Non-contact type dynamic power supply system coil for trains in rail transit

Abstract

The invention discloses a non-contact type dynamic power supply system coil for trains in the rail transit. The coil comprises energy emission coils laid along tracks and energy picking coils installed at the bottoms of the trains. Each energy emission coil comprises multiple segments of uni-polarity coils and dual-polarity coils, which are equal in length and width and successively alternatively laid. A compensation filtering loop where the corresponding energy emission coil is arranged is parallelly connected to a high-frequency alternating-current power supply H. The energy picking coils comprise a uni-polarity coil and a dual-polarity coil, which are equal with the energy emission coils in length and width. The uni-polarity coils are serially connected with a capacitor and then parallelly connected to the input end of a rectifier K1. The dual-polarity coils are serially connected with a capacitor and then parallelly connected to the input end of a rectifier K2. The output end of the rectifier K1 and the output end of the rectifier K2 are serially connected and then connected to a motor G. According to the invention, decoupling of the energy emission coils is achieved; and the energy picking coils pick stable induced electromotive force during a moving process.

Description

technical field [0001] The invention relates to the technical field of inductive power transmission, in particular to a non-contact dynamic power supply system coil for rail transit trains. Background technique [0002] The inductive power transfer technology transmits electric energy from the energy emitting device to the energy pickup device in a non-contact manner through the high-frequency magnetic field coupling between the energy transmitting coil and the energy pickup coil. Compared with the traditional way of taking electricity by direct physical contact with conductors, inductive power transmission technology has the advantage that because the coil is not directly exposed to the air, the power transmission process is not affected by dirt, ice, water and other chemicals , effectively improving the security 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...

AI Technical Summary

Problems solved by technology

But there are still problems: there is a coupling relationship between the energy transmitting coils of each segment of the same polarity, which is not conducive to the design of system parameters. At the same time, the system is in a non-resonant working condition, which affects the system efficiency.

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