Control method for multi-functional motor for electrical power system
A technology of power system and control method, applied in the direction of AC motor control, control system, control generator, etc., can solve the problems of lag, limited response speed, high cost, improve bandwidth and dynamic performance, fast dynamic response capability, Cost and volume saving effect
Active Publication Date: 2015-05-06
国网浙江省电力有限公司嵊泗县供电公司 +2
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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 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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[0017] 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.
[0018] Such as figure 1 Shown is a specific implementation of the control method of a multifunctional motor for a power system according to the present invention, and its specific implementation steps are:
[0019] (1) Collect a set of three-phase symmetrical winding current i in the electric state of the motor through the Hall sensor a i b i c , and then pass it through the abc / dq converter to get the actual current value i in the d-q coordinate system d1 and i q1 , and then collect the position signal θ of the motor through the position detector, and differentiate the position signal to obtain the feedback speed signal rotor mechanical angular velocity ω r ;
[0020] (2) The given rotational speed ω r * with the feedback speed ω r Send it to the PI control...
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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 for a multifunctional motor used in a power system. 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 power systems have put forward higher requirements on their dynamic performance, cost, volume and multi-function. [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 gener...
Claims
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IPC IPC(8): H02P23/00H02P9/00
Inventor 石成富王刚邓惠文
Owner 国网浙江省电力有限公司嵊泗县供电公司