CPT wireless energy transmission higher harmonic filter and CPT wireless energy transmission system based on same

Abstract

The invention discloses a CPT wireless energy transmission higher harmonic filter and a CPT wireless energy transmission system based on the same, and relates to the technical field of wireless power transmission. Comprising more than one harmonic filter circuit, wherein the CPT wireless energy transfer higher harmonic filter is connected between a CPT wireless energy transfer Class EF inverter and a CPT wireless energy transfer transmitting terminal compensation network; each harmonic filter circuit comprises a filter inductor and a filter capacitor; one end of the filter inductor is connected with a drain electrode of an MOS (Metal Oxide Semiconductor) tube in the CPT wireless energy transfer Class EF inverter and an input end of the CPT wireless energy transfer transmitting end compensation network; the other end of the filter inductor is connected with one end of the filter capacitor, and the other end of the filter capacitor is grounded. According to the invention, the harmonic suppression capability can be improved, the size of filter elements is reduced, the stability of resonant frequency is enhanced, and the design and debugging process is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless power transmission, in particular to a CPT wireless power transmission high-order harmonic filter and a CPT wireless power transmission system based thereon. Background Art

[0002] Inverters are key devices that convert direct current (DC) into alternating current (AC) and are widely used in power electronics, renewable energy systems, electric vehicles, household appliances, industrial automation, and communication equipment. In power electronic equipment, the performance of the inverter directly affects the efficiency and reliability of the system. Therefore, the efficiency and performance of the inverter are crucial and directly related to the energy utilization efficiency and the stability of equipment operation. Therefore, the development of efficient and low-loss inverter technology has always been an important research direction in the field of power electronics. With the increase in energy demand and the improvement of environmental awareness, inverter technology continues to develop to meet the requirements of high efficiency, environmental protection, and sustainable development. Especially in renewable energy systems, such as solar power generation and wind power generation, the efficient conversion capability of the inverter can significantly improve the power generation efficiency of the entire system, reduce energy loss, and promote the popularization of clean energy.

[0003] Among many inverter technologies, Class EF inverters have attracted wide attention in recent years due to their high efficiency and superior switching characteristics. Class EF inverters combine the advantages of Class E and Class F inverters, and achieve zero voltage switching (ZVS) and zero current switching (ZCS) through precise resonance and filtering design, thereby significantly reducing switching losses and improving overall efficiency.

[0004] Class E inverters achieve ZVS through a resonant circuit. When the switch is turned on, the voltage is close to zero, thereby reducing switching losses. The basic principle of Class E inverters is to design a resonant circuit so that the product of voltage and current is minimized at the moment of switching on and off, thereby achieving low-loss switching. However, Class E inverters have the problem of insufficient harmonic suppression in high-frequency applications. The presence of high-order harmonics will affect the waveform quality of the output voltage and generate electromagnetic interference (EMI), reducing the overall efficiency of the system.

[0005] The Class F inverter achieves ZCS by connecting a parallel resonant circuit at both ends of the switch. The current is close to zero when the switch is turned off, which also reduces the switching loss. The design concept of the Class F inverter is to use the resonant network to provide high impedance at the fundamental frequency and specific high-order harmonics, so that the current of the switch tube at these frequencies is zero. Although the Class F inverter has superior switching performance and high efficiency, its circuit design is complex and the cost is high.

[0006] In order to overcome the shortcomings of Class E and Class F inverters, Class EF inverters combine the advantages of both and achieve high efficiency and high power density by properly designing the resonant circuit and filter network. Class EF inverters introduce appropriate harmonic control in the resonant circuit to enable the switch tube to achieve ZVS and ZCS during the switching process. This design not only reduces switching losses, but also effectively suppresses high-order harmonics, improves the quality of the output voltage waveform, and reduces EMI.

[0007] However, when CPT wireless energy transmission technology is directly applied to Class EF inverters, there are still obvious harmonics in the line, especially the 2nd, 3rd, 4th and 5th harmonics, which reduce the stability of the resonant frequency, make the system design and debugging process more complicated, and cannot effectively manage heat and suppress electromagnetic interference. Summary of the invention

[0008] In view of the problems existing in the prior art, the present invention is proposed.

[0009] Therefore, the problem to be solved by the present invention is how to filter out the high-order harmonics in the CPT wireless power transmission system using the Class EF inverter.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0011] In the first aspect, an embodiment of the present invention provides a CPT wireless energy transmission high-order harmonic filter, which includes: the CPT wireless energy transmission high-order harmonic filter is connected between the CPT wireless energy transmission Class EF inverter and the CPT wireless energy transmission transmitter compensation network, including more than one harmonic filter circuit; each of the harmonic filter circuits includes a filter inductor and a filter capacitor; one end of the filter inductor is connected to the drain of the MOS tube in the CPT wireless energy transmission Class EF inverter and the input end of the CPT wireless energy transmission transmitter compensation network; the other end of the filter inductor is connected to one end of the filter capacitor, and the other end of the filter capacitor is grounded.

[0012] As a preferred solution of the CPT wireless energy transmission high-order harmonic filter of the present invention, the filtering frequencies of the multiple harmonic filtering circuits correspond one-to-one to the multiple harmonic frequencies of the CPT wireless energy transmission except the fundamental wave.

[0013] As a preferred solution of the CPT wireless energy transmission high-order harmonic filter described in the present invention, the CPT wireless energy transmission high-order harmonic filter includes multiple harmonic filter circuits, including a second harmonic filter circuit, a third harmonic filter circuit, a fourth harmonic filter circuit, a fifth harmonic filter circuit and a sixth harmonic filter circuit; which are respectively used to filter out the second harmonic, third harmonic, fourth harmonic, fifth harmonic and sixth harmonic in the wireless energy transmission line.

[0014] In a second aspect, an embodiment of the present invention provides a CPT wireless energy transmission system, which includes:

[0015] An electric energy transmitting end, a CPT coupling mechanism and an electric energy receiving end; the electric energy transmitting end includes a DC power supply, a CPT wireless energy transmission Class EF inverter, a CPT wireless energy transmission high-order harmonic filter and a transmitting end compensation network; the CPT coupling mechanism includes a pair of transmitting plates, a pair of receiving plates, an inductor L10 connected between the pair of transmitting plates, and an inductor L11 connected between a pair of receiving plates, and the inductor L10 and the inductor L11 are grounded; the electric energy receiving end includes a diode D and a load R connected in series and a capacitor C10 connected in parallel with the load R.

[0016] As a preferred solution of the CPT wireless energy transmission system of the present invention, the CPT wireless energy transmission ClassEF inverter includes a MOS tube, an inductor L1, an inductor L3 and a gate drive circuit; the inductor L1 is connected in series between a DC power supply and the drain of the MOS tube; the inductor L3 is connected between the source of the MOS tube and the ground; and the gate drive circuit is connected to the gate of the MOS tube.

[0017] As a preferred solution of the CPT wireless energy transmission system of the present invention, the transmitter compensation network includes a capacitor C7 and an inductor L9 connected in series between the drain of the MOS tube and the CPT coupling mechanism, and a capacitor C6 connected between the drain of the MOS tube and the ground.

[0018] As a preferred solution of the CPT wireless energy transmission system of the present invention, the MOS tube satisfies ZVS by adjusting the inductor L10 and the capacitor C7.

[0019] As a preferred solution of the CPT wireless energy transmission system of the present invention, the gate drive circuit includes an excitation power supply and an inductor L2 connected between the excitation power supply and the gate of the MOS tube.

[0020] In a third aspect, an embodiment of the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, wherein: when the computer program instructions are executed by the processor, the steps of the CPT wireless energy transmission system as described in the second aspect of the present invention are implemented.

[0021] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program instructions are executed by a processor, the steps of the CPT wireless energy transmission system as described in the second aspect of the present invention are implemented.

[0022] The beneficial effects of the present invention are as follows: the CPT wireless energy transmission high-order harmonic filter provided by the present invention and the CPT wireless energy transmission system based thereon are provided with a plurality of harmonic filter circuits for filtering out the high-order harmonics in the CPT wireless energy transmission system using the Class EF inverter between the CPT wireless energy transmission Class EF inverter and the CPT wireless energy transmission transmitter compensation network. The filtering frequency of each harmonic filter circuit is set one-to-one according to the multiple harmonic frequencies of the CPT wireless energy transmission except the fundamental wave, that is, each harmonic filter circuit filters out one high-order harmonic, so that a plurality of harmonic filter circuits are set according to the actual filtering requirements to effectively suppress the second and above harmonics in the CPT wireless energy transmission system, improve the harmonic suppression capability, reduce the size of the filter components, enhance the stability of the resonant frequency, simplify the design and debugging process, and effectively manage heat and suppress electromagnetic interference, thereby significantly improving the performance and application range of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 This is a circuit diagram of a CPT wireless energy transmission system based on a CPT wireless energy transmission second harmonic filter.

[0025] Figure 2 for Figure 1 The inverter output waveform.

[0026] Figure 3 for Figure 1 Output FFT result diagram of the system shown.

[0027] Figure 4 This is the circuit diagram of the CPT wireless energy transmission system based on the CPT wireless energy transmission high-order harmonic filter.

[0028] Figure 5 for Figure 4 Inverter output waveform of the system shown.

[0029] Figure 6 for Figure 4 Output FFT result diagram of the system shown. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, 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 accompanying drawings.

[0031] 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.

[0032] 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 does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1-2 , which is the first embodiment of the present invention, and provides a CPT wireless energy transmission high-order harmonic filter, including:

[0035] The CPT wireless energy transmission high-order harmonic filter is connected between the CPT wireless energy transmission Class EF inverter and the CPT wireless energy transmission transmitter compensation network, and includes more than one harmonic filter circuit; each harmonic filter circuit includes a filter inductor and a filter capacitor.

[0036] One end of the filter inductor is connected to the drain of the MOS tube in the CPT wireless energy transmission Class EF inverter and the input end of the compensation network of the CPT wireless energy transmission transmitter; the other end of the filter inductor is connected to one end of the filter capacitor, and the other end of the filter capacitor is grounded.

[0037] The CPT wireless energy transmission high-order harmonic filter includes N (≥1) harmonic filter circuits, namely, a second harmonic filter circuit, a third harmonic filter circuit, a fourth harmonic filter circuit, a fifth harmonic filter circuit, and a sixth harmonic filter circuit to an Nth harmonic filter circuit, which are respectively used to filter out the second harmonic, the third harmonic, the fourth harmonic, the fifth harmonic, and the sixth harmonic to the Nth harmonic in the wireless energy transmission line.

[0038] The filtering frequencies of the multiple harmonic filtering circuits are set one-to-one according to the multiple harmonic frequencies other than the fundamental wave of the CPT wireless energy transmission.

[0039] This embodiment also provides a CPT wireless energy transmission system based on a CPT wireless energy transmission high-order harmonic filter, including:

[0040] The power transmitting end, CPT coupling mechanism and power receiving end, the power transmitting end includes a DC power supply, a CPT wireless energy transmission Class EF inverter, a CPT wireless energy transmission high-order harmonic filter, and a transmitting end compensation network, and the power receiving end includes a diode D and a load R connected in series and a capacitor C10 connected in parallel with the load R.

[0041] The CPT wireless energy transmission Class EF inverter includes a MOS tube, an inductor L1, an inductor L3 and a gate drive circuit; wherein the inductor L1 is connected in series between the DC power supply and the drain of the MOS tube, the inductor L3 is connected between the source of the MOS tube and the ground, and the gate drive circuit is connected to the gate of the MOS tube.

[0042] The gate drive circuit includes an excitation power supply and an inductor L2 connected between the excitation power supply and the gate of the MOS tube; wherein the filtering frequencies of multiple harmonic filtering circuits are set one-to-one according to multiple harmonic frequencies other than the fundamental wave of the CPT wireless energy transmission.

[0043] The CPT wireless energy transmission high-order harmonic filter includes N (≥1) harmonic filter circuits, namely, a second harmonic filter circuit, a third harmonic filter circuit, a fourth harmonic filter circuit, a fifth harmonic filter circuit, and a sixth harmonic filter circuit to an Nth harmonic filter circuit, which are respectively used to filter out the second harmonic, the third harmonic, the fourth harmonic, the fifth harmonic, and the sixth harmonic to the Nth harmonic in the wireless energy transmission line.

[0044] The transmitter compensation network includes a capacitor C7 and an inductor L9 which are sequentially connected in series between the drain of the MOS tube and the CPT coupling mechanism, and a capacitor C6 which is connected between the drain of the MOS tube and the ground.

[0045] The CPT coupling mechanism includes a pair of emitter plates, a pair of receiving plates, an inductor L10 connected between the pair of emitter plates, and an inductor L11 connected between the pair of receiving plates, and the inductor L10 and the inductor L11 are also grounded; the grounded pair of emitter plates and receiving plates are equivalent to capacitor C9, and the other pair of emitter plates and receiving plates are equivalent to capacitor C8.

[0046] As an example, Figure 1 The structure diagram of the CPT wireless energy transmission system is shown in which a harmonic filtering circuit (i.e., a second harmonic circuit) is provided to filter out the second harmonic in the system.

[0047] The selection of inverter components is based on realizing certain impedance characteristics seen at the output end of the switch tube when the switch tube is disconnected. The system frequency, that is, the switch tube frequency, is set to 6.78MHz, and a relatively basic Class EF circuit is designed, that is, a circuit after removing the second harmonic; the inverter part of the transmitter only uses a MOSFET tube, and then connects the second harmonic filter circuit and the resonant circuit.

[0048] The CPT coupling mechanism is composed of two capacitors and two inductors. The resonant frequency of the coupling mechanism is equal to the fundamental frequency. The power receiving end is rectified by a diode and then connected to the load. Figure 1 The main device parameters of the system are shown in Table 1:

[0049] Table 1 System parameters using second harmonic filter circuit

[0050] parameter Numeric parameter Numeric L1 / uH 1.51 C1 / pF 65 L2 / pH 50 C2 / pF 260.4 L3 / pH 10 C3 / nF 4 L4 / uH 2.20 C4 / pF 500 L5 / nH 300 C5 / pF 500 L6 / / uH 1 C6 / uF 1 L7 / uH 1 R / Ω 6

[0051] The output waveform of the system inverter is as follows: Figure 2 As shown, the black line is the output of the inverter, and the blue line is the voltage of the MOS tube. It can be seen that the MOS tube can achieve ZVS during the switching process.

[0052] This embodiment also provides a computer device, which is applicable to the CPT wireless energy transmission high-order harmonic filter and the CPT wireless energy transmission system based thereon, and includes a memory and a processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to realize the CPT wireless energy transmission system proposed in the above embodiment.

[0053] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0054] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, the CPT wireless energy transmission system proposed in the above embodiment is implemented.

[0055] In summary, the CPT wireless energy transmission high-order harmonic filter and the CPT wireless energy transmission system based thereon provided by the present invention set a plurality of harmonic filter circuits for filtering out the high-order harmonics in the CPT wireless energy transmission system using the Class EF inverter between the CPT wireless energy transmission Class EF inverter and the CPT wireless energy transmission transmitter compensation network. The filtering frequency of each harmonic filter circuit is set one-to-one according to the multiple harmonic frequencies of the CPT wireless energy transmission except the fundamental wave, that is, each harmonic filter circuit filters out one high-order harmonic, so that a plurality of harmonic filter circuits are set according to the actual filtering requirements to effectively suppress the second and above harmonics in the CPT wireless energy transmission system, improve the harmonic suppression capability, reduce the size of the filter components, enhance the stability of the resonant frequency, simplify the design and debugging process, and effectively manage heat and suppress electromagnetic interference, thereby significantly improving the performance and application range of the inverter.

[0056] Example 2

[0057] Reference Figure 3 to Figure 6 , which is the second embodiment of the present invention, and this embodiment provides a CPT wireless energy transmission system. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through simulation experiments.

[0058] Figure 3 This is the FFT (Fast Fourier Transform) result of the second harmonic filter circuit. It can be seen that compared with the fundamental wave, the second harmonic is very small and is effectively filtered out, but the values ​​of the 3rd, 4th, 5th, and 6th harmonics are still very large.

[0059] Because high-order harmonics still exist and their values ​​are very large, in order to filter out higher-order harmonics, a high-order harmonic removal circuit (mainly 3rd, 4th, 5th, and 6th harmonics) is designed based on the second harmonic circuit, and the system parameters are adjusted to enable the switch tube to achieve ZVS and reduce switching losses.

[0060] System circuit diagram Figure 4 As shown, on the basis of the second harmonic filter circuit, the third harmonic filter circuit, the fourth harmonic filter circuit, the fifth harmonic filter circuit and the sixth harmonic filter circuit are added. In the experiment, up to 6 harmonics can be filtered out.

[0061] Figure 4 The main device parameters of the circuit diagram are shown in Table 2. Each LC harmonic filter circuit of the high-order harmonic filter circuit corresponds to a certain harmonic frequency, and then the inductor L1 connected in series with the power supply and the capacitor C2 connected in parallel with the high-order harmonic filter circuit are adjusted to achieve ZVS in the switching process of the switch tube. Table 2 is as follows:

[0062] Table 2 System parameters using multiple high-order harmonic filter circuits

[0063] parameter Numeric parameter Numeric L1 / uH 0.75 C1 / pF 61 L2 / pH 50 C2 / pF 61.2 L3 / pH 10 C3 / pF 61.2 L4 / uH 2.20 C4 / pF 61.2 L5 / uH 1 C5 / pF 61.2 L6 / / uH 0.563 C6 / pF 266.5 L7 / uH 0.39 C7 / nF 4 L8 / uH 0.25 C8 / pF 500 L9 / nH 300 C9 / pF 500 L10 / uH 1 C10 / uF 1 L11 / uH 1 R / Ω 6

[0064] According to the parameters shown in Table 2, we can get Figure 4 The simulation waveform of the circuit shown is as follows Figure 5 As shown, the black line is the output of the inverter, and the blue line is the voltage of the MOS tube. It can be seen that the MOS tube can achieve ZVS during the switching process.

[0065] Figure 6 For the FFT analysis of the high-order harmonic filter circuit, the test design filters out the 2nd, 3rd, 4th, 5th, and 6th harmonics. It can be seen that the 2nd, 3rd, 4th, 5th, and 6th harmonics are very small, among which the 2nd, 3rd, 4th, and 6th harmonics can be almost ignored. The 5th harmonic is higher than other high-order harmonics, but it is also relatively small compared to the fundamental wave. Figure 3 In comparison, the effect of filtering high-order harmonics is obvious, which shows that the high-order harmonic filter circuit effectively filters out high-order harmonics.

[0066] Will Figure 3 and Figure 5 By comparison, it can be seen that the added high-order harmonic filtering circuit effectively filters out the high-order harmonics that are intended to be filtered out.

[0067] The circuit adds the required harmonic filtering circuit on the basis of the existing Class EF inverter. The circuit structure is simple and only two devices need to be adjusted to achieve ZVS of the switch tube, which is easy to adjust.

[0068] The embodiment of the present invention provides a CPT wireless energy transmission system using a CPT wireless energy transmission high-order harmonic filter. The CPT wireless energy transmission high-order harmonic filter, based on the inverter Class EF, realizes filtering of multiple harmonics, stabilizes the voltage waveform, and reduces the voltage stress of the switch tube.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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. CPT wireless energy transmission high harmonic filter, characterized by: include, The CPT wireless energy transmission high-order harmonic filter is connected between the CPT wireless energy transmission Class EF inverter and the CPT wireless energy transmission transmitter compensation network, including more than one harmonic filtering circuit; Each of the harmonic filtering circuits includes a filtering inductor and a filtering capacitor; One end of the filter inductor is connected to the drain of the MOS tube in the CPT wireless energy transmission Class EF inverter and the input end of the compensation network of the CPT wireless energy transmission transmitter; the other end of the filter inductor is connected to one end of the filter capacitor, and the other end of the filter capacitor is grounded.

2. The CPT wireless energy transmission high-order harmonic filter according to claim 1, characterized in that: The filtering frequencies of the multiple harmonic filtering circuits correspond one-to-one to the multiple harmonic frequencies other than the fundamental wave of the CPT wireless energy transmission.

3. The CPT wireless energy transmission high-order harmonic filter as claimed in claim 2, characterized in that: The CPT wireless energy transmission high-order harmonic filter includes multiple harmonic filter circuits, including a second harmonic filter circuit, a third harmonic filter circuit, a fourth harmonic filter circuit, a fifth harmonic filter circuit and a sixth harmonic filter circuit; they are respectively used to filter out the second harmonic, third harmonic, fourth harmonic, fifth harmonic and sixth harmonic in the wireless energy transmission line.

4. A CPT wireless energy transmission system, based on the CPT wireless energy transmission high-order harmonic filter according to any one of claims 1 to 3, characterized in that: include: Power transmitting end, CPT coupling mechanism and power receiving end; The electric energy transmitting end includes a DC power supply, a CPT wireless energy transmission Class EF inverter, a CPT wireless energy transmission high-order harmonic filter and a transmitting end compensation network; The CPT coupling mechanism includes a pair of emitter plates, a pair of receiving plates, an inductor L10 connected between the pair of emitter plates, and an inductor L11 connected between the pair of receiving plates, and the inductor L10 and the inductor L11 are grounded; The power receiving end includes a diode D and a load R connected in series and a capacitor C10 connected in parallel with the load R.

5. The CPT wireless energy transmission system according to claim 4, characterized in that: The CPT wireless energy transmission Class EF inverter includes a MOS tube, an inductor L1, an inductor L3 and a gate drive circuit; The inductor L1 is connected in series between the DC power supply and the drain of the MOS tube; The inductor L3 is connected between the source of the MOS tube and the ground; The gate driving circuit is connected to the gate of the MOS tube.

6. The CPT wireless energy transmission system according to claim 5, characterized in that: The transmitter compensation network includes a capacitor C7 and an inductor L9 connected in series between the drain of the MOS tube and the CPT coupling mechanism, and a capacitor C6 connected between the drain of the MOS tube and the ground.

7. The CPT wireless energy transmission system according to claim 6, characterized in that: By adjusting the inductor L10 and the capacitor C7, the MOS tube can meet ZVS.

8. The CPT wireless energy transmission system according to claim 6, characterized in that: The gate driving circuit includes an excitation power supply and an inductor L2 connected between the excitation power supply and the gate of the MOS tube.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the CPT wireless energy transmission system according to any one of claims 4 to 8 are implemented.

10. 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 the CPT wireless energy transmission system according to any one of claims 4 to 8 are implemented.

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