Non-overlapping winding tooth slot type dual-rotor permanent magnet synchronous motor

A permanent magnet synchronous motor, dual rotor technology, applied in the shape/style/structure of winding conductors, magnetic circuits, electrical components, etc., can solve the problems of low winding distribution coefficient and low power density, etc., to improve the winding coefficient, improve the Power factor, the effect of easy maintenance

Pending Publication Date: 2018-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to propose a non-overlapping winding cogging type double-rotor permanent magnet synchronous motor, which overcomes the shortcomings of low winding distribution coefficient and low power density of traditional flux switching motors

Method used

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  • Non-overlapping winding tooth slot type dual-rotor permanent magnet synchronous motor
  • Non-overlapping winding tooth slot type dual-rotor permanent magnet synchronous motor
  • Non-overlapping winding tooth slot type dual-rotor permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] see figure 1 , the non-overlapping winding cogging type double-rotor permanent magnet synchronous motor of the present invention adopts a class winding,

[0063]

[0064] In this embodiment, m=3, t=0, k=1, n=4, and the sign is positive, so the pole distance ratio θ s / θ r Set at 5 / 6, which is 10 / 12. Wherein, m is the phase number of the motor, k is the logarithm of the same-phase armature winding 113 in each motor unit, and n is the number of motor units.

[0065] The non-overlapping winding cogging type double-rotor permanent magnet synchronous motor of the present invention includes a stator 11, an inner 10 and an outer rotor 12 respectively placed on the inner and outer sides of the stator 11, and the stator 11 and the inner and outer rotors are salient pole structures; There is an air gap between the stator 11 and the inner and outer rotors. The stator 11 includes several basic units 110 connected end to end. The basic unit 110 includes two half-H-shaped magn...

Embodiment 2

[0070] image 3 It is also a non-overlapping winding cogging type double-rotor permanent magnet synchronous motor. The difference between this embodiment and Embodiment 1 is that this embodiment uses a B-type winding,

[0071]

[0072] In this embodiment, m=3, t=0, k=4, n=1, and the sign is negative, so the pole distance ratio θ s / θ r Set for 11 / 12, which is 11 / 12. Wherein, m is the phase number of the motor, k is the logarithm of the same-phase armature winding 113 in each motor unit, and n is the number of motor units.

[0073] In this embodiment, the winding directions of the armature windings 113 belonging to two adjacent basic units 110 on the same stator yoke are the same; m=3 is an odd phase, and k / 2=armatures in 2 consecutive slots Winding 113 forms a phase winding.

[0074] Wherein, the winding direction of the armature winding 113 on a certain primary yoke is the same as that of the armature winding 113 on one side adjacent to it, and is opposite to the windi...

Embodiment 3

[0078] Figure 5 It is also a non-overlapping winding cogging type double-rotor permanent magnet synchronous motor. The difference between this embodiment and Embodiment 1 is that this embodiment is a four-phase motor and uses a-type windings.

[0079]

[0080] In this embodiment, m=4, t=0, k=1, n=3, and the sign is positive, so the pole distance ratio θ s / θ r Set as 6 / 8, which is 9 / 12. Wherein, m is the phase number of the motor, k is the logarithm of the same-phase armature winding 113 in each motor unit, and n is the number of motor units.

[0081] In this embodiment, the winding direction of the armature winding 113 in the same basic unit 110 is opposite, and k=1 means that the armature winding 113 in a single basic unit 110 becomes a phase winding alone, and m*k=4 continuous basic Unit 110 constitutes a motor unit, and n=3 motor units constitute a complete motor. In order to better explain the winding distribution, the 12 pairs of stator slots on the inner and out...

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Abstract

The invention discloses a non-overlapping winding tooth slot type dual-rotor permanent magnet synchronous motor, which comprises a stator, an inner rotor and an outer rotor; an air gap is arranged between the stator and the rotor. A primary grade comprises m*k*n basic units, m is a phase number, k is a positive integer, and n is a motor unit number; every basic unit comprises two half-H shaped permeability magnetic materials and a permanent magnet arranged between the half-H shaped permeability magnetic materials; the magnetizing directions of the permanent magnet of adjacent basic units are opposite to each other, the winding is encircled at a yoke part of the basic unit; the inner and outer rotors are tooth slot structures. The motor is featured by simple rotor structure, short winding end part, non-overlapping winding, high power density, and others; the motor can be applied to electric automobile, wind power generation, and other occasions.

Description

technical field [0001] The invention relates to a double-rotor permanent magnet synchronous motor with non-overlapped winding cogging slots, and belongs to the technical field of motor manufacturing. Background technique [0002] With the development of industry, motors are widely used in various fields. The armature current and excitation current of the traditional DC motor can be adjusted independently, so it has good speed regulation characteristics, but the traditional DC motor needs to be equipped with brushes and commutators, which increases the complexity of the system and reduces the fault tolerance rate. This limits the application of traditional DC motors in areas with low fault tolerance, such as aerospace. The rotary induction motor has a simple structure, does not require brushes and commutators, has a strong load capacity, and has high reliability, so it is widely used in various fields. However, the eddy current loss of the induction motor is large, the effi...

Claims

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Application Information

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IPC IPC(8): H02K1/17H02K1/14H02K3/28H02K3/18H02K16/02
CPCH02K1/146H02K1/17H02K3/18H02K3/28H02K16/02H02K2213/03
Inventor 曹瑞武陆鸣航苏恩超
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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