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Modulation model predictive control method and system for brushless doubly-fed induction motor

A doubly-fed induction motor and motor control technology, applied in control systems, vector control systems, motor-generator control, etc., can solve problems such as poor dynamic performance and complex decoupling

Active Publication Date: 2018-11-23
CENT SOUTH UNIV
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Problems solved by technology

[0004] The present invention provides a modulation model predictive control method and system for brushless double-fed induction motors to solve the defects of complex decoupling and poor dynamic performance of traditional brushless double-fed induction motor speed regulation control methods

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  • Modulation model predictive control method and system for brushless doubly-fed induction motor
  • Modulation model predictive control method and system for brushless doubly-fed induction motor

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Embodiment Construction

[0056] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Invent a modular embodiment, not an entire embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] Brushless doubly-fed induction motor is a new type of AC motor, which has the advantages of both asynchronous motor and synchronous motor. The brushless doubly-fed induction motor eliminates the rotor-side brushes of traditional motors, which improves mechanical stability and reduces maintenance costs. The stator of the brushless double-fed induction m...

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Abstract

Embodiments of the invention provide a modulation model predictive control method and system for a brushless doubly-fed induction motor. A power-side stator flux linkage orientation control algorithmis adopted, and accurate control of the brushless doubly-fed induction motor is realized by utilizing a modulation model predictive controller; the static performance of the brushless doubly-fed induction motor speed regulation system is guaranteed, and fast dynamic response performance is obtained under the condition that the load and the speed are suddenly changed. The defect that a control scheme of an existing brushless doubly-fed induction motor is complex in decoupling and poor in dynamic performance is overcome. According to the invention, high input and output current waveform qualityis obtained through fixed switching frequency, so that higher reactive power control precision and lower torque fluctuation are obtained. The method is simple to implement and can be used for promoting the industrial application process of the brushless doubly-fed induction motor.

Description

technical field [0001] The present invention relates to the technical field of motor control, and more specifically, to a modulation model predictive control method and system for a brushless doubly-fed induction motor. Background technique [0002] Electric machinery (commonly known as "motor") refers to an electromagnetic system that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Brushless doubly-fed induction motors inherit the advantages of cage-type, wound-type induction motors and electrically excited synchronous motors, and can realize various operating modes such as self-starting, asynchronous, synchronous and double-fed, and have good starting characteristics and operating performance. Compared with ordinary doubly-fed induction motors, the motor has no brush and slip ring structure, which greatly reduces system cost and improves system stability. However, since the brushless double-fed induction motor ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/22H02P27/08
CPCH02P21/22H02P27/085
Inventor 但汉兵李璇彭涛张关关唐维溢粟梅孙尧王辉刘永露许国熊文静
Owner CENT SOUTH UNIV
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