CN110492747B - Wireless power transmission inversion source based on resonant dc-dc converter - Google Patents
Wireless power transmission inversion source based on resonant dc-dc converter Download PDFInfo
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- CN110492747B CN110492747B CN201810461322.4A CN201810461322A CN110492747B CN 110492747 B CN110492747 B CN 110492747B CN 201810461322 A CN201810461322 A CN 201810461322A CN 110492747 B CN110492747 B CN 110492747B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention provides a wireless power transmission inversion source based on a resonant dc-dc converter, and belongs to the technical field of wireless power transmission of electric vehicles. The system comprises a switch network, a resonance network, a high-frequency rectification circuit, a low-frequency filtering circuit, a direct-current output acquisition circuit, an FPGA data processing circuit, an FPGA output control circuit and an inverter. The wireless power transmission inversion source has the characteristics of high stability, high safety and the like.
Description
Technical Field
The invention relates to a wireless power transmission inversion source based on a resonant dc-dc converter, and belongs to the technical field of wireless power transmission of electric vehicles.
Background
Two major bottleneck problems exist in the current electric automobile development: one is the battery problem on the vehicle-from the recent technical point of view, there are many aspects problems such as volume, weight, price, material, safety, charging speed, life-span, etc., in addition the production of the battery and recycling process used belong to the process of high pollution, consuming resources, destroying the ecological environment, these characteristics bring difficulty to the industrialization of the electric vehicle; on the other hand, the problem of charging infrastructure on the ground is that due to the limitation of battery material characteristics (electric energy density, power density and the like), the battery has long charging time and short endurance mileage, needs a large amount of charging or battery replacement facilities with high frequency, brings great difficulty to municipal construction, and the facilities need to occupy a large amount of ground area, are not beneficial to unified management and have high operation and maintenance cost. And also brings great inconvenience to the vehicle user.
Disclosure of Invention
The invention provides a wireless power transmission inversion source based on a resonant dc-dc converter, aiming at solving the problems of poor stability and low safety of the wireless power transmission inversion source of an electric automobile in the prior art, and adopting the following technical scheme:
a wireless electric energy transmission inversion source based on a resonant DC-DC converter comprises a resonant DC-DC converter 1, an inverter 2, a transmitting end coupling mechanism 3, a receiving end coupling mechanism 4, a rectifying circuit 5, an output sampling circuit 6, an output acquisition AD converter 7 and an FPGA logic controller 8; the electric energy signal input end of the resonant DC-DC converter 1 is connected with a DC electric energy input; the electric energy signal output end of the resonant DC-DC converter 1 is connected with the electric energy signal input end of the inverter 2; the coupling end of the transmitting end coupling mechanism 3 is coupled and inductively connected with the coupling end of the receiving end coupling mechanism 4; the electric energy signal output end of the receiving end coupling mechanism 4 is connected with the electric energy signal input end of the rectifying circuit 5; the current and voltage signal output end of the resonant DC-DC converter 1 is correspondingly connected with the current and voltage signal input end of the output sampling circuit 6; the data signal output end of the output sampling circuit 6 is connected with the data signal input end of the output acquisition AD converter 7; the data signal output end of the output acquisition AD converter 7 is connected with the data signal input end of the FPGA logic controller 8; and the control signal output end of the FPGA logic controller 8 is connected with the control signal input end of the resonant DC-DC converter 1.
Further, the resonant DC-DC converter 1 includes a DC filter circuit 11, a switching network mechanism 12, a resonant network mechanism 13, a high-frequency rectification circuit 14, and a low-pass filter circuit 15; the DC input end of the direct current filter circuit 11 is the electric energy signal input end of the resonant DC-DC converter 1; the filtered electric energy output end of the direct current filter circuit 11 is connected with the electric energy signal input end of the switch network mechanism 12; the electric energy signal output end of the switch network mechanism 12 is connected with the electric energy signal input end of the resonant network mechanism 13, and the control signal input end of the switch network mechanism 12 is the control signal input end of the resonant DC-DC converter 1; the electric energy signal output end of the resonant network mechanism 13 is connected with the electric energy signal input end of the high-frequency rectifying circuit 14; the electric energy signal output end of the high-frequency rectifying circuit 14 is connected with the electric energy signal input end of the low-pass filter circuit 15; the current and voltage signal output end of the low-pass filter circuit 15 is the current and voltage signal output end of the resonant DC-DC converter 1.
Further, the switching network mechanism 12 adopts a full-bridge or half-bridge circuit structure formed by IGBT or MOSFET switching tubes.
Further, the resonant network mechanism 13 adopts a series resonance, parallel resonance or LCL resonance structure.
Further, the high-frequency rectification circuit 14 adopts a half-bridge rectification circuit structure, a full-bridge rectification circuit structure, a combined bridge rectification circuit structure, an H-bridge chip rectification circuit structure or an H-bridge rectification circuit structure including a driving circuit, which are composed of high-frequency diodes.
Further, the processing procedure of the FPGA logic controller 8 is as follows:
the method comprises the following steps: controlling the wireless power transmission inverter power supply system to be in soft start, and presetting a control initial value;
step two: the FPGA logic controller 8 judges the working state of a primary system of the inverter power supply, wherein the working state of the primary system comprises working and standby;
step three: when the FPGA logic controller 8 judges that the working state of the inverter power supply is working, the FPGA logic controller 8 enters a PI correction link, and the PI correction link processes the acquired signal received by the FPGA logic controller 8 through a PI set value to obtain a control signal output quantity; the control signal output quantity carries out the working state judgment of the primary system in the second step again; when the FPGA logic controller 8 judges that the working state of the inverter power supply is standby, the FPGA logic controller 8 judges the working state of a secondary system of the inverter power supply, wherein the working state of the secondary system comprises working and shutdown;
step four: after the working state of the secondary system is judged, when the inverter power supply works, the FPGA logic controller 8 obtains the working signal, and carries out the working state judgment of the primary system in the second step on the working signal again, and repeats the contents from the second step to the third step; and after the working state of the secondary system is judged, when the inverter power supply is in a shutdown state, the FPGA logic controller 8 cuts off a power supply loop and finishes the logic control process.
The invention has the beneficial effects that:
1. the wireless power transmission inversion source is different from the direct DC-AC conversion commonly adopted by the traditional wireless power transmission, and adopts a DC-DC-AC inversion mode with a resonant network structure to realize soft switching, thereby avoiding a series of problems of local overheating, damage to front and rear stage circuits and the like caused by breakdown of a switching tube due to the on and off of a hard switch. Meanwhile, the stability and the safety of the power supply equipment are greatly improved, the product failure rate is effectively reduced, and the production and maintenance cost is reduced.
2. In the traditional power frequency current transformation technology, the system can not work normally and stably due to the fact that a switch is not timely in high-frequency high-power rectification, so that the traditional power frequency current transformation technology is not suitable for high-frequency high-power controllable rectification. The wireless power transmission inversion source is completely suitable for dozens of kilowatts or hundreds of kilowatts of high-frequency high-power controllable rectification of 20kHz, 20kW and the like by the PI control means of the FPGA, has the characteristics of high response speed, good control effect and the like in the high-frequency high-power controllable rectification, can realize stable and continuous energy supply required by static wireless power supply, and still has high stability with operation in the high-frequency high-power controllable rectification.
3. Aiming at wireless power transmission LCC and LCL topologies, a programmable logic device is adopted, a simple and effective control flow is applied, and the primary side control (wireless power transmitting end) effect of constant current output can be achieved under the no-load and on-load conditions of a secondary side (electric vehicle receiving end). Without complex optimization, communication and control at the secondary side (electric vehicle receiving end). The circuit structure in practical application is simplified, and potential safety hazards and electric energy efficiency loss caused by complex circuit structure are avoided.
4. Because the resonant DC-DC converter has the characteristic of low ripple, the requirement on the input rectification of an inversion source of fixed frequency electric energy output required by the wireless electric energy transmission LC resonant topology is reduced, so that the requirement on two-stage circuit interfaces can be reduced, the capacitance value of an input filter capacitor is reduced by adopting a direct connection mode between the two, the circuit structure in practical application is simplified, and the volume and the cost of a power supply system are effectively saved.
Drawings
Fig. 1 is a circuit topology structure of the wireless power transmission inverter source according to the present invention.
Fig. 2 is a control flow diagram of the wireless power transmission inverter source according to the present invention.
Fig. 3 is a main circuit topology of the resonant DC-DC converter according to the present invention.
Fig. 4 is a graph of the switching tube states (gray on, black off) and current according to the present invention.
FIG. 5 is a flow chart of FPGA control according to the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples, but the present invention is not limited to these examples.
Example 1:
the embodiment provides a wireless power transmission inversion source based on a resonant DC-DC converter, which comprises a system consisting of a switch network, a resonant network, a high-frequency rectifier, a low-frequency filter, a direct-current output acquisition circuit, an FPGA data processing circuit, an FPGA output control circuit and an inverter; the external port is reserved for connecting a direct current and a static input end of the wireless power transmission coupling mechanism, and 20kHz power output required by wireless charging of the electric automobile is provided. The system can realize a set of device for controlling electric parameters such as current, voltage and the like required by a wireless electric energy transmission transmitting end (required by a wireless electric energy transmission standard) after the wireless electric energy transmission of the electric automobile is accessed by direct current electric energy through a circuit soft switch. Specifically, the method comprises the following steps:
a wireless electric energy transmission inversion source based on a resonant DC-DC converter is disclosed, as shown in fig. 1-4, the inverter comprises a resonant DC-DC converter 1, an inverter 2, a transmitting end coupling mechanism 3, a receiving end coupling mechanism 4, a rectifying circuit 5, an output sampling circuit 6, an output acquisition AD converter 7 and an FPGA logic controller 8; the electric energy signal input end of the resonant DC-DC converter 1 is connected with a DC electric energy input; the electric energy signal output end of the resonant DC-DC converter 1 is connected with the electric energy signal input end of the inverter 2; the coupling end of the transmitting end coupling mechanism 3 is coupled and inductively connected with the coupling end of the receiving end coupling mechanism 4; the electric energy signal output end of the receiving end coupling mechanism 4 is connected with the electric energy signal input end of the rectifying circuit 5; the current and voltage signal output end of the resonant DC-DC converter 1 is correspondingly connected with the current and voltage signal input end of the output sampling circuit 6; the data signal output end of the output sampling circuit 6 is connected with the data signal input end of the output acquisition AD converter 7; the data signal output end of the output acquisition AD converter 7 is connected with the data signal input end of the FPGA logic controller 8; and the control signal output end of the FPGA logic controller 8 is connected with the control signal input end of the resonant DC-DC converter 1.
The resonant DC-DC converter 1 comprises a direct current filter circuit 11, a switch network mechanism 12 (namely a DC-DC conversion circuit), a resonant network mechanism 13, a high-frequency rectification circuit 14 and a low-pass filter circuit 15; the DC input end of the direct current filter circuit 11 is the electric energy signal input end of the resonant DC-DC converter 1; the filtered electric energy output end of the direct current filter circuit 11 is connected with the electric energy signal input end of the switch network mechanism 12; the electric energy signal output end of the switch network mechanism 12 is connected with the electric energy signal input end of the resonant network mechanism 13, and the control signal input end of the switch network mechanism 12 is the control signal input end of the resonant DC-DC converter 1; the electric energy signal output end of the resonant network mechanism 13 is connected with the electric energy signal input end of the high-frequency rectifying circuit 14; the electric energy signal output end of the high-frequency rectifying circuit 14 is connected with the electric energy signal input end of the low-pass filter circuit 15; the current and voltage signal output end of the low-pass filter circuit 15 is the current and voltage signal output end of the resonant DC-DC converter 1.
The switching network mechanism 12 is a full-bridge or half-bridge circuit structure formed by IGBT or MOSFET switching tubes, that is, a group or parallel connection ends are connected to the input end after two switching tubes are connected in series in the same direction, and the common end of the switching tube C, E is connected to the output end respectively. The resonant network mechanism 13 adopts a series resonance (the capacitor and the inductor are connected end to end in sequence), a parallel resonance (the two ends of the capacitor and the inductor are connected together respectively) or an LCL (lower control limit) resonant structure (a common node is present, a T-shaped network topology is formed) and the like, which can realize orthogonality through current and voltage phase shifting, and realize a soft switching function.
The high-frequency rectification circuit 14 adopts a half-bridge rectification circuit structure, a full-bridge rectification circuit structure, a combined bridge rectification circuit structure, an H-bridge chip rectification circuit structure or an H-bridge rectification circuit structure containing a driving circuit, which are formed by high-frequency diodes, to realize a high-frequency pulse rectification function.
The output acquisition circuit 6 comprises a current and voltage direct acquisition circuit, and is used for acquiring through isolation or adopting other electric parameter acquisition modes capable of extracting direct current output electric parameters. The direct current filter circuit 11 and the low frequency filter circuit 15 include a capacitor filter circuit, an inductor filter circuit and a circuit structure of a corresponding filter network, and realize a circuit higher harmonic filter function.
As shown in fig. 5, the processing procedure of the FPGA logic controller 8 is as follows:
the method comprises the following steps: controlling the wireless power transmission inverter power supply system to be in soft start, and presetting a control initial value;
step two: the FPGA logic controller 8 judges the working state of a primary system of the inverter power supply, wherein the working state of the primary system comprises working and standby;
step three: when the FPGA logic controller 8 judges that the working state of the inverter power supply is working, the FPGA logic controller 8 enters a PI correction link, and the PI correction link processes the acquired signal received by the FPGA logic controller 8 through a PI set value to obtain a control signal output quantity; the control signal output quantity carries out the working state judgment of the primary system in the second step again; when the FPGA logic controller 8 system judges that the working state of the inverter power supply is standby, the FPGA logic controller 8 judges the working state of a secondary system of the inverter power supply, wherein the working state of the secondary system comprises working and shutdown;
step four: after the working state of the secondary system is judged, when the inverter power supply works, the FPGA logic controller 8 obtains the working signal, and carries out the working state judgment of the primary system in the second step on the working signal again, and repeats the contents from the second step to the third step; and after the working state of the secondary system is judged, when the inverter power supply is in a shutdown state, the FPGA logic controller 8 cuts off a power supply loop and finishes the logic control process.
The working principle of the wireless power transmission inversion source in this embodiment is as follows: the direct current electric energy input reaches the current and voltage requirements required by wireless electric energy transmission after passing through the resonant DC-DC conversion circuit, and is converted into high-frequency alternating current electric energy through the inverter circuit, so that the transmitting end generates resonance. The transmitting guide rail and the receiving end transmit electric energy through magnetic field coupling. Received alternating current is converted into direct current through bridge rectification and is transmitted to an energy storage and driving element of the electric automobile, wireless electric energy transmission of the electric automobile is achieved, and the topological structure of a wireless electric energy transmission circuit of the electric automobile is shown in figure 1.
The wireless power transmission inversion source of this embodiment utilizes a set of DC-DC converter for realizing circuit soft switching current transformation by using a switch network and a resonant network, and cooperates with a subsequent inverter to realize the function of the wireless power transmission inversion source, and the basic structure is as shown in fig. 3, and includes a system formed by units such as the switch network, the resonant network, high-frequency rectification, low-frequency filtering, current/voltage sampling, high-speed AD, an FPGA logic circuit, and the inverter. The external port is reserved for the connection of a direct current access and the static input end of the wireless power transmission coupling mechanism;
the direct current output end acquires a current voltage signal and transmits the current voltage signal to an FPGA (an FPGA control flow chart is shown in figure 5) through high-speed AD conversion, the FPGA decides to output a switching tube control signal through PI control, directly controls the switching tube to act, directly chops power frequency electric energy into 20kHz electric energy and supplies the electric energy to a wireless electric energy transmission coupling mechanism;
the high-frequency pulse controls the opening and closing state, frequency and time of the switch tube. The on-off states of different switching tubes correspond to current states as shown in fig. 4, the switching tubes are alternately switched at high speed to continuously change the current, and the output current and voltage are phase-shifted by the resonant network to realize soft switching. The DC electric energy after high-frequency rectification and filtering is collected by an output end collecting circuit to obtain electric parameters, the electric parameters are compared with electric parameters provided by standards (the power level is given by the standards, and parameters such as current, voltage and the like are set according to self technology and system characteristics), and the switching time and frequency of a switching tube are controlled by a voltage-controlled oscillator and a pulse width modulation circuit, so that the purpose of controlling current transformation is achieved.
The wireless power transmission inverter power supply of the resonant DC-DC converter can realize conversion from direct current power into power meeting the existing power level (standard). And the right of converting the inversion source into an electric energy conversion mode of other output power (3.3kW, 6.6kW, 11kW, 22kW and the like) of the wireless charging electric automobile is reserved, wherein the electric energy conversion mode is converted into an SAE J2954 standard and is described in a general requirement opinion letter of an electric automobile wireless charging system.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. A wireless electric energy transmission inversion source based on a resonant DC-DC converter is characterized by comprising a resonant DC-DC converter (1), an inverter (2), a transmitting end coupling mechanism (3), a receiving end coupling mechanism (4), a rectifying circuit (5), an output sampling circuit (6), an output acquisition AD converter (7) and an FPGA logic controller (8); the electric energy signal input end of the resonant DC-DC converter (1) is connected with a DC electric energy input; the electric energy signal output end of the resonant DC-DC converter (1) is connected with the electric energy signal input end of the inverter (2); the coupling end of the transmitting end coupling mechanism (3) is coupled and inductively connected with the coupling end of the receiving end coupling mechanism (4); the electric energy signal output end of the receiving end coupling mechanism (4) is connected with the electric energy signal input end of the rectifying circuit (5); the current and voltage signal output end of the resonant DC-DC converter (1) is correspondingly connected with the current and voltage signal input end of the output sampling circuit (6); the data signal output end of the output sampling circuit (6) is connected with the data signal input end of the output acquisition AD converter (7); the data signal output end of the output acquisition AD converter (7) is connected with the data signal input end of the FPGA logic controller (8); the control signal output end of the FPGA logic controller (8) is connected with the control signal input end of the resonant DC-DC converter (1); the resonant DC-DC converter (1) comprises a direct current filter circuit (11), a switch network mechanism (12), a resonant network mechanism (13), a high-frequency rectification circuit (14) and a low-pass filter circuit (15); the DC input end of the direct current filter circuit (11) is connected with the electric energy signal input end of the resonant DC-DC converter (1); the filtered electric energy output end of the direct current filter circuit (11) is connected with the electric energy signal input end of the switch network mechanism (12); the electric energy signal output end of the switch network mechanism (12) is connected with the electric energy signal input end of the resonant network mechanism (13), and the control signal input end of the switch network mechanism (12) is the control signal input end of the resonant DC-DC converter (1); the electric energy signal output end of the resonant network mechanism (13) is connected with the electric energy signal input end of the high-frequency rectifying circuit (14); the electric energy signal output end of the high-frequency rectifying circuit (14) is connected with the electric energy signal input end of the low-pass filtering circuit (15); the current and voltage signal output end of the low-pass filter circuit (15) is the current and voltage signal output end of the resonant DC-DC converter (1); the processing process of the FPGA logic controller (8) is as follows:
the method comprises the following steps: controlling the wireless power transmission inverter power supply system to be in soft start, and presetting a control initial value;
step two: the FPGA logic controller (8) judges the working state of a primary system of the inverter power supply, wherein the working state of the primary system comprises working and standby;
step three: when the FPGA logic controller (8) judges that the working state of the inverter power supply is working, the FPGA logic controller (8) enters a PI correction link, and the PI correction link processes the acquired signal received by the FPGA logic controller (8) through a PI set value to obtain a control signal output quantity; the control signal output quantity carries out the working state judgment of the primary system in the second step again; when the FPGA logic controller (8) judges that the working state of the inverter power supply is standby, the FPGA logic controller (8) judges the working state of a secondary system of the inverter power supply, wherein the working state of the secondary system comprises working and shutdown;
step four: after the working state of the secondary system is judged, when the state of the inverter power supply is working, the FPGA logic controller (8) obtains the working signal, and carries out the working state judgment of the primary system in the second step on the working signal again, and repeats the contents from the second step to the third step; and when the working state of the secondary system is judged and the inverter power supply is in a shutdown state, the FPGA logic controller (8) cuts off a power supply loop and ends the logic control process.
2. The wireless power transmission inversion source of claim 1, wherein the switch network mechanism (12) is a full-bridge or half-bridge circuit structure formed by IGBT or MOSFET switching tubes.
3. The wireless power transmission inversion source of claim 1, wherein the resonant network mechanism (13) employs a series resonance, parallel resonance or LCL resonance structure.
4. The wireless power transmission inverter source according to claim 1, wherein the high-frequency rectification circuit (14) is a half-bridge rectification circuit structure, a full-bridge rectification circuit structure, a combined bridge rectification circuit structure, an H-bridge chip rectification circuit structure or an H-bridge rectification circuit structure including a driving circuit, which are composed of high-frequency diodes.
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