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Rotor

A technology of rotor and magnetic steel, which is applied in the improvement field of rotor permanent magnetic field design technology, can solve problems such as difficulty, poor reliability, and complicated process, and achieve the effects of improving energy efficiency, reliable operation, and simple and feasible process

Inactive Publication Date: 2010-11-17
JIANGSU SINOPETRO SUPERBSKILL MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing, inlaying and radial fixing of tile-shaped magnetic steel are particularly complicated and difficult, and the reliability of simultaneous operation is poor.

Method used

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Experimental program
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Embodiment Construction

[0010] The present invention as figure 1 , 2 As shown, four axial grooves are set adjacent to each other at 90° on the outer cylindrical surface of the solid rotor body 1, and a plurality of rectangular magnetic steels 2 are installed in the axial grooves. In the circumferential direction of the cross section, the adjacent magnetic steels are arranged opposite to each other with the same pole, and the auxiliary magnetic steel 3 is arranged between the adjacent magnetic steels. The polarity of the auxiliary magnetic steel 3 in the circumferential direction is in the radial direction and adjacent The polarities of the main magnetic pole magnets 3 are set identically.

[0011] In order to adjust the position and quantity of the auxiliary magnetic steel 3, a magnetic pole filling block 4 is also provided. The magnetic pole filling block 4 can be set in various specifications to meet the needs of using different positions and different quantities of the auxiliary magnetic steel 3....

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Abstract

The invention relates to a rotor, in particular to a rotor of a permanent magnet synchronous motor. Rectangular steel magnets are distributed in the rotor uniformly and axially, and the uniformly-distributed steel magnets are distributed on the cross section of the rotor radially; and the adjacent steel magnets in the circumferential direction of the cross section are homopolar and opposite. The rotor is characterized in that: an auxiliary steel magnet is arranged between the adjacent steel magnets; and the polarity of the auxiliary steel magnets in the circumferential direction is in the radius direction, and the polarity of the adjacent auxiliary steel magnets is the same. In the rotor, the auxiliary steel magnets are arranged among the tangential steel magnets additionally; and due to the arrangement of the auxiliary steel magnets, the form of a magnetic structure of the rotor is changed and the energy efficiency of the motor is improved. By adjusting the number and position relation of main pole steel magnets or auxiliary pole steel magnets, intrinsic parameters of the motor can be adjusted, and performance indexes of the design can be achieved flexibly; and the rotor has the advantages of simple and feasible process and reliable running.

Description

technical field [0001] The invention relates to a rotor of a permanent magnet synchronous motor, in particular to the improvement of the rotor permanent magnetic field design technology. Background technique [0002] For a four-pole permanent magnet synchronous motor with a built-in permanent magnet in the rotor, the pole surface between two adjacent magnetic poles is 90°, and the magnetic flux of the inherent magnetic field provided by the four main magnetic poles to the air gap is not enough to meet the needs of the rotor and stator. Equilibrium relation of magnetic potential. Since the geometric size of the motor has been limited, it is impossible to meet the requirement of magnetic flux by increasing the number of magnets, which is the technical bottleneck in the design of four-pole and two-pole permanent magnet synchronous motors. [0003] Generally, for permanent magnet motors with punched cast aluminum rotors, the rotor magnetic circuit can be punched into a W-shaped...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
Inventor 陈冶频孙锋
Owner JIANGSU SINOPETRO SUPERBSKILL MACHINE