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
CN106208879AInactive Publication Date: 2016-12-07TIANJIN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIVERSITY OF TECHNOLOGY
Publication Date
2016-12-07
Estimated Expiration
Not applicable · inactive patent

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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.
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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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