Intelligent control method of electrically-driven motor

Abstract

Disclosed in the invention is an intelligent control method of an electrically-driven motor. According to the control method, with two sets of windings of the motor, the load is driven to be operated by the motor state by using a PI controller, an integral limiter, a prediction controller and an inverter; and the speed adjustment performance is good. The prediction controller is used for replacing the traditional current PI controller, so that the defect of the hysteresis characteristic of the current PI controller is overcome and the band width and dynamic performances of the system are improved. Besides, functions of redundancy communication, fault diagnosis, position signal fault detection and calibration are added and thus the winding open-circuit and short-circuit existence at the control system or position signal faults can be diagnosed and processed respectively. According to the invention, the method has characteristics of simpleness, easy implement, and high intelligence and reliability and the like; fault-tolerant control of the system open circuit, short circuit or position signal fault can be realized well; and the method is suitable for power driven occasions with high requirements of the dynamic performance and reliability.

Description

technical field [0001] The invention relates to the field of motor control technology, in particular to an intelligent control method for an electric drive motor. Background technique [0002] With the development of power electronics technology and power transmission technology, the motor control system has been widely used. However, in recent years, with the continuous development of new energy, power systems and technology, many motor control applications for electric drive systems have put forward higher requirements for their dynamic performance, reliability and intelligence. [0003] At present, there are still some deficiencies or areas to be improved in the motor control method used in the electric drive system: its reliability is not high enough, and when the system has a winding open circuit, short circuit or position signal failure, it cannot be detected and diagnosed well, and high fault-tolerant operation cannot be achieved. characteristics; and the current PI ...

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Problems solved by technology

[0003] At present, there are still some deficiencies or areas to be improved in the motor control method used in the electric drive system: its reliability is not high enough, and when the system has a winding open circuit, short circuit or position signal failure, it cannot be detected and diagnosed well, and high fault-tolerant operation cannot be achieved. characteristics; and the current PI controller used when it drives the load electrically has inherent hysteresis characteristics, which will affect the dynamic performance of the system and limit the increase of the system bandwidth, and the response speed is limited

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