CN110492767B - Wireless power transmission inversion source based on six-pulse wave controllable rectification - Google Patents
Wireless power transmission inversion source based on six-pulse wave controllable rectification Download PDFInfo
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
- H02M7/2195—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration the switches being synchronously commutated at the same frequency of the AC input voltage
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- Engineering & Computer Science (AREA)
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- Inverter Devices (AREA)
Abstract
The invention provides a wireless power transmission inversion source based on six-pulse wave controllable rectification, and belongs to the technical field of wireless power transmission of rail-mounted electric vehicles. The inversion source comprises a six-pulse current transformation switch network, an output acquisition circuit, an FPGA data processing circuit and an FPGA output control circuit; 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 six-pulse wave controllable rectification, and belongs to the technical field of wireless power transmission of rail-mounted electric vehicles.
Background
At present, the problem of charging infrastructure on the ground often exists in the development of rail-mounted electric vehicles, and as the contact type charging electrode is exposed outside, the natural weathering corrosion speed is high, and the problems of electric arcs and carbon deposition possibly exist, the rail-mounted electric vehicles need to be regularly cleaned, maintained and overhauled by personnel, and certain influence is exerted on the safety of production life and maintenance personnel. Meanwhile, the charging speed and the pneumatic appearance of the rail transit vehicle are limited by the contact charging principle, so that the speed of the rail transit vehicle is not convenient to increase.
Disclosure of Invention
The invention provides a wireless power transmission inversion source based on six-pulse wave controllable rectification, aiming at solving the problems of difficult maintenance and the like of the existing contact type charging electrode, and the adopted technical scheme is as follows:
a wireless electric energy transmission inversion source based on six-pulse wave controllable rectification comprises a multi-pulse variable current switch network mechanism 1, a transmitting end coupling mechanism 2, a receiving end coupling mechanism 3, a rectifying circuit 4, an output acquisition circuit 5, an output acquisition signal AD conversion circuit 6 and an FPGA logic controller 7; the AC electric energy signal input end of the multi-pulse current transformation switch network mechanism 1 is connected with a 380VAC electric energy signal end; the 20kHz AC electric energy signal output end of the multi-pulse current transformation switch network mechanism 1 is connected with the electric energy signal input end of the transmitting end coupling mechanism 2; the coupling end of the transmitting end coupling mechanism 2 is coupled and inductively connected with the coupling end of the receiving end coupling mechanism 3; the electric energy signal output end of the receiving end coupling mechanism 3 is connected with the electric energy signal input end of the rectifying circuit 4; the electric energy output end of the rectification circuit 4 is the direct current electric energy output end of the wireless electric energy transmission inverter power supply; the 20kHz AC electric energy signal output end of the multi-pulse current transformation switch network mechanism 1 is connected with the acquisition signal input end of the output acquisition circuit 5; the acquisition signal output end of the output acquisition circuit 5 is connected with the conversion signal input end of the output acquisition signal AD conversion circuit 6; the conversion signal output end of the output acquisition signal AD conversion circuit 6 is connected with the output signal acquisition data input end of the FPGA logic controller 7; and the control signal output end of the FPGA logic controller 7 is connected with the control signal input end of the multi-pulse current transformation switch network mechanism 1.
Further, the multi-pulse variable current switch network mechanism 1 adopts a multi-pulse controllable rectifying circuit structure.
Further, the multi-pulse variable current switch network mechanism 1 is an n-group 6-pulse controllable rectifying circuit structure, wherein n is an integer greater than or equal to 1.
Furthermore, the n groups of 6-pulse controllable rectifying circuit structures comprise n groups of 6-pulse variable current switch networks and n groups of phase shift networks, wherein the phase angle between each group of phase shift networks is
Furthermore, the 6-pulse controllable rectifying circuit structure adopts a full-bridge circuit structure formed by IGBT or MOSFET switching tubes; the IGBT or MOSFET switching tubes are connected in parallel after being connected in series in the same direction, CE common ends of the IGBT or MOSFET switching tubes are respectively connected with the input, and the parallel connection ends of the IGBT or MOSFET switching tubes are connected with the output.
Further, the processing procedure of the FPGA logic controller 7 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 7 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 7 judges that the working state of the inverter power supply is working, the FPGA logic controller 7 enters a PI correction link, and the PI correction link processes the acquired signal received by the FPGA logic controller 7 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 7 judges that the working state of the inverter power supply is standby, the FPGA logic controller 7 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 7 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 7 cuts off a power supply loop and ends the logic control process.
The invention has the beneficial effects that:
1. the wireless power transmission inversion source based on six-pulse wave controllable rectification directly converts power frequency into an electric energy form required by a wireless power transmission transmitting end by adopting a multi-pulse controllable rectification mode, and greatly reduces electric energy loss compared with a traditional conversion mode under the same power level (MW level). The wireless power transmission inversion source is simple and clear in structure due to the adoption of the six-pulse controllable rectification structure, is suitable for high-power rail transit, can greatly reduce the use and network complexity of a switching tube and a phase-shifting circuit, and greatly saves cost and maintenance cost.
2. According to the wireless power transmission inversion source based on six-pulse wave controllable rectification, due to the fact that the wireless power transmission LC resonance topological structure has the characteristic of low ripple waves, the multi-pulse converter for wireless charging of the rail-mounted electric vehicle has a good six-pulse rectification effect. The structure of the wireless power transmission inversion source based on six-pulse wave controllable rectification avoids the problems of high voltage and large current of a main loop, further avoids the great reduction of system efficiency and the generation of a large amount of heat caused by the addition of an additional energy storage element, and greatly reduces the power loss and the generation of heat. Meanwhile, the structure of the wireless power transmission inversion source based on six-pulse wave controllable rectification reduces the use of energy storage elements, further reduces the potential safety hazard of a power supply system, improves the safety and stability of the system, and facilitates the miniaturization of the system. In addition, compared with more complex inverter source topological structures such as 12-pulse controllable rectification, 18-pulse controllable rectification, 24-pulse controllable rectification and the like, the structure of the wireless power transmission inverter source based on six-pulse controllable rectification has the characteristic of low decoupling difficulty, and the problem that the coils of the traditional inverter source can be mutually coupled to cause the system order to be too high and cannot be decoupled through the prior art is completely solved. This improvement both reduces cost and increases system reliability.
3. The transmitting end of the wireless electric energy transmission inversion source based on six-pulse wave controllable rectification adopts single-stage energy transmission, and compared with the prior art which usually adopts two-stage structures of AC-DC and DC-AC, the transmitting end of the wireless electric energy transmission inversion source based on six-pulse wave controllable rectification directly converts power frequency into an electric energy form required by the transmitting end of the wireless electric energy transmission, reduces ohmic loss and improves the system efficiency by 5-10%; front-end redundancy mechanisms are reduced. The reduction of ohmic loss not only effectively improves the system safety and the integration level, but also has remarkable effects on energy conservation and emission reduction and the improvement of the overall efficiency of the system.
4. In the traditional power frequency converter 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 converter technology is not suitable for the high-frequency high-power converter technology. The wireless power transmission inversion source based on six-pulse wave controllable rectification is subjected to PI control based on the FPGA, has high response speed and good control effect, and has extremely high working stability under the working conditions of high frequency and low ripple waves required by a fixed track type electric vehicle. Meanwhile, when high-power output and standby stations are switched, transition is smooth and stable.
5. The wireless power transmission inversion source based on six-pulse wave controllable rectification adopts a programmable logic device, applies a simple and effective control flow, and can achieve the effect of primary side control (wireless power transmitting end) of constant current output under the conditions of no load and load of a secondary side (electric vehicle receiving end) aiming at wireless power transmission LCC and LCL topologies. Without complex optimization, communication and control at the secondary side (electric vehicle receiving end). The fault tolerance of the rail transit is improved, the configuration of rail vehicles is reduced, the space is saved, and the loading capacity of the vehicles is improved.
6. The wireless power transmission inversion source based on six-pulse wave controllable rectification can improve the driving range of the vehicle, greatly reduce the number of vehicle-mounted power batteries and greatly reduce the use cost of the vehicle.
Drawings
Fig. 1 is a block diagram of the overall structure of the system of the wireless power transmission inverter source according to the present invention.
Fig. 2 is a block diagram of a system control flow of the wireless power transmission inverter source according to the present invention.
Fig. 3 is a flow chart of the FPGA control of the wireless power transmission inverter source according to the present invention.
Fig. 4 shows a relationship between a switching angle of a switching tube of the wireless power transmission inverter source and an output pulse waveform.
Fig. 5 is a first three-phase current gating diagram of the wireless power transmission inversion source.
Fig. 6 is a second three-phase current gating diagram of the wireless power transmission inversion source.
Fig. 7 is a three-phase current gating diagram of the wireless power transmission inversion source.
Fig. 8 is a diagram of a first principle (positive and negative phase output currents) of the inverter of the wireless power transmission inversion source.
Fig. 9 is a diagram ii of the inverter principle (positive and negative phase output currents) of the wireless power transmission inversion source of the 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:
a wireless electric energy transmission inversion source based on six-pulse wave controllable rectification is shown in figures 1 and 2, and comprises a multi-pulse variable current switch network mechanism 1, a transmitting end coupling mechanism 2, a receiving end coupling mechanism 3, a rectifying circuit 4, an output acquisition circuit 5, an output acquisition signal AD conversion circuit 6 and an FPGA logic controller 7; the AC electric energy signal input end of the multi-pulse current transformation switch network mechanism 1 is connected with a 380V AC electric energy signal end; the 20kHz AC electric energy signal output end of the multi-pulse current transformation switch network mechanism 1 is connected with the electric energy signal input end of the transmitting end coupling mechanism 2; the coupling end of the transmitting end coupling mechanism 2 is coupled and inductively connected with the coupling end of the receiving end coupling mechanism 3; the electric energy signal output end of the receiving end coupling mechanism 3 is connected with the electric energy signal input end of the rectifying circuit 4; the electric energy output end of the rectification circuit 4 is the direct current electric energy output end of the wireless electric energy transmission inverter power supply; the 20kHz AC electric energy signal output end of the multi-pulse current transformation switch network mechanism 1 is connected with the acquisition signal input end of the output acquisition circuit 5; the acquisition signal output end of the output acquisition circuit 5 is connected with the conversion signal input end of the output acquisition signal AD conversion circuit 6; the conversion signal output end of the output acquisition signal AD conversion circuit 6 is connected with the output signal acquisition data input end of the FPGA logic controller 7; and the control signal output end of the FPGA logic controller 7 is connected with the control signal input end of the multi-pulse current transformation switch network mechanism 1. The output acquisition circuit 5 comprises a current and voltage direct acquisition mode, a mutual inductor or Hall element acquisition mode and other electric parameter acquisition modes capable of extracting frequency information.
The multi-pulse variable current switch network mechanism 1 adopts a multi-pulse controllable rectifying circuit structure, namely the multi-pulse variable current switch network mechanism 1 is of an n-group 6-pulse controllable rectifying circuit structure, wherein n is an integer greater than or equal to 1.
The n groups of 6-pulse controllable rectifying circuit structures comprise n groups of 6-pulse variable current switch networks and n groups of phase shift networks, wherein the phase angle between each group of phase shift networks is
The 6-pulse controllable rectifying circuit structure adopts a full-bridge circuit structure formed by IGBT or MOSFET switching tubes; the IGBT or MOSFET switching tubes are connected in parallel after being connected in series in the same direction, and the CE of the IGBT or MOSFET switching tubes is publicThe common ends are respectively connected with the input, and the parallel connection ends of the IGBT or MOSFET switching tubes are connected with the output.
As shown in fig. 3, the processing procedure of the FPGA logic controller 7 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 7 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 7 judges that the working state of the inverter power supply is working, the FPGA logic controller 7 enters a PI correction link, and the PI correction link processes the acquired signal received by the FPGA logic controller 7 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 7 judges that the working state of the inverter power supply is standby, the FPGA logic controller 7 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 7 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 7 cuts off a power supply loop and ends the logic control process.
The wireless power transmission inversion source with six-pulse controllable rectification can realize the conversion of commercial power to 20 kHz. The inverted source is converted into an electric energy conversion mode of SAE J2954 standard, general requirement suggestion letter of electric vehicle wireless charging system, other characteristic frequency (such as 85kHz) and corresponding output power (3.3kW, 6.6kW, 11kW, 22kW and the like) of the wireless charging electric vehicle.
The six-pulse controllable rectification wireless power transmission inversion source realizes that a high-power rail vehicle wireless power transmission system is directly converted into high-frequency power from power frequency, namely, a set of wireless power transmission inversion source designed in a six-pulse controllable rectification mode comprises a six-pulse variable current switch network, an output acquisition circuit, an FPGA data processing circuit and an FPGA output control circuit; the external port is reserved for three-phase power frequency access and wireless power transmission fixed track side coupling mechanism end output, and 20kHz power output required by wireless charging of the electric automobile is provided. The basic principle is a set of devices which carry out six-pulse controllable rectification on switch network control, output electric energy is output through an acquisition circuit and FPGA preset control logic, and high-speed switching of a switch tube is controlled through pulse width modulation, so that power frequency electric energy is converted into high-frequency (20kHz) electric energy required by wireless electric energy transmission.
The overall system working principle is as follows: the power frequency electric energy is converted into alternating current with required frequency (20kHz) through a six-pulse current conversion switch network, so that the transmitting end generates resonance. The transmitting guide rail and the receiving end transmit 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 a circuit topological structure is shown in figure 1. The wireless power transmission inversion source of the embodiment converts low-frequency electric energy (50Hz) into required high-frequency electric energy through a six-pulse current transformation switch network, outputs the electric energy for sampling, and sends the electric energy to an FPGA (an FPGA control flow chart is shown in figure 3) through high-speed AD conversion, the FPGA controls a decision output switch tube control signal through PI (proportional-integral) control, directly controls the action of the switch tube, directly chops the power frequency electric energy to form 20kHz electric energy, and supplies the electric energy to a wireless power transmission coupling mechanism. The output is sampled, AD converted, logic processed, the signal is output, and the switching tube forms closed-loop control (see figure 2, system control flow chart). The high-frequency pulse controls the opening and closing state, frequency and time of the switch tube. The open and close states of different switch tubes correspond to the current state of the circuit, as shown in fig. 4, the switch tubes alternately switch at high speed to continuously change the current direction, so that the electric energy is converted into a high-frequency form.
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 (5)
1. A wireless electric energy transmission inverter power supply based on six-pulse wave controllable rectification is characterized in that the power supply comprises a multi-pulse variable current switch network mechanism (1), a transmitting end coupling mechanism (2), a receiving end coupling mechanism (3), a rectifying circuit (4), an output acquisition circuit (5), an output acquisition signal AD conversion circuit (6) and an FPGA logic controller (7); the AC electric energy signal input end of the multi-pulse current transformation switch network mechanism (1) is connected with a 380VAC electric energy signal end; the 20kHz AC electric energy signal output end of the multi-pulse current transformation switch network mechanism (1) is connected with the electric energy signal input end of the transmitting end coupling mechanism (2); the coupling end of the transmitting end coupling mechanism (2) is coupled and inductively connected with the coupling end of the receiving end coupling mechanism (3); the electric energy signal output end of the receiving end coupling mechanism (3) is connected with the electric energy signal input end of the rectifying circuit (4); the electric energy output end of the rectifying circuit (4) is the direct current electric energy output end of the wireless electric energy transmission inverter power supply; the 20kHz AC electric energy signal output end of the multi-pulse current transformation switch network mechanism (1) is connected with the acquisition signal input end of the output acquisition circuit (5); the acquisition signal output end of the output acquisition circuit (5) is connected with the conversion signal input end of the output acquisition signal AD conversion circuit (6); the conversion signal output end of the output acquisition signal AD conversion circuit (6) is connected with the output signal acquisition data input end of the FPGA logic controller (7); the control signal output end of the FPGA logic controller (7) is connected with the control signal input end of the multi-pulse current-changing switch network mechanism (1);
the processing process of the FPGA logic controller (7) 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 (7) 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 (7) judges that the working state of the inverter power supply is working, the FPGA logic controller (7) enters a PI correction link, and the PI correction link processes the acquired signal received by the FPGA logic controller (7) 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 (7) judges that the working state of the inverter power supply is standby, the FPGA logic controller (7) 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 (7) 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 (7) cuts off a power supply loop and ends the logic control process.
2. The wireless power transmission inverter power supply according to claim 1, wherein the multi-pulse variable current switch network mechanism (1) adopts a multi-pulse controllable rectifier circuit structure.
3. The wireless power transmission inverter power supply according to claim 1 or 2, wherein the multi-pulse variable current switch network mechanism (1) is a 6-pulse controllable rectifying circuit structure of n groups, wherein n is an integer greater than or equal to 1.
4. The wireless power transmission inverter according to claim 3, wherein the n groups of 6-pulse controllable rectification circuit structures comprise n groups of 6-pulse variable current switch networks and n groups of phase shift networks, wherein a phase angle between each group of phase shift networks is
5. The wireless power transmission inverter power supply according to claim 4, wherein the 6-pulse controllable rectifying circuit structure adopts a full-bridge circuit structure formed by IGBT or MOSFET switching tubes; the IGBT or MOSFET switching tubes are connected in parallel after being connected in series in the same direction, CE common ends of the IGBT or MOSFET switching tubes are respectively connected with the input, and the parallel connection ends of the IGBT or MOSFET switching tubes are connected with the output.
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