CN112491157B - A kind of dynamic wireless power supply equipment multi-receiver module SIPO circuit topology control method - Google Patents
A kind of dynamic wireless power supply equipment multi-receiver module SIPO circuit topology control method Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
- H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
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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
- H02M3/33576—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 having at least one active switching element at the secondary side of an isolation transformer
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Dc-Dc Converters (AREA)
Abstract
本发明提供了电动汽车大功率动态无线供电系统接收端多模块SIPO电路拓扑及控制方法，所述电路拓扑结构具体包括磁耦合机构和补偿拓扑，接收端电能变换器和负载；所述磁耦合机构和补偿拓扑与接收端电能变换器相连接，接收端电能变换器与负载相连接；所述接收端电能变换器分为两个电能变换模块，每个电能变换模块均由H桥，变压器和可控整流电路顺次串联构成；本发明应用于电动汽车，自动导引车，轨道交通等对象的动态无线供电领域；双接收端变换器磁路独立，输出侧的整流电路可控，双模块协同控制输出功率，电能输出侧两组并联可控整流电路可以独立工作，在不同功率下高效率运行，系统的扩展能力和鲁棒性强。
The invention provides a multi-module SIPO circuit topology and a control method at a receiving end of a high-power dynamic wireless power supply system for an electric vehicle. The circuit topology structure specifically includes a magnetic coupling mechanism and a compensation topology, a receiving end power converter and a load; the magnetic coupling mechanism The compensation topology is connected with the receiving end power converter, and the receiving end power converter is connected with the load; the receiving end power converter is divided into two power conversion modules, and each power conversion module is composed of an H-bridge, a transformer and a switch. The control and rectification circuits are formed in series in sequence; the invention is applied to the field of dynamic wireless power supply for electric vehicles, automatic guided vehicles, rail transit and other objects; the magnetic circuit of the dual receiving end converters is independent, the rectification circuit at the output side is controllable, and the dual modules cooperate with each other. To control the output power, the two parallel controllable rectifier circuits on the power output side can work independently and operate with high efficiency under different powers, and the system has strong scalability and robustness.
Description
Technical Field
The invention relates to the field of wireless power supply, in particular to a multi-module SIPO circuit topology and a control method for a receiving end of a high-power dynamic wireless power supply system of an electric automobile.
Background
The scheme of the energy conversion circuit at the receiving end of the high-power dynamic wireless power supply system on the market generally has the following problems:
1. the basic structure of the dynamic wireless power supply system is shown in fig. 1, and the dynamic wireless power supply system is divided into a primary side system (ground part) and a secondary side system (vehicle-mounted part). In high power applications, the induced voltage output by the secondary wireless power transmission technology system is usually high enough to meet the requirements of transmission power and efficiency. However, due to the voltage stress threshold and cost limitations of power electronics, the input voltage of the secondary power management section is generally limited to a certain range.
2. Fig. 2 shows two typical secondary energy management circuit structures applied in a high-power wireless power supply system, in which an IGBT or a power MOSFET is generally used as a switching device in a DC-DC conversion module in fig. 2(a), a controllable rectification module is used as a main module of an energy management circuit in fig. 2(b), and a MOSFET is generally used as a switching device. Due to the limitation of the existing manufacturing technology, the power capacity and the frequency of the two devices are cross-limited, and the high-power and high-efficiency energy output of the electric automobile cannot be realized.
3. In the dynamic wireless power supply system, because the position of the primary coil and the secondary coil changes in real time along with the movement of the vehicle, the voltage fluctuation of the secondary coupling is large, and therefore the high-frequency rectifying module has wide-range electric energy input requirements. Under the same output power level, the lower the input voltage that the high-frequency rectification input can bear, the larger the average current that runs in the receiving end coil, which is not favorable for improving the transmission efficiency of the system, nor favorable for the lightening and miniaturization of the receiving end coil, and the worse the safety and economy are even when the receiving end coil runs for a long time.
Disclosure of Invention
The invention aims to solve the problems of low transmission efficiency, overlarge receiving end module, poor safety and economy and the like of the conventional dynamic wireless power supply system of objects such as electric automobiles, Automatic Guided Vehicles (AGV), rail transit and the like, and provides a receiving end multi-module SIPO circuit of a high-power dynamic wireless power supply system of an electric automobile and a control method thereof.
The invention is realized by the following technical scheme, the invention provides a multi-module SIPO circuit topology at the receiving end of a high-power dynamic wireless power supply system of an electric automobile, wherein the SIPO circuit is a secondary side energy management circuit with serial input and parallel output based on a controllable rectifying circuit; the circuit topological structure specifically comprises a magnetic coupling mechanism, a compensation topology, a receiving end electric energy converter and a load; the magnetic coupling mechanism and the compensation topology are connected with a receiving end electric energy converter, and the receiving end electric energy converter is connected with a load; the receiving end electric energy converter comprises a first group of electric energy conversion modules and a second group of electric energy conversion modules, wherein the first group of electric energy conversion modules comprise an H bridge, a transformer and a controllable rectifying circuit unit; the H bridge is connected with a transformer, the transformer is connected with the controllable rectifying circuit unit, and the second group of electric energy conversion modules and the first group of electric energy conversion modules are identical in structure.
Further: h bridges in the first group of electric energy conversion modules and H bridges in the second group of electric energy conversion modules are connected in series, each group of H bridges in the two groups of serially connected H bridges comprises 4 IGBT tubes, and the 4 IGBT tubes are H-shaped.
Further: each controllable rectifying unit comprises two IGBT tubes and a capacitor; one end of the capacitor is connected with the transformer, the other end of the capacitor is connected with the two IGBT tubes which are connected in parallel, and the other ends of the IGBT tubes are connected with the transformer.
Further: the load is an electric automobile battery or a battery and a motor.
Further: the magnetic coupling mechanism is an inductor wound by a coil; the compensation topology consists of capacitance or inductance and capacitance.
The invention also provides a control method of the multi-module SIPO circuit topology applied to the receiving end of the high-power dynamic wireless power supply system of the electric automobile, wherein the electric energy received by the resonance coil is input into the electric energy converter through two paths of series-connected full-bridge circuits; the input sides of the two receiving ends are simultaneously conducted by adjusting the two groups of receiving end electric energy conversion modules to simultaneously turn on one group of IGBT, and at the moment, the four IGBTs share the output voltage stress of the receiving ends, so that the input upper limit of the voltage of the receiving ends is doubled; the control method comprises a working state under a heavy-load working condition and a working state under a light-load working condition; and the two groups of electric energy conversion modules are simultaneously switched on in the working state under the heavy-load working condition, and only one group of electric energy conversion modules is switched on in the working state under the light-load working condition.
Further, under the heavy-load working condition, the working state is divided into two working states:
(1) operating State 1, PWM1 is at Low PowerWhen the PWM2 is at high level, the IGBT tube S in the first group of electric energy conversion modules2、S3、S5Conduction, S1、S4、S6Turning off; IGBT tube S in second group of electric energy conversion modules8、S9、S11Conduction, S7、S10、S12Turning off;
(2) in the working state 2, the PWM1 is at a high level, the PWM2 is at a low level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules8、S9、S11Off, S7、S10、S12And conducting.
Further, under the light load working condition, the working state is divided into two working states:
(1) in the working state 3, the PWM1 is at a high level, the PWM2 is at a low level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules8、S9Conduction, S7、S10、S12、S11All the modules are turned off, and the second group of electric energy conversion modules do not output;
(2) in the working state 4, the PWM1 is at a high level, the PWM2 is at a low level, and the IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules7、S10Conduction, S12、S8、S9、S11And the second group of electric energy conversion modules do not output.
Drawings
Fig. 1 is a schematic diagram of a basic structure of a dynamic wireless power supply system in the prior art;
FIG. 2 is a diagram of two typical prior art secondary side energy management circuits; wherein (a) is a secondary side energy management circuit structure using a DC-DC module, and (b) is a secondary side energy management circuit structure using a DC-DC module;
FIG. 3 is a schematic diagram of a SIPO secondary side energy management structure based on a controllable rectification circuit;
FIG. 4 is a schematic diagram of a heavy duty operation of the SIPO;
FIG. 5 is a schematic view of a light load operation state of the SIPO;
fig. 6 shows two operating states of the IGBT under a heavy load operating state, where (a) is operating state 1 and (b) is operating state 2;
FIG. 7 is a graph of input current, PWM control signal and no-load voltage under a heavy duty operating condition;
fig. 8 shows two operating states of the IGBT tube in a light load operating state, where (a) is operating state 3 and (b) is operating state 4;
fig. 9 is a diagram of input current, PWM control signal and no-load voltage in a light load operating state.
Detailed Description
The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiment of the present invention. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that it will be apparent to those skilled in the art that numerous variations and modifications can be made without departing from the present concepts and the claimed embodiments may be practiced without such inventive faculty. All falling within the scope of the present invention.
The invention aims to solve the problems of low transmission efficiency, overlarge receiving end module, poor safety and economy and the like of a dynamic wireless power supply system of an electric automobile, an Automatic Guided Vehicle (AGV), a rail transit and other objects at present, and provides a receiving end multi-module SIPO circuit of a high-power dynamic wireless power supply system of the electric automobile and a control method thereof.
Wherein the high power refers to the application environment in the power range of 20kW-200 kW.
With reference to fig. 1 to 9, the present invention is realized by the following technical solutions, and the present invention proposes: the receiving end multi-module SIPO circuit topology of the high-power dynamic wireless power supply system of the electric automobile is a secondary side energy management circuit with input in series and output in parallel based on a controllable rectification circuit; the circuit topological structure specifically comprises a magnetic coupling mechanism, a compensation topology, a receiving end electric energy converter and a load; the magnetic coupling mechanism and the compensation topology are connected with a receiving end electric energy converter, and the receiving end electric energy converter is connected with a load; the receiving end electric energy converter comprises a first group of electric energy conversion modules and a second group of electric energy conversion modules, wherein the first group of electric energy conversion modules comprise an H bridge, a transformer and a controllable rectifying circuit unit; the H bridge is connected with a transformer, the transformer is connected with the controllable rectifying circuit unit, and the second group of electric energy conversion modules and the first group of electric energy conversion modules are identical in structure.
H bridges in the first group of electric energy conversion modules and H bridges in the second group of electric energy conversion modules are connected in series, each group of H bridges in the two groups of serially connected H bridges comprises 4 IGBT tubes, and the 4 IGBT tubes are H-shaped.
Each controllable rectifying unit comprises two IGBT tubes and a capacitor; one end of the capacitor is connected with the transformer, the other end of the capacitor is connected with the two IGBT tubes which are connected in parallel, and the other ends of the IGBT tubes are connected with the transformer.
The load is an electric automobile battery or a battery and a motor. The magnetic coupling mechanism is an inductor wound by a coil; the compensation topology is composed of a capacitor or an inductor and a capacitor.
The invention also provides a control method of the multi-module SIPO circuit topology at the receiving end of the high-power dynamic wireless power supply system of the electric automobile, wherein the electric energy received by the resonance coil is input into the electric energy converter through two paths of series-connected full-bridge circuits; the input sides of the two receiving ends are simultaneously conducted by adjusting the two groups of receiving end electric energy conversion modules to simultaneously turn on one group of IGBT, and at the moment, the four IGBTs share the output voltage stress of the receiving ends, so that the input upper limit of the voltage of the receiving ends is doubled; and when the inverter bridge runs at the full duty ratio, the switching device is in a soft switching state, and the inverter efficiency is high.
However, because the receiving end outputs a voltage threshold range and current (power) requirements, the receiving end output side adopts a parallel output structure, and the charging current capability of the receiving end is increased. The output power is controlled by controlling the controllable rectifying circuit on the output side.
Meanwhile, the double-receiving-end converter has independent magnetic circuits, can control the output power respectively, increases the control flexibility of the output power, effectively improves the power regulation range of a receiving end, and has higher safety and fault tolerance (redundancy). And the double-module cooperative control is carried out on the top layer, so that the expansion capability and the robustness of the system can be further improved.
The control method comprises a working state under a heavy-load working condition and a working state under a light-load working condition; and the two groups of controllable rectifying units are simultaneously switched on in the working state under the heavy-load working condition, and only one group of controllable rectifying units is switched on in the working state under the light-load working condition.
As shown in fig. 4, two groups of controllable rectification outputs are switched on under a heavy load working condition, and high-efficiency operation under high power is realized under low switching loss; the electric energy input side is two groups of IGBT tubes connected in series, the two groups of controllable rectifying circuits connected in parallel and outputting at the output side can work independently, the two paths of controllable rectifying circuits at the output side control the output power respectively, and the optimized operation under different power grades can be realized.
Fig. 6 shows two typical working states under a heavy-load working condition of the system, and the output current is always the current in the same direction by controlling the IGBT tube timing sequence to charge the battery load. And meanwhile, the output power control is realized by performing controllable rectification through PWM.
(1) In the working state 1, the PWM1 is at a low level, the PWM2 is at a high level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Conduction, S1、S4、S6Turning off; IGBT tube S in second group of electric energy conversion modules8、S9、S11Conduction, S7、S10、S12Turning off;
(2) in the working state 2, the PWM1 is at a high level, the PWM2 is at a low level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules8、S9、S11Off, S7、S10、S12And conducting.
As shown in fig. 5, only one set of controllable rectification output is turned on under a light load condition, so that the output efficiency is improved.
Fig. 8 shows another two typical operating states of the power conversion module under independent operation when only one group of modules outputs power under light load condition:
(1) in the working state 3, the PWM1 is at a high level, the PWM2 is at a low level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules8、S9Conduction, S7、S10、S12、S11All the modules are turned off, and the second group of electric energy conversion modules do not output;
(2) in the working state 4, the PWM1 is at a high level, the PWM2 is at a low level, and the IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules7、S10Conduction, S12、S8、S9、S11And the second group of electric energy conversion modules do not output.
The invention provides a multi-module SIPO circuit topology and a control method at a receiving end of an electric automobile high-power dynamic wireless power supply system, which are introduced in detail, wherein the principle and the implementation mode of the invention are explained, and the above explanation is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (6)
1. A control method for dynamic wireless power supply equipment multi-receiving end module SIPO circuit topology is characterized in that: the SIPO circuit is a secondary side energy management circuit with serial input and parallel output based on a controllable rectification circuit; the circuit topological structure specifically comprises a magnetic coupling mechanism, a compensation topology, a receiving end electric energy converter and a load; the magnetic coupling mechanism and the compensation topology are connected with a receiving end electric energy converter, and the receiving end electric energy converter is connected with a load; the receiving end electric energy converter comprises a first group of electric energy conversion modules and a second group of electric energy conversion modules, wherein the first group of electric energy conversion modules comprise an H bridge, a transformer and a controllable rectifying circuit unit; the H bridge is connected with a transformer, the transformer is connected with the controllable rectifying circuit unit, and the second group of electric energy conversion modules and the first group of electric energy conversion modules have the same structure;
the H-bridge in the first group of electric energy conversion modules and the H-bridge in the second group of electric energy conversion modules are connected in series, each H-bridge in the two groups of H-bridges connected in series comprises 4 IGBT tubes, and the 4 IGBT tubes form an H type;
the electric energy received by the resonance coil is input into the electric energy converter through two paths of H bridges connected in series; the input sides of the two receiving ends are simultaneously conducted by adjusting the two groups of receiving end electric energy conversion modules to simultaneously turn on one group of IGBT, and at the moment, the four IGBTs share the output voltage stress of the receiving ends, so that the input upper limit of the voltage of the receiving ends is doubled; the control method comprises a working state under a heavy-load working condition and a working state under a light-load working condition; and the two groups of electric energy conversion modules are simultaneously switched on in the working state under the heavy-load working condition, and only one group of electric energy conversion modules is switched on in the working state under the light-load working condition.
2. The control method according to claim 1, characterized in that: each controllable rectifying circuit unit comprises two IGBT tubes and a capacitor; one end of the capacitor is connected with the transformer, the other end of the capacitor is connected with the two IGBT tubes which are connected in parallel, and the other ends of the two IGBT tubes are connected with the transformer.
3. The control method according to claim 1, characterized in that: the load is an electric automobile battery or a battery and a motor.
4. The control method according to claim 1, characterized in that: the magnetic coupling mechanism is an inductor wound by a coil; the compensation topology is composed of a capacitor or an inductor and a capacitor.
5. The control method according to claim 1, characterized in that under heavy load conditions, two operating states are distinguished:
(1) in the working state 1, the PWM1 is at a low level, the PWM2 is at a high level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Conduction, S1、S4、S6Turning off; IGBT tube S in second group of electric energy conversion modules8、S9、S11Conduction, S7、S10、S12Turning off;
(2) in the working state 2, the PWM1 is at a high level, the PWM2 is at a low level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules8、S9、S11Off, S7、S10、S12And conducting.
6. The control method according to claim 1, characterized in that under light load conditions, two operating states are distinguished:
(1) in the working state 3, the PWM1 is at a high level, the PWM2 is at a low level, and an IGBT tube S in the first group of electric energy conversion modules2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules8、S9Conduction, S7、S10、S12、S11All the modules are turned off, and the second group of electric energy conversion modules do not output;
(2) in the working state 4, the PWM1 is at a high level, the PWM2 is at a low level, and the IGBTs in the first group of power conversion modulesPipe S2、S3、S5Off, S1、S4、S6Conducting; IGBT tube S in second group of electric energy conversion modules7、S10Conduction, S12、S8、S9、S11And the second group of electric energy conversion modules do not output.
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| CN202011270861.3A CN112491157B (en) | 2020-11-13 | 2020-11-13 | A kind of dynamic wireless power supply equipment multi-receiver module SIPO circuit topology control method |
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