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Automatically resonance compensable inductive power transmission system for multiple primary coils

A technology of inductive power transmission and primary coils, applied in electrical components, circuit devices, etc., can solve problems affecting power grid security, economical operation, large reactive power, and low power factor of the power grid

Active Publication Date: 2016-12-07
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems: when one or more energy transmission parts fail, the protection switch acts to cut off the corresponding primary coil; at this time, other energy transmission parts that have not failed and are still working can only work in a non-resonant state. The reactive power of the system is large, resulting in low power factor and low power quality of the power grid, which affects the safety and economic operation of the power grid

Method used

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  • Automatically resonance compensable inductive power transmission system for multiple primary coils
  • Automatically resonance compensable inductive power transmission system for multiple primary coils
  • Automatically resonance compensable inductive power transmission system for multiple primary coils

Examples

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Effect test

Embodiment 1

[0073] An inductive power transmission system with multiple primary coils capable of automatic resonance compensation, consisting of an energy sending part and an energy receiving part: the energy sending part includes: a high frequency inverter-H 1 The upper output end passes through the protection switch one P in turn 1 , compensation capacitor - C 1 , primary coil-L 1 with high frequency inverter a H 1 The lower output terminal is connected; the high-frequency inverter two H 2 The upper output terminal in turn passes through the bidirectional switch II P 2 , Compensation capacitor 2 C 2 , primary coil two L 2 with high-frequency inverter two H 2 The lower output terminal is connected; the energy receiving part includes: the receiving part includes the secondary coil L connected in sequence S , Secondary compensation capacitor C S , rectification filter circuit K, load R; It is characterized in that:

[0074] The compensation capacitor—C 1 , primary coil-L 1 with ...

Embodiment 2

[0083] An inductive power transmission system with multiple primary coils capable of automatic resonance compensation is composed of an energy transmitting part and an energy receiving part. The energy receiving part is composed of: secondary coils L connected in sequence S , Secondary compensation capacitor C S , rectification filter circuit K, load R; It is characterized in that, the composition of described energy sending part is as follows:

[0084] High Frequency Inverter-H 1 The upper output end passes through the protection switch one P in turn 1 , compensation capacitor - C 1 with the primary coil a L 1 connected to the upper end of the primary coil—L 1 The lower end of the high frequency transformer with a T 12 primary winding connected to the upper end of the high-frequency transformer a T 12 primary winding The lower end of the high frequency transformer with two T 13 primary winding connected to the upper end of the high-frequency transformer two T 13...

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Abstract

The invention discloses an automatically resonance compensable inductive power transmission system for multiple primary coils. The inductive power transmission system for the two primary coils has the structural characteristics that a high-frequency transformer accesses an energy transmitting part circuit, so that a primary winding of the first high-frequency transformer (L12) is connected with a heteronymous end of the first primary coil in series, a secondary winding of the first high-frequency transformer (L12) is connected with the heteronymous end of the second primary coil in series, and thus mutual inductances between the first and second primary coils are counteracted. According to the system, when a single inverter breaks down or stops working, the non-faulty inverter still works at a resonant state, and a power factor of the system is high, and safe and economic operation of a power grid is not influenced.

Description

technical field [0001] The invention relates to an inductive power transmission system with multiple primary coils capable of automatic resonance compensation. Background technique [0002] Inductive power transfer technology has been applied to power supply for high-power equipment such as rail transit trains and electric vehicles. Compared with the traditional power transmission technology that relies on direct physical contact of conductors, its power transmission process is not affected by dirt, ice, water and other chemical substances, effectively improving the safety and reliability of power supply, and has a good application prospect. [0003] The structure and working process of the inductive power transmission system are as follows: the power-frequency alternating current is rectified into direct current through a rectifier, and the direct current is input into the high-frequency inverter device and then converted into high-frequency alternating current; the high-f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12
CPCH02J5/005
Inventor 麦瑞坤林天仁陈彦初李勇何正友谢伟
Owner SOUTHWEST JIAOTONG UNIV
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