A low-cost and environmentally friendly motor control method

A motor control, low-cost technology, applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the problem of poor adaptive ability and anti-disturbance ability, inconvenient use of position sensors, increased system cost and volume To achieve strong self-adaptability and anti-disturbance ability, save motor cost and volume, improve bandwidth and dynamic performance

Inactive Publication Date: 2017-08-15
贵州标准电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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: 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

Method used

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  • A low-cost and environmentally friendly motor control method
  • A low-cost and environmentally friendly motor control method
  • A low-cost and environmentally friendly motor control method

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Embodiment Construction

[0020] 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.

[0021] Such as figure 1 As shown, it is a specific implementation of a low-cost and environmentally friendly motor control method according to the present invention, and its specific implementation steps are:

[0022] (1) Inject high-frequency signal U in voltage space vector pulse width modulation (SVPWM) m cos(ωh t), where the subscript h represents the high-frequency component, U m is the amplitude of the injected high-frequency signal, ω h is the angular frequency of the injected high-frequency signal, t is the time, and collects 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 high-frequency current response value i in the...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14
Inventor 曾格刷郑子衡李亮张德军
Owner 贵州标准电机有限公司
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