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Multiphase magnetic resistance motor with pulse torque compensation structure

A compensation structure, reluctance motor technology, applied in the magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc., can solve the problems of small motor output torque, large vibration and noise, large torque ripple, etc. Small torque ripple, small vibration, and the effect of reducing torque ripple

Active Publication Date: 2011-03-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of large torque pulsation, large vibration and noise, small output torque and low efficiency of the existing switched reluctance motor, the present invention proposes a multi-phase reluctance motor with a pulsating torque compensation structure

Method used

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  • Multiphase magnetic resistance motor with pulse torque compensation structure
  • Multiphase magnetic resistance motor with pulse torque compensation structure
  • Multiphase magnetic resistance motor with pulse torque compensation structure

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 2 Describe this embodiment, this embodiment includes a stator assembly and a rotor assembly; the stator assembly is composed of a stator core 1, a stator field winding slot 2 and a stator field winding 3; the rotor assembly is composed of a rotor core 4, a rotor core main tooth 5 and The rotor core is composed of auxiliary teeth 6; the stator core 1 and the rotor core 4 both adopt a salient pole structure; the inner surface of the stator core 1 is provided with a plurality of stator field winding slots 2 along the axial direction, and the plurality of The stator field winding slots 2 are evenly distributed along the circumferential direction of the inner surface of the stator core 1; the stator field winding 3 is embedded in the stator field winding slot 2, and the stator field winding 3 adopts a multi-phase centralized full-pitch winding, and each The phase winding is composed of k coils in series; where k is a positive...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that it also adds a plurality of strip permanent magnets 7; the plurality of strip permanent magnets 7 are embedded in the slot of the stator field winding slot 2 along the axial direction mouth; the magnetization mode of the strip permanent magnet 7 is tangential parallel magnetization, the magnetization directions of two adjacent strip permanent magnets 7 are opposite, and the direction of the magnetic field lines generated when the stator field winding 3 is energized is the same as The directions of the magnetic force lines of the strip permanent magnets 7 are opposite. Other compositions and connection methods are the same as those in Embodiment 1.

specific Embodiment approach 3

[0009] Specific implementation mode three: combination Figure 4 Describe this embodiment, the difference between this embodiment and the specific embodiment is that it also increases a plurality of slot wedges 8; the plurality of slot wedges 8 are non-magnetic low resistivity slot wedges; the plurality of slot wedges 8 Embedded in the notch of the stator field winding slot 2 along the axial direction. Other compositions and connection methods are the same as those in Embodiment 1.

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Abstract

The invention discloses a multiphase magnetic resistance motor with a pulse torque compensation structure, relating to a multiphase magnetic resistance motor. The motor is provided for solving the problems that the existing switched reluctance motor has big torque pulse, large vibration and noise, small motor output torque and low efficiency. The inner surface of a stator iron core is axially provided with a plurality of stator exciting winding grooves, stator exciting windings are embedded in the stator exciting winding grooves, and a plurality of rotor iron core main teeth and rotor iron core assistant teeth are successively arranged at interval along the circumference direction of the outer surface of the rotor iron core; a centre angle corresponding to the width of the rotor iron core main teeth is theta 1 which is less than 360 degrees* (m-2) / 2 km; a centre angle corresponding to the width of the rotor iron core assistant teeth is theta 2; the theta 2, the centre angle theta 1 corresponding to the width of the rotor iron core main teeth and a centre angle theta s corresponding to the width of the stator exciting winding grooves satisfy the following three relations: theta 2 is less than theta 1; theta 2 is more than [2 theta s-(360 degrees / 2m-theta 1)] / k and less than [2 theta s+(360 degrees / 2m-theta 1)] / k; and the sum of theta 1 and theta 2 is more than 360 degrees / 2 km. The invention has the advantages of small torque pulsation, small vibration, low noise, large output torque and high motor efficiency.

Description

technical field [0001] The invention relates to a polyphase reluctance motor. Background technique [0002] The stator and rotor of the traditional switched reluctance motor are both salient pole structures, such as figure 1 shown. By sequentially energizing the stator field windings in the switched reluctance motor, the stator poles interact with the rotor poles to generate torque. Since there are neither windings nor permanent magnets on the rotor, the structure of this motor is simple, strong, reliable, low-cost, and suitable for high-speed operation. However, since both the stator and the rotor are of ordinary double-salient straight-tooth structure, the change rate of the air gap permeability at the commutation point is high, and the tangential force and radial force on the stator and rotor are large, so the radial force of the stator and the rotor are large. The deformation is large, the torque ripple of the motor is large, and the vibration and noise are large duri...

Claims

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Application Information

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IPC IPC(8): H02K29/00H02K1/24H02K1/14
Inventor 寇宝泉谢大纲杨锡辉
Owner HARBIN INST OF TECH
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