Stator permanent-magnet double salient pole fault-tolerant motor

A permanent magnet, doubly salient pole technology, applied in the manufacture of stator/rotor body, magnetic circuit shape/style/structure, magnetic circuit static parts, etc., can solve the problems of poor phase independence, increased motor weight, large eddy current loss, etc. problems, to achieve high reliability, reduce torque ripple, and easy cooling design

Inactive Publication Date: 2007-03-28
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experiments have shown that even if permanent magnets with low magnetic energy products are used, the magnetic field of the motor is very saturated, and the magnetic load of the motor is high, so the eddy current loss is large in high-speed operation.
Also, because the specific gravity of the permanent magnet is greater than that of the silic

Method used

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  • Stator permanent-magnet double salient pole fault-tolerant motor
  • Stator permanent-magnet double salient pole fault-tolerant motor
  • Stator permanent-magnet double salient pole fault-tolerant motor

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Embodiment Construction

[0027] Taking a four-phase stator permanent magnet double-salient pole fault-tolerant motor as an example, its cross-sectional view is shown in Figure 4. The stator is composed of 8 mountain-shaped stator cores 1 and 8 permanent magnets 4. The mountain-shaped stator core 1 and rotor core 3 are punched into punching sheets with silicon steel sheets with a thickness of 0.37mm according to the shape shown in Figure 5 and the rotor shape shown in Figure 4, and enough punching sheets are laminated to form stator core 1 and Rotor core 3. The stator winding 2 is a concentrated winding, which is wound on the armature teeth with the permanent magnet 4, and each slot has only one phase winding 2, and the radially opposite two-pole windings 2 are connected in series to form a phase, and the phase and phase windings are connected by a fault-tolerant Teeth 6 are isolated, and there is no winding on the fault-tolerant teeth 6, and no permanent magnets.

[0028] The following is a rated pow...

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Abstract

The innovation points of the invention are that stator core is designed as E shape, and one fault tolerant tooth is added to each stator core. Winding is enwound on armature tooth and permanent magnet on two sides of E shaped stator core. There is no winding on fault tolerant tooth. Windings on radial opposite two poles are connected in series to constitute one phase. Fault tolerant tooth insulates phase windings. Excitation magnetic field is produced by permanent magnet. Fault tolerant tooth provides magnetic loop for permanent magnet and armature winding. The invention makes circuit, magnetic circuit, and temperature field independent between phase to phase of motor. The fault tolerant motor possesses higher reliability, and capability of operation under fault. Reducing width of gullet can reduce pulsation of torsion. Magnet core can run at inflection point of magnetization curve. The motor is especially suitable to areas of high reliability of continuous operation.

Description

technical field [0001] The invention relates to the technical fields of electrician and motor, in particular to a novel stator permanent magnet double salient pole fault-tolerant motor. Background technique [0002] With the development of social economy and science and technology, the application field of motor drive system continues to expand, such as electric steering gear (EMA), which is more and more widely used in advanced aircraft such as aircraft, missiles and spacecraft, and the rapid development of electric steering gear in recent years. Applications such as automobiles that have high requirements for continuous operation require not only small size, light weight, and high efficiency of motors, but also high reliability, strong fault tolerance, and maintenance-free motors to meet the needs of aircraft, electric vehicles Limited energy, harsh working environment and other characteristics. [0003] The switched reluctance motor has a simple and sturdy structure, ado...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K1/17H02K15/03
Inventor 孙玉坤吉敬华赵文祥朱纪洪刘国海黄振跃
Owner JIANGSU UNIV
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