Enhanced type electromagnetic resonance subway wireless power supply system

Abstract

The invention relates to an enhanced type electromagnetic resonance subway wireless power supply system which mainly comprises a power unit (1), a rectification filter module (2), a chopped wave power oscillating circuit (3), a signal control module (4), an electromagnetic field transmitting coil (5), an electromagnetic field coupling enhancing coil (6), an electromagnetic field receiving coil (7), a rectification filter chopped wave module (8), an inversion module (9), a locomotive load (10) and an electromagnetic shielding layer (11). According to the enhanced type electromagnetic resonance subway wireless power supply system, transmission modes of electric power are expanded, the electromagnetic field coupling enhancing coil with a magnetic core is design on the basis of a resonance wireless power supply structure, the efficiency of energy transmission is improved, and the distance of energy transmission is prolonged. The enhanced type electromagnetic resonance subway wireless power supply system is convenient to construct and capable of being obtained just through the improvement on an existing resonance wireless power supply system, and compared with other resonance wireless power supply structures, the enhanced type electromagnetic resonance subway wireless power supply system is low in cost, stable and reliable in structure, high in safety and wide in market prospect.

Description

technical field [0001] Wireless power transmission technology is currently one of the most active hot research directions in the field of electrical engineering. It integrates basic research and applied research. And cutting-edge topics, covering electromagnetic fields, power electronics technology, power systems, control technology, physics, materials science, information technology and many other technical fields. The wireless power supply method can effectively overcome various defects in the wire connection method and realize the free power supply of electronic appliances, which has important application expectations and broad development prospects. [0002] The enhanced electromagnetic resonance subway wireless power supply system of the present invention relates to a convenient construction, convenient system, stable operation, safe and reliable wireless energy transmission electromagnetic resonance coupling technology, which provides a technical model for wireless power...

AI Technical Summary

Problems solved by technology

[0004] At present, the subway power supply can be divided into two types: overhead catenary and catenary rail. AC25kV or DC1500V lines use the catenary system, and the cost of the catenary is high, especially the three-rail catenary, which basically relies on imports. In addition, the The method requires the subway train to be equipped with a pantograph, which contacts the catenary to obtain electric energy, but the carbon plate of the pantograph needs to be replaced frequently due to serious wear and tear, which is troublesome to operate and expensive to maintain. At the same time, this method is greatly affected by high-altitude foreign objects , For example, domestic garbage and plastic bags falling on the roof, hanging on the catenary, and entangled on the pantograph will interfere with the normal operation of the train and cause the train to stop temporarily. However, the current popular DC750V contact rail power supply form is used in trains. 750V direct current is connected to the rails of the subway, which will bring great danger to the maintenance staff under the trains. In addition, the existing subway tracks cannot be completely shielded, and the lives of passengers who fall off the platform due to missteps are even more dangerous. , Passengers who accidentally touched the contact rail and died in a click were also reported in the news

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