Converter circuit of high-voltage energy storage converter and control method and apparatus therefor, and medium

Abstract

The present application relates to the technical field of converter control, and provides a converter circuit of a high-voltage energy storage converter and a control method and apparatus therefor, and a medium. The converter circuit of the high-voltage energy storage converter comprises: a first switch assembly, a first end of the first switch assembly being connected to a positive port; a second switch assembly, a first end of the second switch assembly being connected to a second end of the first switch assembly, and a second end of the second switch assembly being connected to a second connecting end; a third switch assembly, a first end of the third switch assembly being connected to the second connecting end; a fourth switch assembly, a first end of the fourth switch assembly being connected to a second end of the third switch assembly, and a second end of the fourth switch assembly being connected to a negative port; a fifth switch assembly, a first end of the fifth switch assembly being connected to the second connecting end; and a sixth switch assembly, a first end of the sixth switch assembly being connected to a grounding port, and a second end of the sixth switch assembly being connected to a second end of the fifth switch assembly.

Description

Current conversion circuit of high-voltage energy storage converter and control method, device and medium thereof

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on September 15, 2023, with application number "202311194868.5" and application name "Conversion circuit of high-voltage energy storage converter and its control method, device and medium", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of converter control technology, and in particular to a converter circuit of a high-voltage energy storage converter and a control method, device, and medium thereof. Background Art

[0003] Energy storage systems store electrical energy through power sources, and high-voltage energy storage converters are the core of these systems and the only key component capable of active regulation and control. These power electronic devices provide both current rectification and inversion during the charging and discharging of various batteries. They are a key component for energy storage systems to exchange energy with the outside world, enabling bidirectional energy transfer between DC batteries and the AC grid. However, current converters suffer from low conversion efficiency and a limited range of applications.

[0004] Summary of the Invention

[0005] The present application aims to at least solve the technical problems existing in the prior art or related art, such as low converter conversion efficiency and small application scope.

[0006] To this end, a first aspect of the present application is to propose a current conversion circuit for a high-voltage energy storage converter.

[0007] The second aspect of the present application is to propose a control method for a high-voltage energy storage converter.

[0008] The third aspect of the present application is to provide a control device for a high-voltage energy storage converter.

[0009] The fourth aspect of the present application is to provide another control device for a high-voltage energy storage converter.

[0010] A fifth aspect of the present application is to provide a readable storage medium.

[0011] In view of this, according to the first aspect of the present application, a conversion circuit of a high-voltage energy storage converter is proposed, comprising: a first connection end and a second connection end, the first connection end including a positive port, a negative port and a ground port; a first switch component, the first end of the first switch component is connected to the positive port; a second switch component, the first end of the second switch component is connected to the second end of the first switch component, and the second end of the second switch component is connected to the second connection end; a third switch component, the first end of the third switch component is connected to the second connection end; a fourth switch component, the first end of the fourth switch component is connected to the second end of the third switch component, and the second end of the fourth switch component is connected to the negative port; a fifth switch component, the first end of the fifth switch component is connected to the second connection end; a sixth switch component, the first end of the sixth switch component is connected to the ground port, and the second end of the sixth switch component is connected to the second end of the fifth switch component; the first switch component, the second switch component, the third switch component, the fourth switch component, the fifth switch component and the sixth switch component each include an insulated gate transistor and a diode for controlling the current flow between the first connection end and the second connection end.

[0012] The conversion circuit of the high-voltage energy storage converter in this technical solution includes a first switch component, a second switch component, a third switch component, a fourth switch component, a fifth switch component and a sixth switch component. By controlling the on-off state of the above-mentioned switch components, the current flow direction between the first connection end and the second connection end is adjusted, thereby improving the current conversion efficiency of the conversion circuit, and at the same time expanding the application scope of the conversion circuit, thereby enriching the application scenarios of the high-voltage energy storage converter.

[0013] According to the second aspect of the present application, a control method for a high-voltage energy storage converter is proposed. The high-voltage energy storage converter includes the conversion circuit defined in the first aspect above. The control method for the high-voltage energy storage converter includes: obtaining 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; obtaining the active power and reactive power of the high-voltage energy storage converter, performing data operations on the active power, 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 conversion circuit according to the pulse signal to adjust the output voltage of the high-voltage energy storage converter.

[0014] The control method of the high-voltage energy storage converter in the present technical solution 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, converts the first current value into a second current value, and then obtains the active power and reactive power of the high-voltage energy storage converter. The active power, reactive power, second voltage value and second current value are subjected to data calculation to generate a pulse signal. According to the pulse signal, the transformation coefficient of the converter circuit is controlled, and then the output voltage of the high-voltage energy storage converter is adjusted, thereby improving the current conversion efficiency of the high-voltage energy storage converter, and at the same time expanding the application scope of the high-voltage energy storage converter and enriching the application scenarios of the high-voltage energy storage converter.

[0015] According to the third aspect of the present application, a control device for a high-voltage energy storage converter is proposed. The high-voltage energy storage converter includes the conversion circuit defined in the first aspect above. The control device for the high-voltage energy storage converter includes: a control module, used 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 is also used to obtain the active power and reactive power of the high-voltage energy storage converter, perform data operations on the active power, 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 is also used to control the transformation coefficient of the conversion circuit according to the pulse signal to adjust the output voltage of the high-voltage energy storage converter.

[0016] The control device of the high-voltage energy storage converter in the present technical solution 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, converts the first current value into a second current value, and then obtains the active power and reactive power of the high-voltage energy storage converter. The active power, reactive power, second voltage value and second current value are subjected to data calculation to generate a pulse signal. According to the pulse signal, the transformation coefficient of the converter circuit is controlled, and then the output voltage of the high-voltage energy storage converter is adjusted, thereby improving the current conversion efficiency of the high-voltage energy storage converter, and at the same time expanding the application scope of the high-voltage energy storage converter and enriching the application scenarios of the high-voltage energy storage converter.

[0017] According to a fourth aspect of the present application, a control device for a high-voltage energy storage converter is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that, when executed by the processor, implements the steps of the control method for a high-voltage energy storage converter described in any of the above technical solutions. Therefore, the control device for a high-voltage energy storage converter has all the beneficial effects of the control method for a high-voltage energy storage converter described in any of the above technical solutions, and no further details are given here.

[0018] According to a fifth aspect of the present application, a readable storage medium is provided, on which a program or instruction is stored. When executed by a processor, the program or instruction implements the control method for a high-voltage energy storage converter as described in any of the above technical solutions. Therefore, the readable storage medium has all the beneficial effects of the control method for a high-voltage energy storage converter as described in any of the above technical solutions, and no further description is given here.

[0019] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] FIG1 shows one circuit schematic diagram of a converter circuit of a high-voltage energy storage converter in an embodiment of the present application;

[0022] FIG2 shows a second circuit diagram of the converter circuit of the high-voltage energy storage converter in an embodiment of the present application;

[0023] FIG3 shows a third circuit diagram of the converter circuit of the high-voltage energy storage converter in an embodiment of the present application;

[0024] FIG4 shows one of the flow charts of the control method of the high-voltage energy storage converter in the embodiment of the present application;

[0025] FIG5 shows a second flow chart of a control method for a high-voltage energy storage converter in an embodiment of the present application;

[0026] FIG6 shows one of the structural block diagrams of the control device of the high-voltage energy storage converter in the embodiment of the present application;

[0027] FIG7 shows a schematic diagram of a control device for a high-voltage energy storage converter in an embodiment of the present application;

[0028] FIG8 shows a second structural block diagram of the control device of the high-voltage energy storage converter in an embodiment of the present application;

[0029] 1 , 2 and 3 , the correspondence between the reference numerals and the component names is as follows: 100 converter circuit, 101 first connection terminal, 102 second connection terminal, 1011 positive terminal, 1012 negative terminal, 1013 ground terminal, 103 first switch component, 104 second switch component, 105 third switch component, 106 fourth switch component, 107 fifth switch component, 108 sixth switch component, 1031 first insulated gate transistor, 1041 second insulated gate transistor, 1051 third insulated gate transistor, 1061 fourth insulated gate transistor, 1071 fifth insulated gate transistor, 1081 sixth insulated gate transistor, 1032 first diode, 1042 second diode, 1052 third diode, 1062 fourth diode, 1072 fifth diode, 1082 sixth diode, 109 seventh diode, 110 eighth diode, 111 resistor component, 112 first capacitor, 113 second capacitor. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0032] 1 to 8 , the converter circuit of the high-voltage energy storage converter provided in the embodiment of the present application and its control method, device, and medium are described in detail through specific embodiments and their application scenarios.

[0033] As shown in FIG1 , an embodiment of the present application provides a converter circuit 100 of a high-voltage energy storage converter, comprising:

[0034] A first connection terminal 101 and a second connection terminal 102 , wherein the first connection terminal 101 includes a positive terminal 1011 , a negative terminal 1012 , and a ground terminal 1013 ;

[0035] A first switch component 103 , wherein a first end of the first switch component 103 is connected to the positive terminal 1011 ;

[0036] A second switch component 104 , wherein a first end of the second switch component 104 is connected to a second end of the first switch component 103 , and a second end of the second switch component 104 is connected to the second connection end 102 ;

[0037] A third switch component 105, wherein a first end of the third switch component 105 is connected to the second connection end 102;

[0038] a fourth switch assembly 106 , wherein a first end of the fourth switch assembly 106 is connected to a second end of the third switch assembly 105 , and a second end of the fourth switch assembly 106 is connected to the negative electrode port 1012 ;

[0039] a fifth switch component 107 , wherein a first end of the fifth switch component 107 is connected to the second connection end 102 ;

[0040] a sixth switch component 108 , wherein a first end of the sixth switch component 108 is connected to the ground port 1013 , and a second end of the sixth switch component 108 is connected to a second end of the fifth switch component 107 ;

[0041] The first switch component 103 , the second switch component 104 , the third switch component 105 , the fourth switch component 106 , the fifth switch component 107 and the sixth switch component 108 each include an insulated gate transistor and a diode for controlling the current flow between the first connection terminal 101 and the second connection terminal 102 .

[0042] In this embodiment, a current conversion circuit 100 of a high-voltage energy storage converter is provided. The high-voltage energy storage converter is a device for converting current. The current conversion circuit 100 is used to convert current between an AC power supply and a DC power supply.

[0043] Exemplarily, the high-voltage energy storage converter may be specifically a high-voltage bidirectional energy storage converter.

[0044] The converter circuit 100 includes a first connection terminal 101 and a second connection terminal 102. The first connection terminal 101 includes a positive terminal 1011, a negative terminal 1012 and a ground terminal 1013. The positive terminal 1011 is used to connect to the positive electrode of a DC power supply, the negative terminal 1012 is used to connect to the negative electrode of the DC power supply, and the ground terminal 1013 is used for grounding.

[0045] Exemplarily, when the converter circuit 100 converts direct current into alternating current, the first connection terminal 101 is an input terminal, and the second connection terminal 102 is an output terminal.

[0046] Exemplarily, when the converter circuit 100 converts alternating current into direct current, the first connection terminal 101 is an output terminal, and the second connection terminal 102 is an input terminal.

[0047] The current conversion circuit 100 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. Each of the above switch components includes an insulated gate transistor and a diode, which are used to control the current flow between the first connection terminal 101 and the second connection terminal 102.

[0048] Exemplarily, the above-mentioned switching components all include an IGBT (Insulated Gate Bipolar Transistor). The converter circuit 100 can adjust the transformation coefficient between the DC power supply and the AC power supply by changing the conduction time of the IGBT, so that the high-voltage energy storage converter has a transformation function.

[0049] Specifically, the first end of the first switch component 103 is connected to the positive terminal 1011 , the first end of the second switch component 104 is connected to the second end of the first switch component 103 , and the second end of the second switch component 104 is connected to the second connection terminal 102 .

[0050] A first end of the third switch assembly 105 is connected to the second connection end 102 , a first end of the fourth switch assembly 106 is connected to the second end of the third switch assembly 105 , and a second end of the fourth switch assembly 106 is connected to the negative electrode port 1012 .

[0051] A first end of the fifth switch component 107 is connected to the second connection terminal 102 , a first end of the sixth switch component 108 is connected to the ground port 1013 , and a second end of the sixth switch component 108 is connected to the second end of the fifth switch component 107 .

[0052] For example, the current conversion circuit can adjust the current flow direction between the first connection terminal 101 and the second connection terminal 102 by controlling the on-off state of the above-mentioned switch component.

[0053] The converter 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. By controlling the on-off state of the above-mentioned switch components, the current flow direction between the first connection terminal 101 and the second connection terminal 102 is adjusted, thereby improving the current conversion efficiency of the converter circuit 100, and at the same time expanding the application scope of the converter circuit 100, thereby enriching the application scenarios of the high-voltage energy storage converter.

[0054] In some embodiments, optionally, a converter circuit 100 of a high-voltage energy storage converter is provided, wherein the first switch component 103 includes a first insulated gate transistor 1031 and a first diode 1032 ;

[0055] The second switch component 104 includes a second insulated gate transistor 1041 and a second diode 1042;

[0056] The collector of the first insulated gate transistor 1031 is connected to the positive terminal 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 anti-parallel to the first insulated gate transistor 1031, and the second diode 1042 is connected in anti-parallel to the second insulated gate transistor 1041;

[0057] The third switch component 105 includes a third insulated gate transistor 1051 and a third diode 1052;

[0058] The fourth switch component 106 includes a fourth insulated gate transistor 1061 and a fourth diode 1062;

[0059] 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 cathode terminal 1012, the third diode 1052 and the third insulated gate transistor 1051 are connected in anti-parallel, and the fourth diode 1062 and the fourth insulated gate transistor 1061 are connected in anti-parallel;

[0060] The fifth switch component 107 includes a fifth insulated gate transistor 1071 and a fifth diode 1072;

[0061] The sixth switch component 108 includes a sixth insulated gate transistor 1081 and a sixth diode 1082;

[0062] 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 and the fifth insulated gate transistor 1071 are connected in anti-parallel, and the sixth diode 1082 and the sixth insulated gate transistor 1081 are connected in anti-parallel.

[0063] In this embodiment, the first switch component 103 includes a first insulated gate transistor 1031 and a first diode 1032 , and the second switch component 104 includes a second insulated gate transistor 1041 and a second diode 1042 .

[0064] The collector of the first insulated gate transistor 1031 is connected to the positive terminal 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 anode of the first diode 1032 is connected to the emitter of the first insulated gate transistor 1031, the cathode of the first diode 1032 is connected to the collector of the first insulated gate transistor 1031, the anode of the second diode 1042 is connected to the emitter of the second insulated gate transistor 1041, and the cathode of the second diode 1042 is connected to the collector of the second insulated gate transistor 1041.

[0065] The third switch component 105 includes a third insulated gate transistor 1051 and a third diode 1052 , and the fourth switch component 106 includes a fourth insulated gate transistor 1061 and a fourth diode 1062 .

[0066] 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 terminal 1012, the anode of the third diode 1052 is connected to the emitter of the third insulated gate transistor 1051, the cathode 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 cathode of the fourth diode 1062 is connected to the collector of the fourth insulated gate transistor 1061.

[0067] The fifth switch component 107 includes a fifth insulated gate transistor 1071 and a fifth diode 1072 , and the sixth switch component 108 includes a sixth insulated gate transistor 1081 and a sixth diode 1082 .

[0068] 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.

[0069] In the converter circuit 100 of the high-voltage energy storage converter in this embodiment, the first switch component 103 includes a first insulated gate transistor 1031 and a first diode 1032, the second switch component 104 includes a second insulated gate transistor 1041 and a second diode 1042, the third switch component 105 includes a third insulated gate transistor 1051 and a third diode 1052, the fourth switch component 106 includes a fourth insulated gate transistor 1061 and a fourth diode 1062, the fifth switch component 107 includes a fifth insulated gate transistor 1071 and a fifth diode 1072, and the sixth switch component 108 includes a sixth insulated gate transistor 1081 and a sixth diode 1082, thereby enriching the application functions of the converter circuit 100 and expanding the application scope of the converter circuit 100.

[0070] In some embodiments, optionally, a conversion circuit 100 of a high-voltage energy storage converter is provided, wherein when the first insulated gate transistor 1031 and the second insulated gate transistor 1041 are in an on state, and when 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 via the first insulated gate transistor 1031 and the second insulated gate transistor 1041;

[0071] When the third insulated gate transistor 1051 and the fourth insulated gate transistor 1061 are in the on state, and 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 are in the off state, the cathode port 1012 and the second connection terminal 102 are connected via the third insulated gate transistor 1051 and the fourth insulated gate transistor 1061;

[0072] When the fifth insulated gate transistor 1071 is in the on state and 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 sixth insulated gate transistor 1081 are in the off state, the second connection terminal 102 and the ground terminal 1013 are connected via the fifth insulated gate transistor 1071 and the sixth diode 1082;

[0073] When the sixth insulated gate transistor 1081 is in the on state and 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 are in the off state, the ground port 1013 and the second connection terminal 102 are connected through the sixth insulated gate transistor 1081 and the fifth diode 1072.

[0074] In this embodiment, when the first insulated gate transistor 1031 and the second insulated gate transistor 1041 are in the 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 the off state, the converter circuit 100 is connected to the positive terminal 1011 and the second connection terminal 102 through the first insulated gate transistor 1031 and the second insulated gate transistor 1041.

[0075] Exemplarily, the current conversion circuit 100 may further connect the second connection end 102 and the positive electrode port 1011 via the second diode 1042 and the first diode 1032 .

[0076] When the third insulated gate transistor 1051 and the fourth insulated gate transistor 1061 are in the on state and 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 are in the off state, the converter circuit 100 is connected to the second connection terminal 102 and the negative electrode port 1012 through the third insulated gate transistor 1051 and the fourth insulated gate transistor 1061.

[0077] Exemplarily, the current conversion circuit 100 may further connect the second connection end 102 and the negative electrode port 1012 via the fourth diode 1062 and the third diode 1052 .

[0078] When the fifth insulated gate transistor 1071 is in the on state and 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 sixth insulated gate transistor 1081 are in the off state, the converter circuit 100 connects the second connection terminal 102 and the ground port 1013 through the fifth insulated gate transistor 1071 and the sixth diode 1082.

[0079] When the sixth insulated gate transistor 1081 is in the on state and 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 are in the off state, the converter circuit 100 is connected to the ground port 1013 and the second connection terminal 102 through the sixth insulated gate transistor 1081 and the fifth diode 1072.

[0080] The converter circuit 100 of the high-voltage energy storage converter in this embodiment controls the on-off state of the above-mentioned insulated gate transistor to adjust the current flow between the first connection terminal 101 and the second connection terminal 102, thereby improving the current conversion efficiency of the converter circuit 100, expanding the application scope of the converter circuit 100, and enriching the application scenarios of the high-voltage energy storage converter.

[0081] In some embodiments, optionally, a high-voltage energy storage converter circuit 100 is provided. The converter circuit 100 further includes:

[0082] a seventh diode 109 and an eighth diode 110, wherein the anode of the seventh diode 109 is connected to the ground terminal 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;

[0083] When the second insulated gate transistor 1041 is in the on state and 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 are in the off state, the ground terminal 1013 and the second connection terminal 102 are connected via the seventh diode 109 and the second insulated gate transistor 1041;

[0084] When the third insulated gate transistor 1051 is in the on state and 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 the 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.

[0085] In this embodiment, the current conversion circuit 100 also includes a seventh diode 109 and an eighth diode 110, which 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.

[0086] When the second insulated gate transistor 1041 is in the on state and 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 are in the off state, the converter is connected to the ground port 1013 and the second connection terminal 102 through the seventh diode 109 and the second insulated gate transistor 1041.

[0087] When the third insulated gate transistor 1051 is in the on state and 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 the off state, the converter connects the second connection terminal 102 and the ground port 1013 through the third insulated gate transistor 1051 and the eighth diode 110.

[0088] The converter circuit 100 of the high-voltage energy storage converter in this embodiment adjusts the current flow direction between the first connection terminal 101 and the second connection terminal 102 by controlling the on-off state of the seventh diode 109, the eighth diode 110 and the above-mentioned insulated gate transistor, thereby improving the current conversion efficiency of the converter circuit 100, expanding the application scope of the converter circuit 100, and enriching the application scenarios of the high-voltage energy storage converter.

[0089] In some embodiments, optionally, a high-voltage energy storage converter circuit 100 is provided. The converter circuit 100 further includes:

[0090] a resistor component 111, wherein one end of the resistor component 111 is connected to the second end of the first switch component 103, and the other end of the resistor component 111 is connected to the first end of the fourth switch component 106;

[0091] A first capacitor 112 and a second capacitor 113, one end of the first capacitor 112 is connected to the positive 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 port 1012, and the other end of the second capacitor 113 is connected to the ground port 1013.

[0092] In this embodiment, the converter circuit 100 further includes a resistor component 111 , one end of the resistor component 111 is connected to the second end of the first switch component 103 , and the other end of the resistor component 111 is connected to the first end of the fourth switch component 106 . The resistor component 111 is used for voltage division.

[0093] Exemplarily, the resistance component 111 may specifically include a resistance device.

[0094] The converter circuit 100 also includes a first capacitor 112 and a second capacitor 113. One end of the first capacitor 112 is connected to the positive terminal 1011, and the other end of the first capacitor 112 is connected to the ground terminal 1013. One end of the second capacitor 113 is connected to the negative terminal 1012, and the other end of the second capacitor 113 is connected to the ground terminal 1013. The first capacitor 112 and the second capacitor 113 are used for energy storage filtering.

[0095] Exemplarily, the first capacitor 112 and the second capacitor 113 may be energy storage capacitors.

[0096] For example, as shown in Figure 2, the first switch component 103 and the seventh diode 109 can form a module, the second switch component 104 and the third switch component 105 can form a module, the fifth switch component 107 and the sixth switch component 108 can form a module, and the fourth switch component 106 and the eighth diode 110 can form a module.

[0097] For example, as shown in FIG3 , the first switch component 103 and the second switch component 104 may form a module, the third switch component 105 and the fourth switch component 106 may form a module, the fifth switch component 107 and the sixth switch component 108 may form a module, and the seventh diode 109 and the eighth diode 110 may form a module.

[0098] The converter circuit 100 of the high-voltage energy storage converter in this embodiment further includes a resistor component 111 , a first capacitor 112 , and a second capacitor 113 , which improves the circuit structure of the converter circuit 100 and ensures the safety of the converter circuit 100 .

[0099] The technical solution for the control method of the high-voltage energy storage converter provided in this application can be implemented by a control device, which can also be determined based on actual usage requirements and is not specifically limited here. To more clearly describe the control method of the high-voltage energy storage converter provided in this application, the following description uses the control device as the implementation entity.

[0100] As shown in FIG4 , an embodiment of the present application provides a control method for a high-voltage energy storage converter, including:

[0101] Step 402: Acquire a first voltage value and a first current value of a 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;

[0102] Step 404: acquiring active power and reactive power of the high-voltage energy storage converter, performing data calculation on the active power, reactive power, the second voltage value, and the second current value, and generating a pulse signal corresponding to the high-voltage energy storage converter;

[0103] Step 406 : Control the transformation coefficient of the converter circuit according to the pulse signal to adjust the output voltage of the high-voltage energy storage converter.

[0104] In this embodiment, a control method for a high-voltage energy storage converter is provided. The high-voltage energy storage converter includes the converter circuit in the above embodiment. During the operation 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, wherein the first voltage value is the voltage value of the AC end of the high-voltage energy storage converter, the first current value is the current value of the AC end of the high-voltage energy storage converter, the second voltage value is the voltage value after the first voltage value is converted, and the second current value is the current value after the first current value is converted.

[0105] For example, the first voltage value may be specifically an AC voltage value output by the high-voltage energy storage converter, and the first current value may be specifically an AC current value output by the high-voltage energy storage converter.

[0106] The control device then obtains the active power and reactive power of the high-voltage energy storage converter, performs data calculations on the active power, reactive power, second voltage value, and second current value, and determines a pulse signal corresponding to the high-voltage energy storage converter, wherein the active power and reactive power are the powers output by the high-voltage energy storage converter, and the pulse signal is a signal for controlling the duty cycle of the converter circuit.

[0107] Exemplarily, the pulse signal may be a pulse width modulation signal.

[0108] The control device controls the transformation coefficient of the converter circuit according to the pulse signal, thereby adjusting the output voltage of the high-voltage energy storage converter. The transformation coefficient is the voltage conversion coefficient between the input and output ends of the converter circuit, and the output voltage is the voltage value adjusted to the output of the high-voltage energy storage converter.

[0109] For example, the control device may reduce the duty cycle in the pulse signal to reduce the transformation coefficient of the converter circuit, thereby reducing the output voltage of the high-voltage energy storage converter.

[0110] For example, the control device may increase the duty cycle in the pulse signal to increase the transformation coefficient of the converter circuit, thereby increasing the output voltage of the high-voltage energy storage converter.

[0111] The control method of the high-voltage energy storage converter in this embodiment 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, converts the first current value into a second current value, and then obtains the active power and reactive power of the high-voltage energy storage converter. The active power, reactive power, second voltage value and second current value are subjected to data calculation to generate a pulse signal. According to the pulse signal, the transformation coefficient of the converter circuit is controlled, and then the output voltage of the high-voltage energy storage converter is adjusted, thereby improving the current conversion efficiency of the high-voltage energy storage converter, and at the same time expanding the application scope of the high-voltage energy storage converter and enriching the application scenarios of the high-voltage energy storage converter.

[0112] In some embodiments, optionally, as shown in FIG5 , a control method for a high-voltage energy storage converter is proposed, including:

[0113] Step 502: Acquire a first voltage value and a first current value of a 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;

[0114] Step 504: acquiring active power and reactive power of the high-voltage energy storage converter, and performing a data operation on the active power, reactive power, and the second voltage value to obtain a third current value;

[0115] Step 506, determining 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;

[0116] Step 508: Convert the command current value into a three-phase alternating current quantity, and generate a pulse signal according to the three-phase alternating current quantity;

[0117] Step 510: Control the transformation coefficient of the converter circuit according to the pulse signal to adjust the output voltage of the high-voltage energy storage converter.

[0118] In this embodiment, after obtaining the active power and reactive power, the control device performs data calculation on the active power, reactive power and the second voltage value to obtain a third current value, wherein the third current value is the current value calculated based on the active power, reactive power and the second voltage value.

[0119] The control device determines 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, wherein the command current value is a current value for controlling the high-voltage energy storage converter.

[0120] The control device converts the command current value into a three-phase alternating current quantity and generates a pulse signal according to the three-phase alternating current quantity, wherein the three-phase alternating current quantity is an alternating current quantity having three-phase current.

[0121] Exemplarily, the control device may convert a DC component in the command current value into a three-phase AC quantity, and generate a pulse signal using a pulse width modulation signal generator.

[0122] The control method of the high-voltage energy storage converter in this embodiment performs data calculation on the active power, reactive power and the second voltage value to obtain a third current value, and then determines the command current value of the high-voltage energy storage converter based on the ratio of the second current value to the third current value, converts the command current value into a three-phase alternating current quantity, and then generates a pulse signal based on the three-phase alternating current quantity, thereby ensuring the signal accuracy of the pulse signal and thus ensuring the control accuracy of the high-voltage energy storage converter.

[0123] As shown in FIG6 , an embodiment of the present application provides a control device 600 for a high-voltage energy storage converter, including:

[0124] A 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;

[0125] The control module 602 is further configured to obtain the active power and reactive power of the high-voltage energy storage converter, perform data calculation on the active power, reactive power, the second voltage value, and the second current value, and generate a pulse signal corresponding to the high-voltage energy storage converter;

[0126] The control module 602 is further configured to control 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.

[0127] In this embodiment, a control device 600 for a high-voltage energy storage converter is provided. The high-voltage energy storage converter includes the converter circuit in the above embodiment. During the 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, wherein the first voltage value is the voltage value of the AC end of the high-voltage energy storage converter, the first current value is the current value of the AC end of the high-voltage energy storage converter, the second voltage value is the voltage value after the first voltage value is converted, and the second current value is the current value after the first current value is converted.

[0128] For example, the first voltage value may be specifically an AC voltage value output by the high-voltage energy storage converter, and the first current value may be specifically an AC current value output by the high-voltage energy storage converter.

[0129] The control module 602 then obtains the active power and reactive power of the high-voltage energy storage converter, performs data calculations on the active power, reactive power, the second voltage value, and the second current value, and determines the pulse signal corresponding to the high-voltage energy storage converter, wherein the active power and reactive power are the powers output by the high-voltage energy storage converter, and the pulse signal is a signal used to control the duty cycle of the conversion circuit.

[0130] Exemplarily, the pulse signal may be a pulse width modulation signal.

[0131] The control module 602 controls the transformation coefficient of the converter circuit according to the pulse signal, thereby adjusting the output voltage of the high-voltage energy storage converter. The transformation coefficient is the voltage conversion coefficient between the input and output ends of the converter circuit, and the output voltage is the voltage value adjusted to the output of the high-voltage energy storage converter.

[0132] For example, the control device may reduce the duty cycle in the pulse signal to reduce the transformation coefficient of the converter circuit, thereby reducing the output voltage of the high-voltage energy storage converter.

[0133] For example, the control device may increase the duty cycle in the pulse signal to increase the transformation coefficient of the converter circuit, thereby increasing the output voltage of the high-voltage energy storage converter.

[0134] The control device 600 of the high-voltage energy storage converter in this embodiment obtains the first voltage value and the first current value of the high-voltage energy storage converter, converts the first voltage value into the second voltage value, converts the first current value into the second current value, and then obtains the active power and reactive power of the high-voltage energy storage converter. It performs data calculation on the active power, reactive power, the second voltage value and the second current value to generate a pulse signal. According to the pulse signal, it controls the transformation coefficient of the converter circuit, and then adjusts the output voltage of the high-voltage energy storage converter, thereby improving the current conversion efficiency of the high-voltage energy storage converter, and at the same time expanding the application scope of the high-voltage energy storage converter and enriching the application scenarios of the high-voltage energy storage converter.

[0135] In some embodiments, optionally, the control device 600 of the high-voltage energy storage converter further includes:

[0136] The control module 602 is further configured to perform data calculation on the active power, the reactive power and the second voltage value to obtain a third current value;

[0137] 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;

[0138] The control module 602 is further configured to convert the command current value into a three-phase alternating current quantity and generate a pulse signal according to the three-phase alternating current quantity.

[0139] For example, in grid-connected mode, the power grid can maintain stable voltage and frequency. Therefore, after receiving the active power command value and reactive power command value, power control can be achieved by simply controlling the output current of the inverter in the high-voltage energy storage converter. It can be understood that decoupling control of active power and reactive power is a type of current source control.

[0140] Specifically, the active power and reactive power decoupling control receives the active power command value P* and the reactive power command value Q*, and calculates the current command using formulas (1) and (2) to achieve current closed-loop control, which is the active power and reactive power decoupling control mentioned above, or P / Q power decoupling control. Formula (1) is as follows:

[0141] Formula (2) is as follows:

[0142] Among them, u d 、u q is the grid-side voltage, i.e. the grid feedback voltage, i * Ld and i * Lq is the command current, u Cd and u Cq is the converted voltage, P* is the active power command value, and Q* is the reactive power command value.

[0143] Specifically, as shown in FIG7 , the upper side of the dotted line is the power part, which is the main loop circuit of the converter, including a DC battery, a semiconductor topology circuit, and a filter L. The dotted line part is the high-voltage energy storage converter.

[0144] First, the capacitor voltage u is measured by the voltage and current sensors c (ie the first voltage value in this application) and the current i L (i.e. the first current value in this application), is converted into an angle θ (angle value) by the PLL module (Phase Locked Loop), and the voltage u is converted by abc-dq (AC to DC) c and current i L Convert u Cdq and i Ldq , where u Cdq It consists of two parts, namely u Cd and u Cq ,i Ldq Including i Ld and i Lq Two parts (ie, the second current value and the third current value in this application).

[0145] Then according to the above formulas (1) and (2), the active power and reactive power command values ​​P*, Q* and u Cdq You can calculate i* Ld and i* Lq (the first command current value and the second command current value), by comparing with the current measurement value i Ld and i Lq The proportional-integral controller obtains the grid voltage command value, which is then compared with the grid voltage feedback value.

[0146] The DC component is then converted into a three-phase AC quantity through dq-abc (DC to AC) conversion, and a pulse width modulation signal generator is used to generate a pulse signal, which is then used to drive the semiconductor in the main circuit through the driver.

[0147] The control device 600 of the high-voltage energy storage converter in this embodiment performs data calculations on the active power, reactive power and the second voltage value to obtain a third current value, and then determines the command current value of the high-voltage energy storage converter based on the ratio of the second current value to the third current value, converts the command current value into a three-phase alternating current quantity, and then generates a pulse signal based on the three-phase alternating current quantity, thereby ensuring the signal accuracy of the pulse signal and thus ensuring the control accuracy of the high-voltage energy storage converter.

[0148] In some embodiments, optionally, as shown in FIG8 , a control device 800 for a high-voltage energy storage converter is proposed. The control device 800 for a high-voltage energy storage converter includes a processor 802 and a memory 804. The memory 804 stores a program or instruction. When the program or instruction is executed by the processor 802, the steps of the control method for a high-voltage energy storage converter in any of the above technical solutions are implemented. Therefore, the control device 800 for a high-voltage energy storage converter has all the beneficial effects of the control method for a high-voltage energy storage converter in any of the above technical solutions, and will not be repeated here.

[0149] In some embodiments, optionally, a readable storage medium is provided on which a program is stored. When the program is executed by a processor, the control method of the high-voltage energy storage converter in any of the above embodiments is implemented, thereby having all the beneficial technical effects of the control method of the high-voltage energy storage converter in any of the above embodiments.

[0150] The readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0151] It should be clarified that in the claims, specification and drawings of this application, the term "plurality" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of more conveniently describing this application and making the description process simpler, and is not intended to indicate or imply that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions cannot be understood as limitations on this application. The terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0152] In the claims, specification, and drawings of this application, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In the claims, specification, and drawings of this application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0153] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A current conversion circuit of a high-voltage energy storage converter, wherein: include: a first connection end and a second connection end, wherein the first connection end includes a positive electrode port, a negative electrode port and a grounding port; a first switch component, wherein a first end of the first switch component is connected to the positive electrode port; a second switch component, wherein a first end of the second switch component is connected to a second end of the first switch component, and a second end of the second switch component is connected to the second connection end; a third switch component, wherein a first end of the third switch component is connected to the second connection end; a fourth switch component, wherein a first end of the fourth switch component is connected to a second end of the third switch component, and a second end of the fourth switch component is connected to the negative electrode port; a fifth switch component, wherein a first end of the fifth switch component is connected to the second connection end; a sixth switch component, wherein a first end of the sixth switch component is connected to the ground port, and a second end of the sixth switch component is connected to the second end of the fifth switch component; The first switch component, the second switch component, the third switch component, the fourth switch component, the fifth switch component and the sixth switch component each include an insulated gate transistor and a diode for controlling the current flow between the first connection end and the second connection end.

2. The converter circuit of the high-voltage energy storage converter according to claim 1, wherein: The first switch assembly includes 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 to the positive terminal, the emitter of the first insulated gate transistor is connected to the collector of the second insulated gate transistor, the emitter of the second insulated gate transistor is connected to the second connection terminal, the first diode is connected to the first insulated gate transistor in anti-parallel, and the second diode is connected to 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 to the second connection terminal, the emitter of the third insulated gate transistor is connected to the collector of the fourth insulated gate transistor, the emitter of the fourth insulated gate transistor is connected to the cathode terminal, the third diode and the third insulated gate transistor are connected to each other. connected in parallel, the fourth diode and the fourth insulated gate transistor being connected 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 to the ground port, the emitter of the fifth insulated gate transistor is connected to the collector of the sixth insulated gate transistor, the emitter of the sixth insulated gate transistor is connected to the second connection terminal, the fifth diode and the fifth insulated gate transistor are connected in anti-parallel, and the sixth diode and the sixth insulated gate transistor are connected in anti-parallel.

3. The converter circuit of the high-voltage energy storage converter according to claim 2, wherein: When the first insulated gate transistor and the second insulated gate transistor are in an on state, and the third insulated gate transistor, the fourth insulated gate transistor, the fifth insulated gate transistor, and the sixth insulated gate transistor are in an off state, the positive electrode port and the second connection terminal are connected through the first insulated gate transistor and the second insulated gate transistor; When the third insulated gate transistor and the fourth insulated gate transistor are in an on state, and when 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, the second connection terminal and the negative electrode port are connected through the third insulated gate transistor and the fourth insulated gate transistor; When the fifth insulated gate transistor is in the on state, and when 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 the off state, the second connection terminal and the ground port are connected through the fifth insulated gate transistor and the sixth diode; When the sixth insulated gate transistor is in the on state and when 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 the off state, the ground port and the second connection terminal are connected through the sixth insulated gate transistor and the fifth diode.

4. The converter circuit of the high-voltage energy storage converter according to claim 2, wherein: The current conversion circuit of the high-voltage energy storage converter also includes: a seventh diode and an eighth diode, wherein the anode of the seventh diode is connected to the ground port, the cathode of the seventh diode is connected to the collector of the second insulated gate transistor, the anode of the eighth diode is connected to the emitter of the third insulated gate transistor, the cathode of the eighth diode is connected to the collector of the second insulated gate transistor, The anode of the seventh diode is connected; When the second insulated gate transistor is in the on state, and when 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 the off state, the ground port and the second connection terminal are connected through the seventh diode and the second insulated gate transistor; When the third insulated gate transistor is in the on state and when 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 the off state, the second connection terminal and the ground port are connected through the third insulated gate transistor and the eighth diode.

5. The converter circuit of the high-voltage energy storage converter according to any one of claims 1 to 4, wherein: The current conversion circuit of the high-voltage energy storage converter also includes: a resistor component, one end of which is connected to the second end of the first switch component, and the other end of which is connected to the first end of the fourth switch component; A first capacitor and a second capacitor, one end of the first capacitor is connected to the positive port, the other end of the first capacitor is connected to the ground port, one end of the second capacitor is connected to the negative port, and the other end of the second capacitor is connected to the ground port.

6. A control method for a high voltage energy storage converter, wherein: The high-voltage energy storage converter comprises a converter circuit as claimed in any one of claims 1 to 5, and the control method of the high-voltage energy storage converter comprises: Acquire 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; Acquire the active power and reactive power of the high-voltage energy storage converter, perform data calculation 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; According to the pulse signal, the transformation coefficient of the converter circuit is controlled to adjust the output voltage of the high-voltage energy storage converter.

7. The control method of the high-voltage energy storage converter according to claim 6, wherein: The 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 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 a ratio of the second current value to the third current value; The command current value is converted into a three-phase alternating current quantity, and the pulse signal is generated according to the three-phase alternating current quantity.

8. A control device for a high voltage energy storage converter, wherein: The high-voltage energy storage converter comprises a converter circuit as claimed in any one of claims 1 to 5, and the control device of the high-voltage energy storage converter comprises: A control module, 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 to obtain the active power and reactive power of the high-voltage energy storage converter, perform data calculation 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 is also used to control the transformation coefficient of the converter circuit according to the pulse signal to adjust the output voltage of the high-voltage energy storage converter.

9. A control device for a high-voltage energy storage converter, wherein: include: processor; A memory, wherein a program or instruction is stored in the memory, and the processor implements the steps of the control method of the high-voltage energy storage converter as described in claim 6 or 7 when executing the program or instruction in the memory.

10. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the control method of the high-voltage energy storage converter as claimed in claim 6 or 7 are implemented.

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