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High-reliability electric-drive motor control method

An electric drive and motor control technology, applied in the direction of motor generator control, AC motor control, electronic commutation motor control, etc., can solve the problem of the increase of system bandwidth that affects the dynamic performance of the system, the poor adaptive ability of the speed PI controller, and the system Control poor reliability and other problems to achieve the effect of increasing self-adaptive ability and anti-disturbance ability, good tracking effect and improving reliability

Active Publication Date: 2015-04-29
绵阳赛恩新能源科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] At present, there are still some deficiencies or areas to be improved in the control methods of electric drive motors: the speed PI controller used has the disadvantages of poor self-adaptability, weak anti-disturbance ability, and general tracking effect; the current PI controller used by it has inherent The hysteresis characteristics of the system will affect the dynamic performance of the system and limit the increase of the system bandwidth, and the response speed is limited; the reliability of the system control is poor. When the motor has a winding open circuit fault, it cannot work normally, which seriously affects the output of the motor. performance

Method used

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  • High-reliability electric-drive motor control method

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention.

[0019] Such as figure 1 As shown, it is a specific implementation of a highly reliable electric drive motor control method according to the present invention, and its specific implementation steps are:

[0020] (1) Collect the current i of the motor through the Hall sensor a i b , and then pass it through the abc / dq converter to get the actual current value i in the d-q coordinate system d and i q ;

[0021] (2) The position signal θ of the motor is collected by the position detector, and the position signal is differentiated to obtain the feedback speed signal rotor mechanical angular velocity ω r ;

[0022] (3) The given rotational speed ω r * with the feedback speed ω r Send it to the fuzzy PR regulator for processing, and get the given current i with str...

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Abstract

The invention discloses a high-reliability electric-drive motor control method. According to the control method, a fuzzy PR regulator is adopted to replace a traditional speed PI controller during speed regulation, so that the self-adaptability and the anti-disturbance capacity of a system are improved, and the tracking effect is very good; a perdition controller is adopted to replace a traditional current PI controller during current regulation, so that the hysteresis characteristic of the traditional current PI controller is avoided, and the bandwidth and the dynamic property of the system are improved; finally, the reliability of the system is improved with the control method that SVM and a four-leg inverter are combined, so that the system can still run normally in case of a failure. The control method has the characteristics of quick dynamic response capability, high self-adaptability, high anti-disturbance capacity, good tracking effect, high reliability and the like and is applicable to motor drive occasions with higher requirements for the dynamic property and the reliability.

Description

technical field [0001] The invention relates to the field of motor control technology, in particular to a highly reliable electric drive motor control method. Background technique [0002] With the development of power electronics technology and power transmission technology, electric drive motor systems have been widely used. However, in recent years, with the continuous development of new energy and technology, many motor drive applications have put forward higher requirements on its dynamic performance and reliability. [0003] At present, there are still some deficiencies or improvements to be made in the control methods of electric drive motors: the speed PI controller used has the disadvantages of poor self-adaptability, weak anti-disturbance ability, and general tracking effect; the current PI controller used has inherent The hysteresis characteristics of the system will affect the dynamic performance of the system and limit the increase of the system bandwidth, and ...

Claims

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Application Information

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IPC IPC(8): H02P21/14H02P27/08
Inventor 石永丽李喜生熊龙辉
Owner 绵阳赛恩新能源科技有限公司
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