CN112491155B - Multi-module SIPO circuit topology of receiving end of magnetic parallel type electric automobile high-power dynamic wireless power supply system and control method - Google Patents

Multi-module SIPO circuit topology of receiving end of magnetic parallel type electric automobile high-power dynamic wireless power supply system and control method Download PDF

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Publication number
CN112491155B
CN112491155B CN202011267999.8A CN202011267999A CN112491155B CN 112491155 B CN112491155 B CN 112491155B CN 202011267999 A CN202011267999 A CN 202011267999A CN 112491155 B CN112491155 B CN 112491155B
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receiving
electric energy
group
igbt
bridges
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CN112491155A (en
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姜金海
周星健
朱春波
宋凯
董帅
赵梵丹
王泽伦
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Harbin Institute of Technology
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Harbin Institute of Technology
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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention provides a receiving end multi-module SIPO circuit topology and a control method of a magnetic parallel type electric automobile high-power dynamic wireless power supply system, wherein the circuit topology structure specifically comprises a magnetic coupling mechanism and a compensation topology, and 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 is divided into two groups of H-bridges connected in series, a transformer and a group of controllable rectifying circuit units; the invention is applied to the dynamic wireless power supply field of electric vehicles, automatic guided vehicles, rail transit and other objects, and the parallel structure of the output side is magnetically connected in parallel through the transformer, so that the functions of multi-module power synthesis and isolation of the front and rear stages can be realized; and then the load battery or the battery and the motor are powered by controllable rectification, so that constant voltage output under the voltage input in a wide range is realized.

Description

Multi-module SIPO circuit topology of receiving end of magnetic parallel type electric automobile high-power dynamic wireless power supply system and control method
Technical Field
The invention relates to the field of wireless power supply, in particular to a multi-module SIPO circuit topology of a receiving end of a magnetic parallel type electric automobile high-power dynamic wireless power supply system and a control method.
Background
The following problems are generally existed in the current scheme of the energy conversion circuit at the receiving end of the high-power dynamic wireless power supply system in the market:
1. the basic structure of the dynamic wireless power supply system is shown in fig. 1, and 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 transfer system is typically high enough to meet the power and efficiency requirements. However, due to voltage stress thresholds and cost limitations of power electronics, the input voltage to the secondary power management section is typically limited to a certain range.
2. Two typical secondary energy management circuit configurations for use in high power wireless power supply systems are shown in fig. 2, in which an IGBT or a power MOSFET is typically used as a switching device in the DC-DC conversion module in fig. 2 (a), and a controllable rectifying module is used as the main module of the energy management circuit in fig. 2 (b), and a MOSFET is typically used as a switching device. Due to the limitation of the prior manufacturing technology, the power capacity and the frequency of the two devices are in cross limitation, and high-efficiency energy output can not be realized by high power of the electric automobile, wherein the high power refers to an application environment in a power range of 20kW to 200 kW.
3. In the dynamic wireless power supply system, the positions of the primary coil and the secondary coil change in real time along with the movement of a vehicle, and the voltage fluctuation of the secondary coupling is large, so that the high-frequency rectifying module has a wide-range electric energy input requirement. Under the same output power level, the lower the input voltage bearable by the high-frequency rectification input is, the larger the average current running in the receiving end coil is, which is unfavorable for improving the transmission efficiency of the system, and is unfavorable for the lightening and miniaturization of the receiving end coil, and the worse the safety and economy are in long-term running.
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 a dynamic wireless power supply system of an existing electric automobile, an Automatic Guided Vehicle (AGV), rail transit and the like, and provides a receiving end multi-module SIPO circuit topology and a control method of a magnetic parallel type electric automobile high-power dynamic wireless power supply system.
The invention is realized by the following technical scheme, the invention provides a multi-module SIPO circuit topology of a receiving end of a high-power dynamic wireless power supply system of a magnetic parallel electric automobile, and the SIPO circuit is a secondary side energy management circuit based on input series connection and output parallel connection of a controllable rectifying circuit; the circuit topology structure specifically comprises a magnetic coupling mechanism and a compensation topology, and 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 H bridges, a second group of H bridges, a transformer and a controllable rectifying circuit unit, wherein the two groups of H bridges are connected in series; the two groups of H bridges connected in series are connected with the controllable rectifying circuit unit through a transformer; the controllable rectifying circuit unit comprises two IGBT tubes and a capacitor, one end of the capacitor is connected with one end of the transformer and one end of the load respectively, the other end of the capacitor is connected with one end of the two IGBT tubes and the other end of the load respectively, and the other ends of the two IGBT tubes are connected with the transformer respectively.
Further: each of the two groups of H bridges in series connection comprises 4 IGBT tubes, and the 4 IGBT tubes are H-shaped.
Further: the load is an electric automobile battery or a battery and a motor.
Further: the magnetic coupling mechanism is an inductance 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 receiving end multi-module SIPO circuit topology applied to the magnetic parallel type electric automobile high-power dynamic wireless power supply system, electric energy received by the resonance coil is input into the receiving end electric energy converter through two paths of full-bridge circuits connected in series, and the two receiving end electric energy converters are adjusted to simultaneously open a group of IGBTs to realize the simultaneous conduction of the input sides of the two receiving ends, at the moment, four IGBT tubes share the output voltage stress of the receiving ends, the upper limit of the voltage input of the receiving end is doubled, and the high-frequency rectification input can normally work within 2000V; the control method has two typical working states, and the parallel structure of the output side is magnetically connected in parallel through a transformer, so that the functions of power synthesis and isolation of the front stage and the rear stage can be realized; then, the load is powered by the controllable rectifying circuit unit; and meanwhile, the output power control is realized by PWM (pulse width modulation) controllable rectification.
Further: the two typical operating states are specifically:
(1) Operating state 1: PWM1 is in low level, PWM2 is in high level, IGBT tube S 2 、S 3 、S 8 、S 9 、S 5 Conduction, IGBT tube S 1 、S 4 、S 7 、S 10 、S 6 Turning off;
(2) Working state 2: PWM1 is in high level, PWM2 is in low level, IGBT tube S 2 、S 3 、S 8 、S 9 、S 5 Turn-off IGBT tube S 1 、S 4 、S 7 、S 10 、S 6 Conducting.
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 schematic diagram of two typical secondary side energy management circuits in the prior art; (a) A secondary side energy management circuit structure formed by using an uncontrolled rectification and a DC-DC module, (b) a secondary side energy management circuit structure formed by using a controllable rectification module;
FIG. 3 is a schematic diagram of a SIPO-based receiver-side power converter with a controllable rectifying circuit;
FIG. 4 is a schematic diagram of a typical operating mode of SIPO;
fig. 5 shows two operating states of the general-condition IGBT tube of SIPO, where (a) is operating state 1 and (b) is operating state 2;
fig. 6 is a schematic diagram of input current, PWM control signal and no-load voltage.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments 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 be limiting in any way. It should be noted that modifications and improvements to the embodiments described herein can be made by those skilled in the art without departing from the present concepts. These are all 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 Automatic Guided Vehicle (AGV), rail transit and other objects of the existing electric automobile, and provides a receiving end multi-module SIPO circuit topology and a control method of a magnetic parallel type electric automobile high-power dynamic wireless power supply system under a high-power environment with a power range of 20kW-200 kW.
With reference to fig. 1-6, the present invention is implemented by the following technical solutions, and the present invention proposes: the receiving end multi-module SIPO circuit topology of the magnetic parallel type electric automobile high-power dynamic wireless power supply system is shown in fig. 3, wherein the SIPO circuit is a secondary side energy management circuit based on input series connection and output parallel connection of a controllable rectifying circuit; the circuit topology structure specifically comprises a magnetic coupling mechanism and a compensation topology, and 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 H bridges, a second group of H bridges, a transformer and a controllable rectifying circuit unit, wherein the two groups of H bridges are connected in series; the two groups of H bridges connected in series are connected with the controllable rectifying circuit unit through a transformer; the controllable rectifying circuit unit comprises two IGBT tubes and a capacitor, one end of the capacitor is connected with one end of the transformer and one end of the load respectively, the other end of the capacitor is connected with one end of the two IGBT tubes and the other end of the load respectively, and the other ends of the two IGBT tubes are connected with the transformer respectively.
Each of the two groups of H bridges in series connection comprises 4 IGBT tubes, and the 4 IGBT tubes are H-shaped.
The load is an electric automobile battery or a battery and a motor.
The magnetic coupling mechanism is an inductance 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 receiving end multi-module SIPO circuit topology applied to the magnetic parallel type electric automobile high-power dynamic wireless power supply system, electric energy received by the resonance coil is input into the receiving end electric energy converter through two paths of full-bridge circuits connected in series, and the two receiving end electric energy converters are adjusted to simultaneously open a group of IGBTs to realize the simultaneous conduction of the input sides of the two receiving ends, at the moment, four IGBT tubes share the output voltage stress of the receiving ends, the upper limit of the voltage input of the receiving ends is doubled, so that the high-frequency rectification input can work normally within 2000V (using 1200V class devices); the control method has two typical working states, and the parallel structure of the output side is magnetically connected in parallel through a transformer, so that the functions of power synthesis and isolation of the front stage and the rear stage can be realized; then, the load is powered by the controllable rectifying circuit unit; and meanwhile, the output power control is realized by PWM (pulse width modulation) controllable rectification.
As shown in fig. 4, which is a schematic diagram of a general working condition of SIPO, the SIPO is divided into two working states under the general working condition, the electric energy input side is two groups of IGBT tubes connected in series, the output side is a controllable rectifying circuit unit, and all the switching tubes are controlled strictly in a cooperative manner, so that constant voltage output under a wide range of voltage input is realized;
as shown in fig. 5 and fig. 6, two typical operation modes of the system are shown, and the output current is always the current in the same direction by controlling the time sequence of the switching tube, so as to charge the battery load. Meanwhile, output power control is realized through controllable rectification of the parallel output side of the PWM and the receiving end, and the two typical working states are specifically as follows:
(1) Working state 1: PWM1 is in low level, PWM2 is in high level, IGBT tube S 2 、S 3 、S 8 、S 9 、S 5 Conduction, IGBT tube S 1 、S 4 、S 7 、S 10 、S 6 Turning off;
(2) Working state 2: PWM1 is in high level, PWM2 is in low level, IGBT tube S 2 、S 3 、S 8 、S 9 、S 5 Turn-off IGBT tube S 1 、S 4 、S 7 、S 10 、S 6 Conducting.
The multi-module SIPO circuit topology and the control method of the receiving end of the magnetic parallel type electric vehicle high-power dynamic wireless power supply system provided by the invention are described in detail, and the principle and the implementation mode of the invention are described herein, and the description is only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.

Claims (5)

1. A control method of a receiving end multi-module SIPO circuit topology of a magnetic parallel type electric automobile high-power dynamic wireless power supply system is characterized by comprising the following steps: the SIPO circuit is a secondary side energy management circuit based on input series connection and output parallel connection of a controllable rectifying circuit; the circuit topology structure specifically comprises a magnetic coupling mechanism and a compensation topology, and 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 H bridges, a second group of H bridges, a transformer and a controllable rectifying circuit unit, wherein the two groups of H bridges are connected in series; the two groups of H bridges connected in series are connected with the controllable rectifying circuit unit through a transformer; the controllable rectifying circuit unit comprises two IGBT tubes and a capacitor, one end of the capacitor is connected with one end of the transformer and one end of the load respectively, the other end of the capacitor is connected with one end of the two IGBT tubes and the other end of the load respectively, and the other ends of the two IGBT tubes are connected with the transformer respectively;
the electric energy received by the resonance coil is input into the receiving end electric energy converter through two paths of full-bridge circuits which are connected in series, a group of IGBTs are simultaneously turned on through adjusting the two paths of the receiving end electric energy converters to realize the simultaneous conduction of the input sides of the two receiving ends, and at the moment, the four IGBT tubes share the output voltage stress of the receiving ends, so that the upper limit of the voltage input of the receiving ends is doubled, and the high-frequency rectification input can normally work within 2000V; the control method has two working states, the parallel structure of the output side is magnetically connected in parallel through the transformer, and the functions of power synthesis and isolation of the front stage and the rear stage can be realized; then, the load is powered by the controllable rectifying circuit unit; and meanwhile, the output power control is realized by PWM (pulse width modulation) controllable rectification.
2. The method for controlling a circuit topology according to claim 1, wherein: each of the two groups of H bridges in series connection comprises 4 IGBT tubes, and the 4 IGBT tubes are H-shaped.
3. The method for controlling a circuit topology according to claim 1, wherein: the load is an electric automobile battery or a battery and a motor.
4. The method for controlling a circuit topology according to claim 1, wherein: the magnetic coupling mechanism is an inductance wound by a coil; the compensation topology is composed of a capacitor or an inductor and a capacitor.
5. The method for controlling circuit topology according to claim 1, wherein the two working states are specifically:
(1) Working state 1: PWM1 is at low level, PWM2 is at high level, IGBT tube S in the first group of H bridge 2 、S 3 IGBT tube S in first group H bridge 1 、S 4 Turn off the IGBT tube S in the second group of H bridges 8 、S 9 IGBT tube S in second group H bridge 7 、S 10 Turning off; IGBT tube S of controllable rectifying circuit unit 5 Conduction, S 6 Turning off;
(2) Working state 2: PWM1 is at high level, PWM2 is at low level, IGBT tube S in the first group of H bridge 2 、S 3 Turn off the IGBT tube S in the first group of H bridges 1 、S 4 IGBT tube S in second group H bridge 8 、S 9 Turn off the IGBT tube S in the second group of H bridges 7 、S 10 Conducting; IGBT tube S of controllable rectifying circuit unit 5 Turn off, S 6 Conducting.
CN202011267999.8A 2020-11-13 2020-11-13 Multi-module SIPO circuit topology of receiving end of magnetic parallel type electric automobile high-power dynamic wireless power supply system and control method Active CN112491155B (en)

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CN113997804B (en) * 2021-10-27 2023-06-30 重庆前卫无线电能传输研究院有限公司 Wireless power supply system for ship

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106849299A (en) * 2017-03-17 2017-06-13 山东大学 The variable magnetic coupling resonant radio energy transmitting device of resonance compensation topology and method
CN110936827A (en) * 2019-12-20 2020-03-31 中兴新能源汽车有限责任公司 Wireless charging system, wireless charging control method and automobile wireless charging device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106849299A (en) * 2017-03-17 2017-06-13 山东大学 The variable magnetic coupling resonant radio energy transmitting device of resonance compensation topology and method
CN110936827A (en) * 2019-12-20 2020-03-31 中兴新能源汽车有限责任公司 Wireless charging system, wireless charging control method and automobile wireless charging device

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