | Ev chargers and ev charging | |
| Li et al. | Optimizing control strategy of quasi-Z source indirect matrix converter for induction motor drives | |
| JP3306326B2 (en) | Capacitor power storage device | |
| Musasa et al. | Comparative analyses of DC collection grid based power converter topologies for offshore wind farm | |
| WO2024045936A1 (en) | Charger control method and apparatus, charger, and vehicle | |
| CN114274844B (en) | Heating control method and system for power battery of motor and electric vehicle | |
| CN117674335B (en) | Power supply circuit, power supply control method, storage medium, and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |