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Low-mutual-inductance fault tolerance type six-phase double-salient-pole brushless DC motor

A brushed DC motor, doubly salient technology, applied in the shape/pattern/structure of magnetic circuit, static parts of magnetic circuit, shape/pattern/structure of winding conductor, etc., can solve the problems of strong mutual inductance between phases and poor fault tolerance performance. , to achieve the effect of electrical isolation, good fault tolerance, and small mutual inductance

Active Publication Date: 2016-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a low mutual inductance fault-tolerant six-phase double-salient pole brushless DC motor in view of the problem that the six-phase double-salient pole motor in the prior art has strong mutual inductance between phases and poor fault tolerance performance

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  • Low-mutual-inductance fault tolerance type six-phase double-salient-pole brushless DC motor
  • Low-mutual-inductance fault tolerance type six-phase double-salient-pole brushless DC motor
  • Low-mutual-inductance fault tolerance type six-phase double-salient-pole brushless DC motor

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0032] The invention discloses a low mutual inductance fault-tolerant six-phase double-salient pole brushless DC motor, which comprises a stator assembly and a rotor core arranged on the same rotating shaft; the stator assembly includes a stator core, an excitation element and a six-phase stator winding; the stator The iron core is provided with stator poles, and the excitation element and the six-phase stator winding are embedded in the corresponding stator poles; the rotor iron core is provided with rotor poles;

[0033] The number of stator poles on the stator core is 12N, and the number of rotor poles on the rotor core is 10N or 14N, where N is a natural number;

[0034] The number of the excitation elements is 6N, and each excitation element is arranged across two stator poles, and adjacent excitation elements are connected with opposite polar...

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Abstract

The invention discloses a low-mutual-inductance fault tolerance type six-phase double-salient-pole brushless DC motor, and the motor comprises a stator assembly and a rotor core, which share one rotating shaft. The stator assembly comprises a stator core, excitation elements, and six-phase stator windings. The stator core is provided with 12N stator poles, wherein N is a natural number. The rotor core is provided with 10N or 14N rotor poles, and the number of excitation elements is 6N. Each excitation element is arranged to be across two stator poles, and the adjacent excitation elements are opposite in polarity. Each stator winding is formed by the series connection or parallel connection of 2N stator coils with the same phase, wherein the phase angle difference among the stator windings is 60 degrees. Each excitation element is in turn linkage with the stator coils of the corresponding two stator windings, and the polarity of each excitation element is consistent with the polarity of the stator windings in turn linkage with the excitation element. The motor achieves the electrical isolation among the six-phase stator windings, is better in fault tolerance performances, and is small in phase-switching torque pulsation.

Description

technical field [0001] The invention relates to the field of special motor body design, in particular to a low mutual inductance fault-tolerant six-phase double salient pole brushless DC motor. Background technique [0002] Double salient pole motor is a new type of motor composed of position sensor, power electronic power converter, permanent magnet or electromagnetic excitation unit, controller and motor body with salient pole stator and rotor structure. As a new type of variable reluctance motor, it has a large ratio between the maximum value and the minimum value of reluctance, and has good electromechanical energy conversion characteristics and application prospects. [0003] The traditional double salient pole motor is a three-phase motor, which adopts the 6N / 4N pole structure of the inner rotor, the number of stator poles is 6N, the number of rotor poles is 4N, and N is a natural number, indicating the number of unit motors. In order to further improve the reliabilit...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/16H02K1/17H02K3/28
Inventor 赵星周波史立伟杨岚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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