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Method for controlling asynchronous motor variable-frequency speed control system based on active-disturbance-rejection controller

An active disturbance rejection controller and asynchronous motor technology, applied in control systems, control generators, vector control systems, etc., can solve problems such as torque ripple, limit system speed regulation range, etc., to solve the impact of decoupling performance, The effect of good robustness and strong anti-interference ability

Inactive Publication Date: 2016-12-07
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, since the direct torque control generally adopts the bang-bang control of the torque, although a fast dynamic response can be obtained, it brings the disadvantage of torque ripple, which limits the speed regulation range of the system

Method used

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  • Method for controlling asynchronous motor variable-frequency speed control system based on active-disturbance-rejection controller
  • Method for controlling asynchronous motor variable-frequency speed control system based on active-disturbance-rejection controller
  • Method for controlling asynchronous motor variable-frequency speed control system based on active-disturbance-rejection controller

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] The method for controlling the frequency conversion speed regulation system of an asynchronous motor based on an ADRC controller in the present invention is characterized in that it includes the following steps:

[0028] Step A, construct the dynamic mathematical model of asynchronous motor;

[0029] Step B, overview of ADRC;

[0030] Step C, the design of the asynchronous motor control system based on the active disturbance rejection controller;

[0031] Step D, simulation analysis.

[0032] See attached figure 1 , the present invention is made up of hardware equipment and computer software. The hardware equipment includes upper computer and monitoring software (WinCC), S7-300PLC, Micro Master Vector (MMV) frequency converter, asynchronous motor and photoelectric encoder, such as figure 1 shown. Active disturbance rejection controller is applied in freque...

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Abstract

A method for controlling an asynchronous motor variable-frequency speed control system based on an active-disturbance-rejection controller belongs to the technical field of electric power system asynchronous motor variable-frequency speed control system, and comprises the following steps: step A, constructing a dynamic mathematical model of an asynchronous motor; step B, summarization of the active-disturbance-rejection controller; step C, designing an asynchronous motor control system based on the active-disturbance-rejection controller; and step D, simulated analysis. Beneficial effects of the present invention are: first, a defect of poor parameter robustness of a general vector control system is overcome, an effect of parameter time variable on vector control system decoupling performance and speediness and stability contradiction existed in the general vector control system are effectively solved; and second, the active-disturbance-rejection controller does not depend on a concrete mathematical model of a controlled system and has a strong disturbance rejection capability on internal and external disturbance. A simulation result indicates that the active-disturbance-rejection controller has uncertainty for a model and good robustness for noise measurement, and has a good dynamic property.

Description

technical field [0001] The invention belongs to the technical field of frequency conversion and speed regulation control systems of asynchronous motors in power systems, in particular to a novel control method for induction motor frequency conversion and speed regulation systems realized by an active disturbance rejection controller. Background technique [0002] With the development of power electronics technology, the frequency conversion speed regulation system of asynchronous motor is more and more widely used, and its performance is getting better and better. It has the advantages of simple structure, wide speed regulation range, safety and reliability. In the 1970s, F. Blaschke of Siemens AG of the Federal Republic of Germany proposed "the control principle of field orientation of induction motors". For this reason, vector transformation control technology was born. In the 1980s, in the theory of direct torque control, direct torque control used torque feedback to dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/24
Inventor 周雪松黄天翔周从容马幼捷高志强
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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