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Quadrupole permanent magnet synchronous motor rotor

A technology for permanent magnet synchronous motors and rotors, applied to synchronous machine parts, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of low welding strength between the shaft and the iron core and cannot meet the overall performance, and achieve Guarantee the strength, guarantee the effect of operation, and overcome the effect of risk

Active Publication Date: 2014-02-26
山西北方机械控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a permanent magnet synchronous motor solid rotor magnetic pole core structure in order to solve the situation that the welding strength between the shaft and the iron core of the four-pole three-phase AC permanent magnet synchronous motor is low and cannot meet the overall performance

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  • Quadrupole permanent magnet synchronous motor rotor
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  • Quadrupole permanent magnet synchronous motor rotor

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Embodiment

[0023] A kind of quadrupole permanent magnet synchronous motor rotor of the present invention, as figure 1 , 2 As shown, it includes a rotating shaft 11, a key 10, an iron core 9, a magnetic steel 2, a non-magnetic material insulating baffle 1, a collar 6, a copper sheet 8, a slot wedge 5 and a hoop 7;

[0024] Such as Figure 5 As shown, an annular groove is processed in the middle section of the rotating shaft 11, and four axially slotted and circumferentially evenly distributed key grooves are processed on the annular groove, and two rows of eight circumferentially evenly distributed misplaced threaded holes are processed on the side walls of the rotating shaft 11 at both ends of the annular groove. ;

[0025] Such as image 3 , 4 As shown, the center of the core 9 is a circular cylinder with an inner diameter and a length matching the annular groove of the rotating shaft 11, which is cut into four fan-shaped sub-pieces with the same structure. The outer wall of each fa...

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Abstract

The invention relates to a quadrupole permanent magnet synchronous motor rotor, and belongs to the technical field of three-phase alternating current synchronous motors. According to the quadrupole permanent magnet synchronous motor rotor, an iron core is arranged outside a rotating shaft in a sleeved mode and fixed through a screw, and the iron core and the rotating shaft are positioned in the circumferential direction through keys. A piece of magnetic steel is inserted into a rectangular groove between every two adjacent fan-shaped parts of the iron core. A groove wedge is inserted into the outside of each rectangular groove for positioning in the radial direction, and non-magnetic material insulation barriers are fixed at the two ends of each rectangular groove for positioning in the axial direction. A copper piece is inserted into a copper piece mounting groove in each fan-shaped part of the iron core. All the fan-shaped parts of the iron core are sleeved with a lantern ring, and the lantern ring is welded and fixed to the copper pieces and the groove wedges at the same time to form a starting cage. A hoop is installed on a step formed by a fan-shaped junction board of the iron core and the rotating shaft in a hot shrinkage mode. According to the quadrupole permanent magnet synchronous motor rotor, by adopting the structure that the hoop is added outside and the screw is added inside for fixing the iron core, stress concentration of the shaft can be reduced effectively, risks caused by welding are overcome, the strength of the shaft is guaranteed, and the overall operating effect of a motor is guaranteed.

Description

technical field [0001] The invention relates to a four-pole permanent magnet synchronous motor rotor, which belongs to the technical field of three-phase AC synchronous motors. Background technique [0002] At present, the consensus in the motor industry is that the three-phase AC permanent magnet synchronous motor has the characteristics of high efficiency and flat efficiency curve, high power factor and high efficiency, and is superior to the three-phase asynchronous motor. However, three-phase AC permanent magnet synchronous motors also have many problems. At present, four-pole three-phase AC permanent magnet synchronous motors cannot use magnetic isolation sleeves for magnetic isolation due to the large demand for magnetic steel. In the design of synchronous motors, it is common to weld the rotating shaft and the iron core, which makes the connection strength between the rotating shaft and the iron core low. In addition, due to the deformation of the rotating shaft due ...

Claims

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Application Information

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IPC IPC(8): H02K21/02H02K1/27H02K1/28
Inventor 武文虎王志林李有生王跃军
Owner 山西北方机械控股有限公司
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