Bearing integrated rotary transformer stator and rotor structure

Abstract

The invention relates to a bearing-integrated rotary transformer stator-rotor structure, which includes a rotary transformer stator and a rotary transformer rotor. The rotary transformer rotor is located inside the rotary transformer stator. The rotary transformer rotor is provided with a shaft hole. Transformer stator side winding, the outer periphery of the resolver rotor is provided with a resolver rotor side winding, rolling parts are evenly arranged between the resolver stator and the resolver rotor, the position of the rolling parts and the resolver stator is relatively unchanged, and the rolling parts can When the rotor of the resolver rotates, it rolls and rotates in situ, the number of pole pairs of windings on the stator side of the resolver + the number of pole pairs of windings on the rotor side of the resolver = the number of rolling elements. The rolling parts of the present invention adopt magnetically permeable materials, whose magnetic permeability is far greater than that of air, and most of the magnetic field is coupled through the rolling parts to make the waveform more sinusoidal. The integral contact structure has reliable structure, high service life and high working efficiency.

Description

technical field [0001] The invention relates to a stator-rotor structure, in particular to a bearing-integrated rotary transformer stator-rotor structure. Background technique [0002] The development and utilization of energy is the source of power for economic development and social productivity. Electric energy has been widely used as a secondary energy source after the second industrial revolution. In today's society, automobiles have become a necessity in human daily life, so people must Automobiles are undergoing a technological revolution of energy saving and emission reduction, and new energy vehicles have emerged in this revolution. Under the background of global energy shortage, environmental deterioration and abnormal climate, new energy vehicles can meet human needs for vehicle mobility on the one hand; on the other hand, compared with traditional power system vehicles, new energy vehicles are economical and environmentally and the value of sustainable developme...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of adding additional devices or additional windings, complicating the electromagnetic relationship, and reducing the power density of the motor in the existing brushless motor excitation scheme, the present invention proposes a bearing-integrated rotary transformer stator-rotor structure to realize electric energy transmission. This excites the motor field winding

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