Blocked double-stator switched reluctance motor for electric vehicle

Abstract

The invention discloses a blocked double-stator switched reluctance motor for an electric vehicle. N(i)s( / i) inner blocked stators are uniformly arranged along the circumferential direction of an outer wall of a non-magnetized inner stator collar; N(i)r( / i) inner side blocked rotors are coaxially sleeved out of the N(i)s( / i) inner blocked stators with gaps; N(i)r( / i) outer side blocked rotors areuniformly arranged on the outer wall of the non-magnetized inner stator collar along the circumferential direction; N(i)s( / i) outer blocked stators are coaxially sleeved out of the N(i)r( / i) outer side blocked rotors; a radial cross section of each of the outer blocked stators is M-shaped; two ends of an outer stator yoke part extend inward to form two outer stator auxiliary teeth, and the middleof the outer stator yoke part extends inward to form an outer stator branched excitation tooth; an outer winding is wound on the outer stator branched excitation tooth; an inner end of the outer stator branched excitation tooth extends inward along the radial direction to form two outer stator branched teeth; the inner blocked stators and the outer blocked stators have the same topological structure; closed magnetic circuits generated by the inner and outer stators are independent of each other; the excitation tooth located in the middle is disposed in the branched structure, thus the problemof large local flux density between the teeth is solved.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing and application, in particular to a switched reluctance motor, which is suitable for electric vehicles requiring frequent start and stop. Background technique [0002] Switched reluctance motors are used in electric vehicles due to their simple structure, good robustness, large starting torque, small starting current, and high efficiency. However, the traditional switched reluctance motor has the inherent problems of relatively large torque ripple and vibration noise due to its doubly salient stator and rotor structure, and its torque density is also lower compared with the permanent magnet synchronous motor. These shortcomings restrict the promotion of traditional switched reluctance motors in the field of electric vehicles. [0003] In view of this problem, a switched reluctance motor with a double-stator structure is proposed. For example, a document with a Chinese patent publicati...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the existing double-stator switched reluctance motor, and to propose a method that can improve the vibration of the stator and rotor of the double-stator switched reluctance motor, improve the utilization rate of the magnetic circuit of the motor, and improve the torque and torque of the motor. Efficient split-block dual-stator switched reluctance motors for electric vehicles

Images