Freestanding bi-convex-pole fault-tolerance motor

Abstract

The present invention provides an independent double-salient fault tolerant motor. The motor adopts a double-salient structure; stator salient poles are evenly distributed on the internal circumference of a stator (1) and a permanent magnet (3) is arranged on the circumference of the stator (1) in pairs for easy cooling; an armature winding (4) is arranged on the stator (1), each slot has only one winding and a fault tolerant gear (5) has no winding; each polar winding adopts an independent 'H' bridge for driving and each winding independently forms a phase; a rotor (2) adopts a salient pole structure without winding or permanent magnet and the structure is simple. The fault tolerant motor, due to physical and electric insulation between phases, avoids the interphase short-circuit and at the same time hardly affects other non-fault phase windings when a certain phase winding of the motor fails, thus improving reliability and operation capacity with fault of the motor. Therefore, the motor has the advantages of high reliability, high power density and fault tolerance.

Description

technical field [0001] The invention relates to the technical fields of electrician, motor, and control. More specifically, the invention is a high-reliability independent multi-phase new double-salient pole motor suitable for the motor drive field with high requirements for continuous operation of the system. Background technique [0002] At present, rare earth permanent magnet motors such as permanent magnet brushless DC motors and permanent magnet synchronous motors are widely used in more and more industrial drive and servo control fields due to their small size, high efficiency, and good dynamic response characteristics. However, the inherent characteristics of permanent magnet motors limit its fault tolerance performance, especially the temperature rise caused by winding short circuit faults, which are more difficult. In order to combine high power density and high fault tolerance, Professor B.C. Mecrow of the United Kingdom proposed the concept of a new fault-tolerant...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the drawbacks of the rotor permanent magnet fault-tolerant motor, such as the relatively complicated rotor structure and the difficulty of heat dissipation of the permanent magnet placed in the rotor, and to solve the problem that the temperature rise caused by the short-circuit current of the double salient pole permanent magnet motor affects the adjacent non- Due to the influence of the faulty phase, the motor has disadvantages such as reduced operating capacity with faults. Combining the fault-tolerant concept of phase-to-phase independence with double salient pole permanent magnet motors, the invention has a simple structure and good phase-to-phase independence. New multi-phase fault-tolerant stator permanent magnet brushless motor with power density and fault-tolerant performance

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