Five-phase wireless charging magnetic coupling mechanism applied to rail transit

Abstract

The invention provides a five-phase wireless charging magnetic coupling mechanism applied to rail transit. The five-phase wireless charging magnetic coupling mechanism consists of two parts, wherein one part is a primary side electrical power supply device used for electrical energy transmitting and the other part is a secondary side electrical energy receiving device used for electrical energy receiving; the primary side electrical power supply device is a five-phase wireless charging transmitting end, and consists of five-phase power supply cables; the primary side electrical power supply device is mounted on the ground on the inner sides of rails and can generate magnetic fields to transmit energy to the secondary side electrical energy receiving device after being electrified; the secondary side electrical energy receiving device consists of 2N receiving ends and is mounted at the bottom of a train; the secondary side electrical energy receiving device supplies power to a load after obtaining a voltage through electromagnetic induction; and N is a positive integer. The five-phase wireless charging magnetic coupling mechanism disclosed by the invention has the advantage of constant output power; and at the same time, the magnetic fields generated by the five-phase power supply cables on two sides of the rails cancel each other out so as to weaken the magnitude of a leakage magnetic field of a system and achieve a good electromagnetic compatibility.

Description

technical field [0001] The invention belongs to the technical field of wireless energy transmission, in particular to a five-phase wireless charging magnetic coupling mechanism applied to rail transit. Background technique [0002] At present, the power supply method of rail transit is mostly overhead catenary. This method needs to install a pantograph on the train and contact with the catenary to obtain electric energy. However, the carbon slide plate of the pantograph is easy to wear and needs to be replaced frequently, which is troublesome to operate and expensive to maintain. Big. The use of rail transit wireless power supply technology can take advantage of the high flexibility of wireless power transmission and high power supply continuity. Spark hazard. At the same time, it can get rid of the shackles of wires, fundamentally avoid the impact of pantograph-catenary sliding wear, arcing, off-line and vibration contact, and external environment, thereby significantly i...

AI Technical Summary

Problems solved by technology

In the existing rail transit wireless charging magnetic coupling mechanism, the transmitter using single-phase power supply will generate a large leakage magnetic field around it, causing electromagnetic radiation pollution to the surrounding environment. Compared with it, the five-phase wireless charging magnetic coupling mechanism It can well weaken the leakage magnetic field under the premise of ensuring the power transmission performance

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