Torque control method for electro-magnetic doubly salient motors

An electrical excitation doubly salient, torque technology, applied in direct torque control, AC motor control, motor vibration suppression control and other directions, can solve problems such as large torque ripple of the motor

Active Publication Date: 2019-03-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the nonlinearity and strong coupling of the internal electromagnetic quantities of the electrically excited double salient pole motor, even if the amplitude of the phase current is constant, the torque of the motor will still have a large torque ripple

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  • Torque control method for electro-magnetic doubly salient motors
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  • Torque control method for electro-magnetic doubly salient motors

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Embodiment Construction

[0017] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...

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Abstract

Embodiments of the invention disclose a torque control method for electro-magnetic doubly salient motors, relate to the technical field of variable magnetic reluctance type motor control, and aim at inhibiting torque pulsation and enhancing the torque performance of electro-magnetic doubly salient motors. According to the control method, a rotation speed and torque double loop locked control structure is adopted, the rotation speed and torque are used as controlled volumes, and the controlled volumes are driving signals of a power converter. The control principle is described as follows: the output of a rotation speed outer ring serves as a given value of the torque; a torque observer outputs a corresponding torque value according to an acquired three-phase current signal and an acquired rotor position signal to serve as a feedback value of the torque; and the given value and feedback value of the torque undergo hysteresis control and switching state query table to output correspondingpower converter driving signals. The method is suitable for the torque performance optimization of electro-magnetic doubly salient motors.

Description

technical field [0001] The invention relates to the technical field of variable reluctance motor control, in particular to a torque control method for an electrically excited double salient pole motor. Background technique [0002] Electric excitation double salient pole motor is a commonly used reluctance motor structure. There are no windings and magnetic steel on the motor rotor, so its structure is simple and firm, easy to maintain, and high in reliability. It has good application prospects in the fields of aircraft starting / power generation systems, wind power generation systems, and new energy vehicles. However, as a reluctance motor, due to the double-salient pole structure of the stator and rotor of the electrically excited double salient motor, it has problems of large torque ripple, large noise and severe vibration, which restricts its popularization and application to a certain extent. [0003] At present, the optimization research direction of the torque perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/04H02P23/30H02P27/08
CPCH02P23/04H02P27/08H02P23/30
Inventor 张卓然陈旭于立卞张铭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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