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Radio and axial hybrid magnetic circuit permanent-magnet synchronous-side rotor motor

A permanent magnet synchronous, rotor motor technology, applied in synchronous motors with stationary armatures and rotating magnets, synchronous machines, synchronous machine parts, etc. The effect of rapid increase in eddy current loss, elimination of ends, and increased torque

Inactive Publication Date: 2015-07-01
HARBIN INST OF TECH
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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 provide a radial and axial mixed magnetic circuit permanent magnet synchronous side rotor motor, in order to solve the eddy current of the motor core when the existing permanent magnet motor increases the power density by increasing the speed and the number of pole pairs The problem that the loss will increase rapidly and limit the improvement of the efficiency of the motor

Method used

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specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 and figure 2 As shown, it consists of stator 1 and rotor 2;

[0013] The stator 1 is composed of a solid ring 1-1 and a plurality of windings 1-2; the solid ring 1-1 has a plurality of rectangular ring slots 1-3 along the radial direction of the ring, and all the rectangular ring slots 1-3 are in the The upper circumference of the solid ring 1-1 is uniformly arranged; each rectangular ring groove 1-3 is embedded with a winding 1-2, and the material of the solid ring 1-1 is soft magnetic composite material SMC; the rotor 2 is made of magnetically conductive Outer ring 2-1, magnetically conductive side disc 2-2, magnetically conductive inner ring 2-3, and multiple pieces of magnetic steel 2-4; magnetically conductive inner ring 2-3 is arranged on magnetically conductive outer ring 2 Inside -1, the outer circular edge of the magnetically conductive side disc 2-2 is covered on the left port of the magnetically conductive...

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Abstract

The invention discloses a radio and axial hybrid magnetic circuit permanent-magnet synchronous-side rotor motor and belongs to the technical field permanent-magnet motors with an aim to solve problems that improvement of motor efficiency is limited due to rapid increasing of eddy current loss of motor cores when power density of existing permanent-magnet motors are increased by increasing rotating speed and pair of poles. The radio and axial hybrid magnet circuit permanent-magnet synchronous-side rotor motor is characterized in that a winding is embedded in each rectangular ring groove, and a solid circular ring is made of soft magnetic composite (SMC); the outer circular edge of a magnetic-side wafer covers the left port of a magnetic outer circular ring, and the internal circular edge of the magnetic-side wafer covers the left port of a magnetic inner circular ring; magnetic poles of magnetic steel on the magnetic outer circular ring and the magnetic inner circular ring are identical to that of magnetic steel on the aligning magnetic-side wafer; a rotor sheaths a stator from the outer periphery with clearance so as to enable the axial lead of the rotor to be coincided with that of the stator. An axial magnetic field and a radial magnetic field are allowed to pass through a main magnetic circuit simultaneously, and the pair of poles is allowed to be increased without causing rapid increasing of eddy current loss.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet motors. Background technique [0002] Permanent magnet synchronous motors and their servo systems are widely used in industrial drive and servo control fields due to their small size, high efficiency, and good dynamic response characteristics. The traditional motors with radial magnetic circuit and the disk motor with axial magnetic circuit that are common at present usually increase the motor speed or increase the number of pole pairs to increase the power density of the motor. However, with the increase of the motor speed and the number of pole pairs, The eddy current loss of the motor core will increase rapidly, which limits the improvement of the motor efficiency. Also, these motors do not generate torque at the end of the winding, so the winding utilization is low. In addition, the motor stator core is usually made of laminated silicon steel sheets, and the axial thermal conductivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/22H02K21/02
CPCH02K21/227H02K21/026
Inventor 江善林徐永向邹继斌屈欢李勇王骞王宝超
Owner HARBIN INST OF TECH
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