High-reliability mixed excitation fault-tolerant motor system

Abstract

The invention discloses a high-reliability mixed excitation fault-tolerant motor system. The high-reliability mixed excitation fault-tolerant motor system comprises a stator, a rotor, a rotating shaft, permanent magnets, armature teeth, fault-tolerant teeth, armature coils and magnet exciting coils. The rotating shaft comprises a shaft body, clamping columns and protrusions, the clamping columns are evenly distributed on the outer circumferential face of the shaft body, and the protrusions are arranged on the clamping columns. The clamping columns are fixedly inlaid into rotor poles of a rotor pack, and the permanent magnet are wedged between the rotor poles. A permanent-magnet magnetic field is formed by all the permanent magnets, and an electro-magnetic magnetic field is formed by all the magnet exciting coils. Compared with a traditional built-in permanent-magnet synchronous motor, the high-reliability mixed excitation fault-tolerant motor system has the advantages that a magnetism separating bridge is saved, magnetism leakage of the permanent magnets is avoided, mechanical strength of the motor during high-speed operation is improved, and high-reliability operation of the motor is guaranteed; meanwhile, the advantages of being wide in speed governing scope, high in torque / power density, high in efficiency and the like.

Description

technical field [0001] The invention relates to a motor, in particular to a highly reliable hybrid excitation fault-tolerant motor. Background technique [0002] The built-in permanent magnet synchronous motor has the advantages of large torque output, wide speed range, high power density and high efficiency, and has been widely used in many high-performance drive fields. In the high-performance drive fields such as new energy electric vehicles, wind power generation and aerospace, high requirements are placed on the reliability of the drive system. The drive motor is the core component of the drive system, and its performance is the key factor that determines the efficiency and performance of the entire drive system. However, the current conventional built-in permanent magnet synchronous motor still has the problem of permanent magnet demagnetization and excitation adjustment difficulties, and does not consider the fault tolerance performance of the motor, which cannot mee...

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Problems solved by technology

[0004]Technical problem: In view of the above existing technologies and their deficiencies, the present invention intends to provide a highly reliable hybrid excitation fault-tolerant motor system to solve the problem of traditional built-in permanent magnet synchronous motors. There are problems of poor fault-tolerant operation performance, permanent magnet demagnetization and excitation adjustment difficulties. At the same time, the magnetic isolation bridge is omitted to avoid the magnetic flux leakage of the permanent magnets, and it can improve the mechanical strength of the motor when it is running at high speed, ensuring the high reliability of the motor.

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