High-frequency inverter power supply of wireless power transmission device and frequency doubling control method for inverter power supply

A technology of wireless power transmission and high-frequency inverter, which is applied to circuit devices, irreversible DC power input to AC power output, electrical components, etc., can solve the problems of low transmission efficiency and low adaptability, and achieve high-speed Level induced voltage, improved usability, and reduced impact effects

Active Publication Date: 2013-01-02
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the problems of low adaptability to primary and secondary relative positions and low transmission efficiency of existing non

Method used

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  • High-frequency inverter power supply of wireless power transmission device and frequency doubling control method for inverter power supply
  • High-frequency inverter power supply of wireless power transmission device and frequency doubling control method for inverter power supply
  • High-frequency inverter power supply of wireless power transmission device and frequency doubling control method for inverter power supply

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Example Embodiment

[0040] figure 1 Shown is the first embodiment of the present invention: a block diagram of a frequency multiplication high frequency inverter power supply of a full-bridge inverter type wireless power transmission device and a frequency multiplication control method thereof. The basic composition and connection methods are as follows.

[0041] The high-frequency inverter power supply of the present invention includes: a DC power supply 1, an inverter frequency multiplier circuit 2, a main controller 8, a secondary controller 11, a primary resonant capacitor 5, a secondary resonant capacitor 5', and a primary capacitor compensation regulator 10. Secondary capacitance compensation regulator 10', contactless transformer 4, frequency and phase detection module 9, primary state quantity detection sensor 3, secondary state quantity detection sensor 3', primary communication module 12, secondary communication module 12' , Rectifier 6, load 7, drive circuit 13, etc.

[0042] The positive a...

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Abstract

The invention discloses a high-frequency inverter power supply of a wireless power transmission device and a frequency doubling control method for the inverter power supply. An inverter frequency doubling circuit (2) consists of n sets of parallel inverter units (2'); a main controller (8) determines output power and output frequency according to the working conditions of a noncontact transformer (4) and a load (7), adjusts duty ratios of pulses and phases between the pulses and sends driving pulse signals; the n sets of inverter units (2') of the inverter frequency doubling circuit (2) are driven to act by a driving circuit (13) in a time division mode, so that the output voltage frequency or the current frequency of the inverter frequency doubling circuit (2) is n times those of the inverter units (2'), and adjustment of a 1 to n-times output frequency range is realized; and a primary resonant capacitor (5) and a secondary resonant capacitor (5') can be adjusted according to the output frequency of the inverter frequency doubling circuit (2) to keep efficient transmission, wherein n is an integer not less than 1.

Description

technical field [0001] The invention relates to a high-frequency inverter power supply for a wireless energy transmission device and a frequency multiplication control method thereof. Background technique [0002] At present, electrified transportation vehicles such as electric vehicles and urban rail transit are charged or powered by contact, especially urban rail transit, etc., are powered by mobile contact between catenary and pantograph. Sparks and friction are likely to cause carbon deposition due to poor contact Dust, low safety and reliability of power supply, serious pollution, heavy maintenance workload, and equipment service life are also affected. When encountering harsh environments such as rain and snow, contact power supply has obvious limitations. Wireless power supply technology can effectively solve the above problems. Its characteristics are: (1) No physical contact is required between the power supply and the load unit, electrical insulation, safety and re...

Claims

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Application Information

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IPC IPC(8): H02M7/48H02J17/00H02J50/05
Inventor 史黎明蔡华李耀华
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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