A control method for a multifunctional motor used in a power system

Abstract

The invention discloses a control method for a multi-functional motor for an electrical power system. The control method uses a suit of three-phase symmetrical coils of the motor to electrically drive load to run through a PI controller, a predicting controller and an inverter, the speed regulating performance is good, and moreover, because a traditional current PI controller is replaced by the predicting controller, the hysteresis characteristic of the traditional current PI controller is solved, and the band width and dynamic performance of the system are improved; another suit of three-phase symmetrical coils of the motor are used for sending electric states to a power supply object to generate power stably and normally through a voltage regulator, a current regulator and a converter. The control method for the multi-functional motor for the electrical power system is featured with quick dynamic response, low cost, small volume, energy saving, various function and the like, meanwhile, the control method for the multi-functional motor for the electrical power system integrates electromotion with power generation, and the control method for the multi-functional motor for the electrical power system is suitable for the electric / power generation field of motors for electric power systems which have high dynamic performance, cost and volume requirements.

Description

technical field [0001] The invention relates to the field of motor control technology, in particular to a control method of a multifunctional motor used in a power system. Background technique [0002] With the increasing development of power electronic technology and electric drive 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 power systems have put forward higher requirements on their dynamic performance, cost, volume and multi-function. [0003] At present, the motor control method used in power system still has some shortcomings or needs to be improved: it cannot use one motor to realize the simultaneous operation of motor and power generation of the motor at the same time, and the current system mostly uses multiple motors and multiple controllers to perform motoring or power generation respectively. control, generally ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are still some deficiencies or areas to be improved in the motor control method used in power systems: it cannot use one motor to realize the simultaneous operation of electric motor and power generation at the same time, and the current system mostly uses multiple motors and multiple controllers to perform electric power or power generation respectively Control generally has a single function, high cost, high energy consumption, and large volume; and the current PI controller used when electrically driving the load has inherent hysteresis characteristics, which will affect the dynamic performance of the system and limit the increase in system bandwidth. Response speed limit

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