A low-cost and environmentally friendly motor control method

Abstract

The invention discloses a low-cost environment-friendly motor control method. According to the method, a three-phase symmetry winding of a motor is adopted to drive a load to operate in a power-driven state through a sliding mode controller, a prediction controller and an inverter, a motor rotor position signal estimated value is simple and easy to obtain without a position sensor through high-frequency signal injection, the motor cost and the size are further reduced, meanwhile, the adaptive ability and the anti-disturbance ability of the motor are increased through the sliding mode controller, and the bandwidth and dynamic property of a system are improved through the predication controller; besides, another three-phase symmetry winding of the motor is adopted to perform stable and normal power generation for a power supply object in a power generation state through a voltage PI (proportional-integral) regulator, a PI regulator and a converter. According to the method, the motor has rapid dynamic response capability, higher adaptive capability and anti-disturbance capability, the motor cost and size can be greatly reduced, and meanwhile, the motor integrates power-driven and power generation properties, and is environment-friendly and applicable to the severe environment.

Description

technical field [0001] The invention relates to the field of motor control technology, in particular to a low-cost and environment-friendly motor control method. 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 and technology, many motor control applications have put forward higher requirements on the cost, volume, dynamic performance and anti-disturbance of the motor control system. [0003] At present, there are still some deficiencies or areas to be improved in the motor control method: it cannot use one motor to realize the simultaneous operation of the electric motor and the power generation of the motor at the same time. The current system mostly uses multiple motors and multiple controllers to control the electric motor or power generation respectively. Single function, high cost, h...

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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: it cannot use one motor to realize the simultaneous operation of the electric motor and the power generation of the motor at the same time. The current system mostly uses multiple motors and multiple controllers to control the electric motor or power generation respectively. Single function, high cost, high energy consumption and large volume; at the same time, current motors generally require position sensors, which will further increase the cost and volume of the system, and it is inconvenient to use position sensors in some harsh environments; In addition, the traditionally adopted speed PI controller has poor self-adaptability and anti-disturbance ability when the load is electrically driven, while the traditionally adopted current PI controller has inherent hysteresis characteristics, which will affect the dynamic performance and performance of the system. Limit the increase of system bandwidth, and the response speed is limited

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