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Birotor permanent magnet motor applied to wind power generation

A permanent magnet motor and double rotor technology, applied in the direction of electrical components, electromechanical devices, etc., can solve the problems of no further research and verification in engineering practice of operation reliability, complex wind turbine system, bulky filter inductor, etc., to achieve improved The effect of copper wire utilization, material cost reduction, and small volume and weight

Inactive Publication Date: 2013-08-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of wind turbine system is relatively complicated. In order to reduce the capacity of the excitation converter, an AC excitation capacitor group is added to the power winding, and in order to improve the current waveform and improve the efficiency of power generation, a bulky filter inductor is added to the control winding side. The operational reliability of the entire unit and the engineering practice of the unit have not been further studied and verified

Method used

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  • Birotor permanent magnet motor applied to wind power generation
  • Birotor permanent magnet motor applied to wind power generation
  • Birotor permanent magnet motor applied to wind power generation

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] The invention is a double-rotor permanent magnet motor applied to wind power generation, which is suitable for a wide wind speed range, and its structure includes a motor stator and an inner and outer rotor of the motor. The motor stator includes stator core 1 and stator winding 2; the inner rotor of the motor includes inner rotor iron core 5 and inner rotor permanent magnet 4, and the outer rotor of the motor includes outer rotor iron core 7 and outer rotor permanent magnet 8; There is an inner air gap 3 between them, and an outer air gap 6 between the outer rotor and the stator. The inner and outer air gaps of the motor are respectively formed between the inner and outer rotors and the stator, and the formation of double air gaps increases the effective air gap area of ​​the motor.

[0025] The stator core and rotor core are composed of silicon stee...

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Abstract

The invention discloses a birotor permanent magnet motor applied to wind power generation. Rotors of the birotor permanent magnet motor comprise an inner rotor and an outer rotor. A stator comprises a stator core and a stator winding, wherein the inner rotor and the outer rotor share the stator, and the stator winding is wound on the stator core. The inner rotor is arranged inside the stator, an inner air gap is formed between the inner rotor and the stator, and the inner rotor comprises an inner rotor permanent magnet and an inner rotor core. The outer rotor is arranged outside the stator, an outer air gap is formed between the outer rotor and the stator, and the outer rotor comprises an outer rotor core and an outer rotor permanent magnet of which the surface is attached to the inner surface of the outer rotor core. The inner rotor and the outer rotor are fixedly connected and rotate synchronously. The magnetizing direction of the inner rotor permanent magnet and the magnetizing direction of the outer rotor permanent magnet are opposite. An inner magnetic circuit and an outer magnetic circuit are parallel and are closed through the stator core shared by the inner magnetic circuit and the outer magnetic circuit. The back-to-back annular winding can effectively reduce copper loss of the motor, enlarge an effective air gap area of the motor, and strengthen power generation capacity of a wind driven generator at a low wind speed.

Description

technical field [0001] The invention relates to a double-rotor permanent magnet generator, which belongs to the technical field of new energy wind power generation. Background technique [0002] With the massive consumption of fossil energy and the rapid growth of economy and population, the shortage of energy and the deterioration of the environment are becoming more and more serious, which has greatly promoted the development and application of renewable energy power generation technologies in countries all over the world. As one of the cleanest renewable energy sources, wind energy has attracted more and more attention from all countries in the world due to its inherent advantages in storage capacity, distribution area and pollution, and has become the fastest-growing green new energy. [0003] In the existing mainstream variable-speed constant-frequency wind power generation system, the double-fed generator set can directly output constant-frequency three-phase alternati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/02
Inventor 徐培凤刘贤兴施凯肖凤杜怿
Owner JIANGSU UNIV
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