Harmonic cutting method of permanent magnet fault-tolerant motor

A permanent magnet fault-tolerant and harmonic technology, used in the manufacture of motor generators, electromechanical devices, electrical components, etc., can solve the performance indicators of torque ripple and average torque constraint, the average torque of the motor decreases, and affect other phase insulation. and other problems, to achieve excellent motor performance, reduce output torque ripple, and improve performance.

CN105305734BActive Publication Date: 2018-10-09东台城东科技创业园管理有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-10-09

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Abstract

The invention discloses a harmonic wave reducing method of a permanent-magnetic fault tolerance motor. The method comprises reduction of sine harmonic waves, reduction of sine and third harmonic waves, reduction of arc cosine harmonic waves and reduction of arc cosine and third harmonic waves, harmonic wave reduction is applied to a stator or rotor independently, or harmonic wave reduction is applied to both the stator and rotor at the same time by combining different methods, and the performance of the motor is improved. The method can be applied to an iron core portion of the rotor or stator as well as to a permanent magnet portion of the rotor or stator. When the harmonic wave reducing method is applied to the permanent-magnetic fault tolerance motor, the air-gap flux density and the sine degree of counter-electromotive force waves can be effectively improved, the content of different sub-harmonic waves is reduced, and the whole torque ripples are reduced; and the operation stability of the motor is enhanced, and noises and vibration are reduced.
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Description

technical field

[0001] The invention relates to a permanent magnet fault-tolerant motor, in particular to a harmonic cutting method for a permanent magnet fault-tolerant motor, and belongs to the technical field of novel motor manufacturing. Background technique

[0002] Nowadays, permanent magnet motors have been widely used, and they play a very important role in many fields from automobiles to aerospace. This is mainly due to several salient features of permanent magnet motors, including high torque density, high efficiency, and small weight and volume. The permanent magnet motor replaces the traditional excitation winding with high magnetic energy product magnetic material, which not only eliminates the negative impact of the excitation winding, but also simplifies the mechanical structure of the motor, improves the reliability of the motor operation, and reduces the mechanical loss accordingly. Small.

[0003] Although permanent magnet motors have a series of advantag...

Examples

Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] Such as figure 2 As shown, the five-phase spoke type permanent magnet fault-tolerant motor includes a coaxial inner stator 6 and an outer rotor 2; the inner stator 6 includes armature teeth and fault-tolerant teeth 5 arranged alternately along the circumference of the motor; The armature winding 4, the fault-tolerant teeth 5 pla...