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Inner rotor permanent-magnet synchronous motor with staggered grooved structure and low positioning force moment

A technology of permanent magnet synchronization and positioning torque, which is applied in the direction of electrical components, electromechanical devices, etc., can solve problems such as restricting the application range of permanent magnet synchronous motors, and achieve the effects of simple structure, low cost, and reduced inherent positioning torque

Inactive Publication Date: 2013-06-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low positioning torque inner rotor permanent magnet synchronous motor with dislocation slotting structure. In order to solve the inherent positioning torque of existing permanent magnet synchronous motors, the low speed performance and high precision position of permanent magnet synchronous motors are restricted. The scope of application in the control

Method used

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  • Inner rotor permanent-magnet synchronous motor with staggered grooved structure and low positioning force moment
  • Inner rotor permanent-magnet synchronous motor with staggered grooved structure and low positioning force moment
  • Inner rotor permanent-magnet synchronous motor with staggered grooved structure and low positioning force moment

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Effect test

specific Embodiment approach 1

[0009] Specific implementation mode one: as figure 1 , figure 2 , image 3 As shown, it is composed of a first inner rotor permanent magnet synchronous motor 1 and a second inner rotor permanent magnet synchronous motor 2;

[0010] The inner rotor 1-2 of the first inner rotor permanent magnet synchronous motor 1 is coaxially connected with the inner rotor 2-2 of the second inner rotor permanent magnet synchronous motor 2; the outer stator 1 of the first inner rotor permanent magnet synchronous motor 1 -1 has a first slot 1-3 between two adjacent windings; the outer stator 1-2 of the second inner rotor permanent magnet synchronous motor 2 has a second slot 2 between two adjacent windings -3; the width of the first slot 1-3 and the second slot 2-3 are both 1 / 3 or 2 / 5 of the distance between the two winding slots, and the height of the slot is 1 / 2 of the height of the outer stator armature Or 3 / 5; the outer stator 1-1 of the first inner rotor permanent magnet synchronous moto...

specific Embodiment approach 2

[0011] Specific implementation mode two: as figure 1 , figure 2 , image 3 As shown, the difference between this embodiment and the first embodiment is that the widths of the openings of the first slot 1-3 and the second slot 2-3 are both 1 / 3 of the distance between the two winding slots. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Specific implementation mode three: as figure 1 , figure 2 , image 3 As shown, the difference between this embodiment and the first embodiment is that the widths of the openings of the first slot 1-3 and the second slot 2-3 are both 2 / 5 of the distance between the two winding slots. Other compositions and connections are the same as in the first embodiment.

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Abstract

The invention provides an inner rotor permanent-magnet synchronous motor with staggered grooved structure and low positioning force moment and relates to the technical field of permanent-magnet synchronous motors. The inner rotor permanent-magnet synchronous motor aims at solving the problem that the inherent positioning force moment of the existing permanent-magnet synchronous motor restricts the application range of the permanent-magnet synchronous motor in the low-speed performance and high-precision position control. The inner rotor permanent-magnet synchronous motor is characterized in that an inner rotor of a first inner rotor permanent-magnet synchronous motor and an inner rotor of a second inner rotor permanent-magnet synchronous motor are in coaxial and in-phase connection; the height of a notch is 1 / 2 or 3 / 5 of the armature height of an outer stator; and an outer stator of the first inner rotor permanent-magnet synchronous motor and an outer stator of the second inner rotor permanent-magnet synchronous motor are coaxially connected, in addition, the space phases of a center line of a first groove and a center line of a second groove on the circumference are staggered, and the staggered angle is 6 degrees and 14 degrees. The positioning force moment of the permanent-magnet synchronous motor directly influences the precision of the motor, and the performance of the permanent-magnet synchronous motor is reduced. The grooved dislocation structure is adopted, and the positioning force moment of the permanent-magnet synchronous motor can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of permanent magnet synchronous motors. Background technique [0002] The positioning torque is an inherent phenomenon of the permanent magnet synchronous motor. It is the positioning torque that exists in the non-energized state of the permanent magnet synchronous motor and is related to the position. The positioning torque includes hysteresis positioning torque and reluctance positioning torque, mainly due to the stator The existence of cogging makes the motor reluctance uneven. [0003] The positioning torque directly produces fluctuating torque in the direct drive system, which has a great influence, especially on the low-speed performance and high-precision positioning of the position control system, thus restricting the low-speed performance and high-precision position control of the permanent magnet synchronous motor. application range. Contents of the invention [0004] The purpose of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00
Inventor 江善林赵猛胡建辉邹继斌刘承军徐永向李勇尚静王骞赵博
Owner HARBIN INST OF TECH