A dual-rotor magnetic flux switching motor for vehicles

A flux-switching motor and double-rotor technology, which is applied to magnetic circuits, electric components, electrical components, etc., can solve the problems of low utilization rate of permanent magnets, magnetic flux leakage from the outer circle of the stator of the flux-switching motor, etc., to improve easy saturation, The effect of improving torque output capacity and improving utilization rate

Active Publication Date: 2018-04-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these motors have not solved the problem of magnetic flux leakage from the outer circle of the stator of the flux switching motor, resulting in a low utilization rate of the permanent magnets.

Method used

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  • A dual-rotor magnetic flux switching motor for vehicles
  • A dual-rotor magnetic flux switching motor for vehicles
  • A dual-rotor magnetic flux switching motor for vehicles

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Experimental program
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Embodiment Construction

[0034] See figure 1 with figure 2 , The present invention is composed of dual rotor 1, stator 6, armature winding 12 and non-magnetically conductive rotating shaft 5. Among them, the double rotor 1 is composed of an outer rotor core 2, an inner rotor core 3 and an annular disc 4. The outer rotor core 2 has a coaxial hollow inner rotor core 3, and the outer rotor core 2 and the inner rotor core An annular disc 4 is fixedly installed on the same axial end surface of 3, and the outer rotor core 2 and the inner rotor core 3 are fixedly connected through the annular disc 4. The connection method is riveting or welding, so that the double rotor 1 becomes A whole. A stator 6 is coaxially installed between the outer rotor core 2 and the inner rotor core 3, and the inner rotor core 3 is coaxially fixed and sleeved outside the non-magnetic rotating shaft 5. In this way, the present invention is sequentially arranged from the inside to the outside in the radial direction. The non-magne...

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Abstract

The present invention discloses a dual-rotor flux-switching motor for a vehicle. A stator is formed by three-phase armature winding, Ns stator core modules and Ns armature slots, Ns=3Nc, and Nc is the coil number of single-phase windings. The Ns stator core modules are uniformly distributed along a circumferential direction. An armature slot is arranged between each two stator core modules, and the three-phase armature winding is placed in the armature slots. A hybrid permanent magnet module is fixedly embedded at the middle of each of the stator core modules along a radial direction. Each of the hybrid permanent magnet modules is formed by a ferrite permanent magnet and two identical NdFeB permanent magnets, and the ferrite permanent magnet and the NdFeB permanent magnets at two sides are closely and seamlessly connected. A significant series magnetic circuit is formed in the magnet flux path of two adjacent permanent magnets. Compared with a traditional magnet flux switching permanent magnet motor in a parallel magnetic circuit, the stator tooth part easy saturation problem is significantly improved, and the utilization rate of the permanent magnet is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of motor manufacturing, and specifically refers to a dual-rotor magnetic flux switching motor used in electric vehicles and the like. Background technique [0002] The flux-switching motor adopts a stator permanent magnet structure. The armature winding and permanent magnet are located on the stator. There is neither armature winding nor permanent magnet on the rotor. The structure is simple, the operation is reliable, and the efficiency and power density are high. On the one hand, this type of flux-switching motor that follows the principle of flux-switching, due to its winding complementarity, can greatly reduce or offset the high-order harmonic components in the permanent magnetic flux and induced electromotive force of a single winding coil, making the motor adopt Under the condition of centralized armature winding and rotor straight slot, high sine degree no-load permanent magnet flux linkage and induced ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/02H02K1/17H02K1/02H02K1/24H02K1/32
CPCH02K1/02H02K1/17H02K1/24H02K1/32H02K16/02H02K2201/03
Inventor 朱孝勇张超全力杜怿
Owner JIANGSU UNIV
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