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An inverter power supply for wireless power transfer based on direct control of ac-ac converter

A technology of wireless power transmission and inverter power supply, which is applied in the direction of converting AC power input into AC power output, AC power input into DC power output, power management, etc. It can solve the problems of poor stability, large power loss, and large volume. , to achieve the effect of improving power stability, reducing energy loss and improving system efficiency

Active Publication Date: 2021-04-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of large power loss, large volume and poor stability of the existing power frequency transmission in the form of high-frequency inverter power supply systems, and proposes a wireless power transmission inverter based on direct control of AC-AC converters. The variable power supply is mainly used in the wireless power transmission system of household miniaturized electric vehicles. The power frequency is transmitted into the form of high-frequency power to supply the primary side coil for energy transmission, that is, a wireless power in the form of 20kHz power required by the coupling mechanism at the transmitting end. Transmission inverter power

Method used

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  • An inverter power supply for wireless power transfer based on direct control of ac-ac converter
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  • An inverter power supply for wireless power transfer based on direct control of ac-ac converter

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Embodiment 1

[0024]This embodiment includes a full bridge chopper circuit, a chopper output acquisition circuit, an FPGA data processing circuit, and an FPGA output control circuit configuration, the external port is reserved as a single-phase intensive frequency access and radio energy transmission coupling mechanism static input terminal. Once, the 20kHz electrical energy output of electric vehicle wireless charging needs is provided. The specific techniques taken are as follows:

[0025]A radio energy transmission inverter power source based on a direct control AC-AC converter, the inverter adopts radio energy transfer LC resonance topology. The power source includes a full bridge circuit 1, an 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 full bridge The AC energy signal input of the chopper circuit 1 is connected to th...

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Abstract

The invention proposes a wireless power transmission inverter power supply based on direct control of an AC-AC converter, which belongs to the technical field of electric vehicle wireless power transmission. The invention includes a system composed of a full-bridge chopper circuit, a chopper output acquisition circuit, an FPGA data processing circuit, and an FPGA output control circuit; the external port is reserved for single-phase power frequency access and the static input terminal connection of the wireless power transmission coupling mechanism output, providing the 20kHz power output required by the wireless charging of electric vehicles. The wireless power transmission inverter power supply has the characteristics of high efficiency, high stability, and small volume.

Description

Technical field[0001]The present invention relates to a radio energy transmission inverter power source based on a direct control AC-AC converter, belonging to the field of electric vehicle radio energy transmission technology.Background technique[0002]At present, there are two major bottlenecks in the development of electric vehicles: one is the battery problem on the car - from the recent technical perspective, there are many problems such as volume, weight, price, material, safety, charging speed, life, etc. The process of production and use belongs to high pollution, consuming resources, and destroys the process of the ecological environment. These characteristics have brought difficulties to industrialization of electric vehicles; on the other hand, the surface of charging infrastructure on the ground - due to battery material characteristics (electrical energy Density, power density, etc.), battery charging time and short battery, require a large amount, high frequency, charge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J7/02H02M5/293B60L53/12
CPCH02M7/219H02J50/12Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 朱春波周星健
Owner HARBIN INST OF TECH
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