A Redundant Excitation Double Armature Winding Multiphase Flux Switching Motor with Fault Tolerant Teeth

Abstract

The invention discloses a redundant excitation double-armature winding multiphase magnetic flux switching motor with fault-tolerant teeth, which comprises a stator core, a rotor core, 4m armature coils and magnetic exciting coils, wherein the stator core is formed by splicing 4m E-shaped iron core units and 4m permanent magnets in a staggering way; the magnetizing directions of the permanent magnets are tangential; the adjacent magnetizing directions are opposite; a raised tooth in the middle of each E-shaped iron core unit is a stator fault-tolerant tooth; raised teeth at both sides of each E-shaped iron core unit are permanent magnet teeth; one permanent magnet and two permanent magnet teeth which are in contact with the permanent magnet form a stator permanent magnet tooth; the armature coils are sheathed on the stator permanent magnet tooth; the 2m adjacent armature coils form a first set of symmetrical m-phase armature winding; the other 2m armature coils form a second set of symmetrical m-phase armature winding; the magnetic exciting coils are sheathed on a stator fault-tolerance tooth; and the magnetic exciting coils are sequentially connected in series from the head to thetail to form a set of single-phase central excitation winding. Compared with the prior art, the motor has the advantages that the fault tolerance and reliability of the motor are increased and the motor is provided with multiple operating modes.

Description

technical field [0001] The invention relates to a motor, in particular to a redundant excitation double armature winding multi-phase magnetic flux switching motor with fault-tolerant teeth. Background technique [0002] The current single-phase or three-phase motors adopt a structure in which the excitation and armature windings are placed separately, including the rotating excitation electric excitation structure where the rotor places the field winding / the stator places the armature winding, and the rotor places the permanent magnet / stator. Rotary excitation permanent magnet structure of armature winding, rotating armature electric excitation structure of stator placing excitation winding / rotor placing armature winding, rotating armature permanent magnet structure of stator placing permanent magnet / rotor placing armature winding. Except for the rotating permanent magnet excitation type, the above four structures require brushes and (or) commutators, which reduces the relia...

AI Technical Summary

Problems solved by technology

The current conventional single-motor drive system cannot well solve the contradiction between the torque-speed characteristics of the motor and the power demand of the system

If the power is constant, the acceleration performance and maximum speed requirements cannot be met; if the system dynamic performance is pursued, the motor power must be increased, which increases the motor volume and system mass

More importantly, the single-motor system cannot guarantee reliability requirements and enhanced fault-tolerant operation capabilities

Using a multi-motor combination structure will lead to a complex structure of the entire power system, large volume, and high cost

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