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High speed switch reluctance motor rotor with soft magnetic materials

A soft magnetic material and high-speed switch technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problems of limited application range, torque ripple, and lack of bidirectional self-starting ability, etc., to achieve improved Lower limit value, small eddy current effect, and extended current conduction range

Active Publication Date: 2013-04-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the rotor structure of the existing two-phase 4 / 2-pole, switched reluctance motor does not have bidirectional self-starting capability, and has a relatively prominent torque ripple problem, which limits its application range

Method used

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  • High speed switch reluctance motor rotor with soft magnetic materials
  • High speed switch reluctance motor rotor with soft magnetic materials
  • High speed switch reluctance motor rotor with soft magnetic materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0029] see figure 1 , figure 2 and image 3 , a high-speed switched reluctance motor rotor with soft magnetic materials, including a shaft 1, a rotor salient pole 2 and a rotor yoke 5, a salient pole groove 3 is set on each of the two rotor salient poles 2, and two salient pole concave poles The groove 3 is symmetrical (symmetrical to the axis 1 ), the salient pole groove 3 is composed of two symmetrical grooves, and the soft magnetic material 4 of 40-50% of its volume is arranged in the salient pole groove 3 .

[0030] In this way, when the rotor runs at high speed, the centrifugal force is used to keep the soft magnetic material in a groove of the salient pole groove 3; when the motor rotates in reverse, the soft magnetic material changes position with the direction of the centrifugal fo...

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Abstract

The invention discloses a high speed switch reluctance motor rotor with soft magnetic materials. The high speed switch reluctance motor rotor with the soft magnetic materials comprises a shaft, rotor salient poles and a rotor yoke. Two symmetrical salient pole grooves formed by two symmetrical grooves are respectively formed in the rotor salient poles and provided with soft magnetic materials occupying 40-50 percent of the salient pole grooves. The high speed switch reluctance motor rotor with the of the soft magnetic materials is capable of increasing torque output through influence of the oft magnetic materials to magnetic conductance and magnetic flux changes at air gap of the edge of the salient poles, using strong centrifugal force to keep the soft magnetic materials inside half of the grooves through the rotor structure during high speed operation of the motor, enabling the soft magnetic materials to be automatically changed at the salient poles along with the rotation of the motor and achieving duel-direction self-starting.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a high-speed switched reluctance motor rotor with soft magnetic materials. Background technique [0002] The switched reluctance motor is different from the traditional AC and DC motor. Its main working principle is: follow the "minimum reluctance principle" and rely on the reluctance and inductance changes at different rotor positions to generate electromagnetic torque. The motor body has the characteristics of double salient pole structure. According to the number of salient poles of the stator and rotor, it can be made into two-phase, three-phase, four-phase and higher phase reluctance motors, while the two-phase 4 / 2 pole, switch magnetic Resistance motors are more suitable for high-speed and ultra-high-speed drive fields. [0003] Compared with other types of high-speed motors, high-speed switched reluctance motors have remarkable features such as simple and solid structure, hi...

Claims

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Application Information

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IPC IPC(8): H02K1/24
Inventor 张海军王曙鸿
Owner XI AN JIAOTONG UNIV
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