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Double-channel fault tolerant type flux switch permanent magnet motor and control method thereof

A magnetic flux switching, permanent magnet motor technology, applied in the direction of motor control, single motor speed/torque control, control system, etc., can solve the problems of reduced motor reliability, easy failure, application restrictions, etc., to achieve reduced torque Effects of pulsation, performance enhancement, and high power density

Inactive Publication Date: 2008-04-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since its permanent magnets are installed on the surface of the rotor, when the motor is rotating at high speed and heats up, it is prone to failure due to its difficulty in cooling, resulting in a decrease in the reliability of the motor. Therefore, it is used in the field of high reliability (its main application background). Applications are very limited
To sum up, these two fault-tolerant motors, which are currently concerned by the academic community, have disadvantages in terms of power density and reliability while having high fault-tolerant performance.

Method used

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  • Double-channel fault tolerant type flux switch permanent magnet motor and control method thereof
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  • Double-channel fault tolerant type flux switch permanent magnet motor and control method thereof

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Embodiment Construction

[0035] Both the stator and the rotor of the dual-channel fault-tolerant magnetic flux switching permanent magnet motor of the present invention adopt a double salient pole structure. Figure 1 shows a dual-channel fault-tolerant flux-switching permanent magnet motor with 12 poles in the stator and 10 poles in the rotor. The stator is composed of a stator core and a permanent magnet. The permanent magnet is sandwiched between the stator tooth core along the circumference. The iron core and the permanent magnet and the machine base adopt an interference fit to ensure that the position of the iron core and the permanent magnet is fixed. There are neither windings nor permanent magnets on the rotor. The stator and rotor cores are made of laminated silicon steel sheets. The permanent magnets with windings and armature teeth are combined into a whole. The permanent magnets are magnetized alternately along the tangential direction of the circumference.

[0036]The innovation of the pr...

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Abstract

A dual-channel fault tolerant flux switch permanent magnet motor is a novel stator permanent magnet motor. The fault tolerant motor adopts a doubly salient structure, and the inner loop of the stator (1) is provided with salient poles evenly. Permanent magnets (3) are arranged onto the circle of the stator in pairs, which can be cooled easily; the rotor (2) adopts a simple salient structure, without windings nor permanent magnets. The fault tolerance motor integrates the advantages of a switch magnet resistance motor and a rotator permanent magnet fault tolerance motor, and has the advantages of high credibility, high power density, and preferable operating capacity when a failure occurs. The invention provides a fault tolerance strategy, and can improve the electromagnetic performance of the motor when a failure occurs by adjusting the phase and amplitude of non-fault phase current; the invention can accomplish the torque output in the approximately normal running status and have high theory and practical value.

Description

technical field [0001] The invention relates to the technical fields of electrician, motor and control, in particular to a novel stator permanent-magnet fault-tolerant motor and its control method, which is applicable to the high-reliability field with strict requirements on the continuous operation of the system. Background technique [0002] With the continuous expansion of the application range of motors in military, industrial, civil and other fields, the reliability of motor drive systems has received more and more attention from scholars in related fields, especially in aerospace, military equipment, mine rolling steel, etc. Reliability is particularly important when the operation has high requirements. These application fields require the motor drive system to have high reliability and strong fault-tolerant operation capability. [0003] As far as the technical level is concerned, the ways to improve the reliability of the system can be mainly divided into two method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/24H02K1/27H02K3/28H02P6/08H02P6/10H02P29/028
Inventor 程明赵文祥花为朱孝勇
Owner SOUTHEAST UNIV
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