An open-winding hybrid excitation motor

Abstract

The invention discloses an open-winding mixed excitation motor. The open-winding mixed excitation motor comprises a stator, a rotor, stator teeth, permanent magnets, armature windings, and electric excitation windings, wherein the permanent magnets are arranged in the rotor, each armature windings is embedded between stator teeth, and each electric excitation winding is wound around one stator tooth, the armature windings are embedded among a half of stator teeth, the other half of stator teeth without armature windings serve as fault-tolerant teeth, the electric excitation windings are centralized windings which are isolated through the fault-tolerant teeth, the head end and the tail end of each electric excitation winding are in an open-circuit state, and the electric excitation windings are free of neutral point connection. The open-winding mixed excitation motor solves the problems that an existing permanent magnet motor is narrow in speed adjustable range and poor in fault-tolerant capacity. In addition, the open-winding mixed excitation motor further solves the problems of demagnetization of permanent magnets and difficult excitation regulation of the existing open-winding permanent magnet motor on the basis that magnetic circuit characteristics of the open-winding mixed excitation motor is not changed.

Description

technical field [0001] The invention relates to an open-winding hybrid excitation motor device, belonging to a new type of special motor technology. Background technique [0002] Pure electric vehicles and plug-in hybrid vehicles mainly rely on motor drive systems to provide power. No matter what type of electric vehicle, the motor drive system is an indispensable part. At present, most of the electric vehicles that have been put into commercial operation at home and abroad use permanent magnet motor drive system devices. However, traditional permanent magnet motors have problems such as narrow speed regulation range and poor fault-tolerant operation ability. The open-winding structure can solve the above problems and ensure its magnetic circuit characteristics, and the motor still has the advantages of high power density and high efficiency, and also meets the needs of electric vehicles for the fault-tolerant operation of the motor drive system. However, open-winding perm...

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Problems solved by technology

[0003] Purpose of the invention: Aiming at the above-mentioned prior art, an open-winding hybrid excitation motor is proposed to solve the problems of narrow speed regulation range and poor fault-tolerant operation ability of traditional permanent magnet motors, while ensuring that its magnetic circuit characteristics remain unchanged. Solve the difficult problems of permanent magnet demagnetization and excitation adjustment in open-winding permanent magnet motors

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