Method and system for improving short-time high-frequency energy storage efficiency

Abstract

The invention discloses a method and system for improving short-time high-frequency energy storage efficiency, and belongs to the technical field of power system energy storage equipment. Phase shift control is improved, and adjustment is carried out in different time; on the basis of phase shift control, energy is fed back from a secondary side to a primary side by conducting a synchronous rectification switch tube in advance. According to the invention, the problem that a lagging bridge arm switching tube is difficult to realize ZVS is solved, the realization range of a soft switch is widened, and the switching loss is reduced; the working state of the switching tube is optimized, and the voltage and current stress in the switching process is reduced; according to the short-time high-frequency energy storage system, effective feedback of energy and lifting of resonance current are achieved, the resonance current at the turn-off moment of a lagging bridge arm switching tube is improved, ZVS is achieved, switching loss is reduced, and therefore the overall efficiency of the short-time high-frequency energy storage system is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power system energy storage equipment, and in particular to a method and system for improving short-term high-frequency energy storage efficiency. Background Art

[0002] With the growth of global energy demand and the widespread application of clean energy, energy storage systems, as a key technology to balance supply and demand and improve energy utilization, are receiving increasing attention for their efficiency. In traditional energy storage systems, due to the small resonant current under short-term and high-frequency conditions, the lagging bridge arm switch tube of the inverter unit is prone to lose zero voltage switching (ZVS), resulting in increased switching losses and reduced energy storage efficiency. Therefore, how to improve the control strategy to improve the efficiency of short-term and high-frequency energy storage has become an urgent problem to be solved. Summary of the invention

[0003] In view of the above existing problems, the present invention realizes energy feedback from the secondary side to the primary side through synchronous rectification energy feedback control, improves the resonant current at the time when the lagging bridge arm switch tube is turned off, and then provides sufficient energy for the charging and discharging process of the switch tube output capacitor during the dead time, realizes ZVS, and thus improves energy storage efficiency. It realizes the efficiency improvement of the energy storage system under short-term high-frequency conditions, and has important practical application value and promotion prospects.

[0004] In order to solve the above technical problems, a method for improving the efficiency of short-term high-frequency energy storage is proposed, including: The electrical data is acquired based on the LCLC synchronous rectification type multi-resonant DC converter. The phase shift control is improved based on the acquired data to calculate the resonant capacitor voltage in different time periods. The energy is fed back from the secondary side to the primary side by turning on the synchronous rectification switch tube in advance to determine the efficiency improvement result.

[0005] As a preferred solution of the method for improving short-time high-frequency energy storage efficiency described in the present invention, the electrical data obtained includes current, voltage, resonant angular frequency, equivalent impedance and capacitance data obtained during the dead time before the primary switch tube is turned off.

[0006] As a preferred solution of the method for improving the short-time high-frequency energy storage efficiency described in the present invention, the improved phase shift control includes dividing different times into an initial segment, a rising segment, a charging segment, a mode end segment, an interval end segment, and a ZVS segment according to the acquired electrical data.

[0007] The initial segment includes - During the time period, The moment begins, Rising to high level, lagging bridge arm The switch tube is turned on. , Still open, through , , , The resonant unit transfers power to the load side, and the resonant current The effective value continues to rise, among which, It is a switch tube of the lagging bridge arm of the inverter unit. It is a switch tube of the leading bridge arm of the inverter unit. for The driving signal, It is a switch tube of the leading bridge arm of the rectifier unit.

[0008] As a preferred solution of the method for improving short-time high-frequency energy storage efficiency described in the present invention, the rising section includes: - During the time period, The moment begins, and atresia, , The effective value continues to rise. During this stage, the voltage on the secondary side of the transformer Control , for The driving signal, for The driving signal, is the maximum output voltage.

[0009] As a preferred solution of the method for improving short-time high-frequency energy storage efficiency described in the present invention, the charging section includes: - During the time period, At the beginning of the moment, the lagging bridge arm Conducting, at this time Signal, , , , The resonant unit remains in a charged state and the electrical energy is transferred to the load, wherein, for The driving signal is , are the rth resonant inductor and resonant capacitor respectively.

[0010] As a preferred solution of the method for improving short-time high-frequency energy storage efficiency described in the present invention, the mode end section includes: - During this time period, the resonant current and The amplitude is equivalent, at this time, the resonant unit is , , , The resonant angular frequency in the current period is , transformer secondary voltage No longer in control ,until At this moment, this mode ends. During this period, It is expressed as: , During this period, the resonant capacitor The voltage is expressed as: , in, for The resonant voltage at the moment.

[0011] As a preferred solution of the method for improving short-time high-frequency energy storage efficiency described in the present invention, the interval end section is included in - During the time period, the driving signal Driving rectifier tube and Conductivity, , , Form a discharge loop, discharge to the primary resonant circuit, the secondary voltage Controlled , The discharge current combines with the resonant circuit current through the magnetizing inductor path, causing the inductor current to rise linearly until time Shutdown, the current interval ends, where for The driving signal, It is another switch tube of the leading bridge arm of the rectifier unit. The discharge circuit charges the capacitor.

[0012] In the current period, It is expressed as: , During this period, the resonant capacitor The voltage is expressed as: , The ZVS stage is included in - During the time period, the driving signal Becomes low level to drive the rectifier tube During the dead zone, the resonant current begins to decrease due to - The resonant current in the time period is raised by the feedback current, and the charging and discharging of the output capacitor of the switch tube is completed within the dead time, that is, the resonant circuit charges the parasitic capacitor of the lagging bridge arm rectifier tube to ensure that the lagging bridge arm rectifier tube Achieve ZVS.

[0013] Another object of the present invention is to provide a system for improving the efficiency of short-term high-frequency energy storage. The present invention solves the problem of low efficiency of existing energy storage systems in processing high-frequency, short-term energy storage and conversion. By adopting an LCLC synchronous rectification type multi-resonance DC converter topology structure, synchronous rectification control is achieved, and the resonant cavity design is optimized to reduce energy loss and improve the dynamic response capability and overall efficiency of the system, thereby ensuring the high efficiency of the energy conversion process while meeting the high-frequency, short-term energy storage requirements.

[0014] As a preferred solution of the system for improving the short-time high-frequency energy storage efficiency described in the present invention, it is characterized by comprising an inverter unit, a resonance unit, a transformer and a rectifier unit.

[0015] The inverter unit and the rectifier unit are respectively composed of a full-bridge circuit consisting of four switching tubes, and are composed of four parts: an inverter unit, a resonance unit, a transformer and a rectifier unit.

[0016] The inverter unit consists of , , , The full-bridge circuit consists of four switching tubes. , For the leading bridge arm, , It is the lagging bridge arm.

[0017] The rectifying unit consists of , , , The full-bridge circuit consists of four switching tubes. and are the driving signals of S1 and S3 respectively, and They are and The driving signal.

[0018] The resonant cavity part is based on the traditional LLC resonant converter, adding additional capacitors , the transformer ratio is n:1, where the original excitation inductance and the additional capacitance introduced The new equivalent excitation inductance is formed by connecting in series .

[0019] A computer device includes a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of a method for improving short-time high-frequency energy storage efficiency are implemented.

[0020] A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of a method for improving the efficiency of short-time high-frequency energy storage are implemented.

[0021] Beneficial effects of the present invention: The present invention (1) improves energy storage efficiency: The present invention optimizes the turn-on timing of the synchronous rectifier switch tube to achieve effective energy feedback and increase the resonant current, increase the resonant current at the turn-off moment of the lagging bridge arm switch tube, achieve ZVS, reduce switching losses, and thus significantly improve the overall efficiency of the short-term high-frequency energy storage system.

[0022] (2) Broadening the scope of soft switching: The method of the present invention is suitable for energy storage systems under short-term high-frequency conditions, and can solve the problem of reduced efficiency of traditional methods under such conditions. Under light load conditions, the present invention effectively solves the problem that the lagging bridge arm switch tube is difficult to achieve ZVS, broadens the scope of soft switching, and reduces switching losses.

[0023] (3) Enhance system stability: By improving the energy storage capacity of the resonant cavity and improving the working state of the switch tube, optimizing the working state of the switch tube, and reducing the voltage and current stress during the switching process, the present invention enhances the stability and reliability of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 An overall flow chart of a method for improving short-term high-frequency energy storage efficiency provided by an embodiment of the present invention.

[0026] Figure 2 A short-time high-frequency energy storage LCLC converter topology structure of a method for improving short-time high-frequency energy storage efficiency is provided in one embodiment of the present invention.

[0027] Figure 3 A diagram showing the results of improved phase shift control for a method for improving short-time high-frequency energy storage efficiency provided by an embodiment of the present invention.

[0028] Figure 4 A system solution module diagram of a system for improving short-term high-frequency energy storage efficiency provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0032] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides a method for improving short-time high-frequency energy storage efficiency, comprising: The present invention is particularly suitable for an energy storage system based on a synchronous rectification type LCLC synchronous rectification type multi-resonance DC converter, realizing effective energy feedback between the secondary side and the primary side, thereby improving the short-time high-frequency energy storage efficiency.

[0036] S1: Acquire electrical data based on LCLC synchronous rectification type multi-resonance DC converter.

[0037] Specifically, the current, voltage, resonant angular frequency, equivalent impedance and capacitance data are obtained during the dead time before the primary switch tube is turned off.

[0038] The resonant current in different time periods is calculated based on the acquired rated power data, and the resonant capacitor voltage in different time periods is determined.

[0039] S2: Improve the phase shift control by combining the acquired data to calculate the resonant capacitor voltage in different time periods.

[0040] Furthermore, the secondary-side synchronous rectification switch tube is turned on in advance during the dead time before the primary-side switch tube is turned off.

[0041] The advance turn-on time of the synchronous rectification switch tube is determined based on theoretical analysis and experimental verification, so that the resonant current of the lagging bridge arm switch tube reaches the requirement before it is turned off, thus achieving ZVS.

[0042] The feedback energy is transferred to the primary resonant cavity through the transformer, increasing the resonant current and providing energy for the charging and discharging process of the output capacitor of the lagging bridge arm switch tube.

[0043] It should be noted that the different times are divided into an initial segment, a rising segment, a charging segment, a mode end segment, an interval end segment, and a ZVS segment.

[0044] The initial segment includes - During the time period, The moment begins, Rising to high level, lagging bridge arm The switch tube is turned on. , Still open, through , , , The resonant unit transfers power to the load side, and the resonant current The effective value continues to rise, among which, It is a switch tube of the lagging bridge arm of the inverter unit. It is a switch tube of the leading bridge arm of the inverter unit. for The driving signal, It is a switch tube of the leading bridge arm of the rectifier unit.

[0045] It is expressed as: , The real-time voltage of the resonant discharge of the resonant capacitor is expressed as: , in, is the input voltage of the high-frequency energy storage LCLC converter, is the transformer turns ratio, is the output voltage of the high-frequency energy storage LCLC converter, is the equivalent impedance of the LCLC converter, is the main resonant angular frequency, t is the current moment, is the initial moment.

[0046] Specifically, the ascending stage includes - During the time period, The moment begins, and atresia, , The effective value continues to rise. During this stage, the voltage on the secondary side of the transformer Control , for The driving signal, for The driving signal, is the maximum output voltage.

[0047] It is expressed as: , During this period, the resonant capacitor The voltage is expressed as: , Specifically, in - During the time period, At the beginning of the moment, the lagging bridge arm Conducting, at this time Signal, , , , The resonant unit remains in a charged state and the electrical energy is transferred to the load, wherein, for The driving signal.

[0048] During this period, It is expressed as: , During this period, the resonant capacitor The voltage is expressed as: , in, is the output voltage of the high-frequency energy storage LCLC converter, is the equivalent impedance of the LCLC converter. is the main resonant angular frequency, t is the current moment, and n is the transformer turns ratio.

[0049] It should also be noted that the end of the pattern segment includes, - During this time period, the resonant current and The amplitude is equivalent, at this time, the resonant unit is , , , The resonant angular frequency in the current period is , transformer secondary voltage No longer in control ,until At this moment, this mode ends. During this period, It is expressed as: , During this period, the resonant capacitor The voltage is expressed as: , Furthermore, the interval end segment is included in - During the time period, the driving signal Driving rectifier tube and Conductivity, , , Form a discharge loop, discharge to the primary resonant circuit, the secondary voltage Controlled , The discharge current combines with the resonant circuit current through the magnetizing inductor path, causing the inductor current to rise linearly until time Shutdown, the current interval ends, where for The driving signal, It is another switch tube of the leading bridge arm of the rectifier unit. The discharge circuit charges the capacitor.

[0050] In the current period, It is expressed as: , During this period, the resonant capacitor The voltage is expressed as: , in, for The resonant current at that moment.

[0051] The ZVS stage is included in - During the time period, the driving signal Becomes low level to drive the rectifier tube During the dead zone, the resonant current begins to decrease due to - The resonant current in the time period is raised by the feedback current, and the charging and discharging of the output capacitor of the switch tube is completed within the dead time, that is, the resonant circuit charges the parasitic capacitor of the lagging bridge arm rectifier tube to ensure that the lagging bridge arm rectifier tube Achieve ZVS; during this period, It is expressed as: , During this period, the resonant capacitor The voltage can be expressed as: , in, for The resonant voltage at the moment.

[0052] S3: By turning on the synchronous rectification switch tube in advance, energy is fed back from the secondary side to the primary side to determine the efficiency improvement result.

[0053] Example 2, reference Figure 3 , which is the second embodiment of the present invention, provides a method for improving the efficiency of short-term high-frequency energy storage. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through experiments.

[0054] Figure 3 This is the experimental waveform when the energy storage output power is 0.55kW when the improved phase-shift control is adopted; it can be seen that: Compare When the power is turned on in advance (about 420mS), ZVS can be well achieved by using improved phase shift control. It can effectively improve the efficiency of short-term high-frequency energy storage operation.

[0055] Embodiment 3, the third embodiment of the present invention, is different from the first two embodiments in that: If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0056] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0057] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0058] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0059] Example 4, reference Figure 2 and Figure 4 , which is the fourth embodiment of the present invention, provides a system for improving short-time high-frequency energy storage efficiency, including an inverter unit, a resonance unit, a transformer and a rectifier unit.

[0060] like Figure 2 and Figure 4 As shown in the figure, based on the LCLC synchronous rectification type multi-resonant DC converter, its topology structure includes an inverter unit, a resonant unit, a transformer and a rectifier unit. The inverter unit and the rectifier unit are respectively composed of a full-bridge circuit composed of four switch tubes, and the inverter unit, the resonant unit, the transformer and the rectifier unit are composed of four parts. , , , The full-bridge circuit consists of four switching tubes. , For the leading bridge arm, , is the lagging bridge arm. The rectifier unit consists of , , , The full-bridge circuit consists of four switching tubes. and are the driving signals of S1 and S3 respectively, and They are and The driving signal is convenient for synchronous rectification control. For the resonant cavity part, on the basis of the traditional LLC resonant converter, in addition to the resonant inductor , resonant capacitor and the original excitation inductance In addition, additional capacitors are introduced , the transformer ratio is n:1. Among them, the original excitation inductance and the additional capacitance introduced The new equivalent excitation inductance is formed by connecting in series .

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for improving short-term high-frequency energy storage efficiency, characterized in that: include, The electrical data obtained based on the LCLC synchronous rectification type multi-resonant DC converter includes the current, voltage, resonant angular frequency, equivalent impedance and capacitance data obtained during the dead time before the primary switch tube is turned off; Improve the phase shift control based on the acquired data to calculate the resonant capacitor voltage in different time periods, wherein the improved phase shift control includes dividing different time periods into an initial section, a rising section, a charging section, a mode end section, an interval end section, and a ZVS section according to the acquired electrical data; The initial segment includes - During the time period, The moment begins, Rising to high level, lagging bridge arm The switch tube is turned on. , Still open, through , , , The resonant unit transfers power to the load side, and the resonant current The effective value continues to rise, among which, It is a switch tube of the lagging bridge arm of the inverter unit. It is a switch tube of the leading bridge arm of the inverter unit. for The driving signal, It is a switch tube of the leading bridge arm of the rectifier unit; By turning on the synchronous rectification switch tube in advance, energy is fed back from the secondary side to the primary side to determine the efficiency improvement result.

2. A method for improving short-term high-frequency energy storage efficiency as claimed in claim 1, characterized in that: The ascending section includes: - During the time period, The moment begins, and atresia, , The effective value continues to rise. During this stage, the voltage on the secondary side of the transformer Control , for The driving signal, for The driving signal, is the maximum output voltage.

3. A method for improving short-term high-frequency energy storage efficiency as claimed in claim 2, characterized in that: The charging section includes: - During the time period, At the beginning of the moment, the lagging bridge arm Conducting, at this time Signal, , , , The resonant unit remains in a charged state and the electrical energy is transferred to the load, wherein, for The driving signal is , are the rth resonant inductor and resonant capacitor respectively.

4. A method for improving short-term high-frequency energy storage efficiency as claimed in claim 3, characterized in that: The mode end segment includes, - During this time period, the resonant current and The amplitude is equivalent, at this time, the resonant unit is , , , The resonant angular frequency in the current period is , transformer secondary voltage No longer in control ,until At this moment, this mode ends. During this period, It is expressed as: ， During this period, the resonant capacitor The voltage is expressed as: ， in, is the equivalent impedance of the LCLC converter, and t is the current moment.

5. A method for improving short-term high-frequency energy storage efficiency as claimed in claim 4, characterized in that: The interval end segment is included in - During the time period, the driving signal Driving rectifier tube and Conductivity, , , Form a discharge loop, discharge to the primary resonant circuit, and the secondary voltage Controlled , The discharge current combines with the resonant circuit current through the magnetizing inductor path, causing the inductor current to rise linearly until time Shutdown, the current interval ends, where for The driving signal, It is another switch tube of the leading bridge arm of the rectifier unit. The discharge circuit charges the capacitor; In the current period, It is expressed as: ， During this period, the resonant capacitor The voltage is expressed as: ， in, is the output voltage of the high-frequency energy storage LCLC converter, is the main resonant angular frequency, n is the transformer turns ratio; The ZVS stage is included in - During the time period, the driving signal Becomes low level to drive the rectifier tube During the dead zone, the resonant current begins to decrease due to - The resonant current in the time period is raised by the feedback current, and the charging and discharging of the output capacitor of the switch tube is completed within the dead time, that is, the resonant circuit charges the parasitic capacitor of the lagging bridge arm rectifier tube to ensure that the lagging bridge arm rectifier tube Achieve ZVS.

6. A system using a method for improving short-time high-frequency energy storage efficiency as claimed in any one of claims 1 to 5, characterized in that: It includes an inverter unit, a resonant unit, a transformer and a rectifier unit; The inverter unit and the rectifier unit are respectively composed of a full-bridge circuit consisting of four switch tubes, and are composed of four parts: an inverter unit, a resonant unit, a transformer and a rectifier unit; The inverter unit consists of , , , The full-bridge circuit consists of four switching tubes. , For the leading bridge arm, , is the lagging bridge arm; The rectifying unit consists of , , , The full-bridge circuit consists of four switching tubes. and are the driving signals of S1 and S3 respectively, and They are and The driving signal of The resonant cavity part is based on the traditional LLC resonant converter, adding additional capacitors , the transformer ratio is n:1, where the original excitation inductance and the additional capacitance introduced The new equivalent excitation inductance is formed by connecting in series .

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of a method for improving short-time high-frequency energy storage efficiency as described in any one of claims 1 to 6 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for improving short-time high-frequency energy storage efficiency described in any one of claims 1 to 7 are implemented.

Images