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Synchronous motor rotor

A synchronous motor and rotor structure technology, applied in synchronous motors with static armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve asynchronous operation, weak anti-disturbance ability, Oscillation and other problems are prone to occur, achieving the effects of increased strength, strong anti-disturbance capability, and easy installation

Inactive Publication Date: 2002-12-11
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, in the experiment on the experimental prototype, it was found that under the condition of the frequency converter power supply, the motor has oscillation and asynchronous operation during the frequency conversion starting process
The research results show that: due to the existence of pure reluctance torque, the anti-disturbance ability of this kind of motor is very weak in the low frequency band, and it is easy to oscillate under the action of disturbance; the single-axis torque is the root cause of the asynchronous operation of the motor, so , this ALA rotor needs to be further improved

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] The structure of the existing ALA rotor is as follows figure 1 As shown, it includes ALA section 1' with rectangular longitudinal section, fixing bolt 4', splint 5, fixing screw 6, end cover 7, fixing pin 8, rotor bearing 9 and rotor shaft 10, ALA section 1 and splint 5 form a cylinder shape. The ALA section 1' is axially symmetrically cut off a certain length of laminations to form the ALA section 1, and then the crown permanent magnet 2 is fixed on the cut-off position so that it still forms a cylinder. According to the requirements on the performance of the motor, the length Lp of the crown permanent magnet 2 can be selected between 1 / 3 and 1 / 2 of the total length L of the ALA segment. When Lp is about L / 2, the overall performance of the motor is particularly good. The crown permanent magnet 2 can be bonded to the ALA segment 1 with a stron...

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Abstract

The synchronous motor rotor consists of an ALA segment and two clamping plates across the ALA segment. The ALA segment is so shaped that one end of the rectangular longitudinal section is cut symmetrically and replaced with coronary permanent magnet to consitute one cylinder. The coronary permanent magnet may have length equal to 1 / 3 to 1 / 2, preferably about 1 / 2, rotor length. Compared with traditional patch type permanent magnet, the coronary permanent magnet is easy to machine and install and has high fixing strength. The motor with the motor has the advantages of both ALA rotor motor and permanent magnet motor.

Description

Technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a synchronous motor rotor. Background technique [0002] At present, drive motors are mainly divided into two types: DC motors and AC motors. Among them, AC motors have various structural forms such as asynchronous motors, switched reluctance motors, brush-excited synchronous motors, brushless excitable synchronous motors, and permanent magnet synchronous motors. . However, the motors with these traditional structures have their inherent defects, and it is difficult to meet the requirements of high-quality drive motors. [0003] Among the driving motors with new structure, the axial lamination anisotropic rotor (hereinafter referred to as: ALA rotor) reluctance motor is a kind of motor with great potential. Due to its special rotor structure such as figure 1 As shown (see Yi Mingjun, Research on ALA Rotor Motor and Its Control System, Master Thesis, Place of Preserv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K21/14
Inventor 辜承林吴志峤
Owner HUAZHONG UNIV OF SCI & TECH
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