具適應性TSK模糊估測器之感應馬達直接轉矩控制系統設計

Design of Induction Motor Direct Torque Control System with Adaptive Takagi-Sugeno-Kang Fuzzy Estimators

呂俊良(Liang-Chun Lu)

指導教授 ： 王順源

國立臺北科技大學/電資學院/電機工程系所/碩士(2012年)

摘要

本研究基於適應性參考模型系統之適應性定子磁通估測器架構，設計出適應性轉速估測器與定子電阻估測器，並將Takagi-Sugeno-Kang(TSK)模糊系統與投影演算法植入估測器中，以實現具有定子電阻調適能力之感應馬達無速度感測器驅動系統。另外，以適應性TSK模糊控制器(adaptive TSK fuzzy controller, ATSKFC)作為系統之轉速控制器，此控制器具有線上學習的功能，並且結合改良型補償控制器，以提升馬達的暫態響應。
本研究採用直接轉矩控制(direct torque control, DTC)理論實現感應馬達控制，其優點為動態響應快、系統架構簡單和容易計算，並且應用電壓空間向量調變技術，來改善傳統直接轉矩控制系統的轉矩漣波及噪音等問題。
經模擬及實驗結果證明，將適應性TSK模糊轉速與定子電阻估測器及適應性TSK模糊控制器植入感應馬達直接轉矩控制系統中，在馬達負載轉矩為 ，轉速控制範圍在36 rpm至2000 rpm時，皆具有優異的轉速動態響應且能夠準確的估測出轉速和定子電阻。

關鍵字

直接轉矩控制 ； 適應性TSK模糊控制器 ； 適應性定子磁通估測器 ； Takagi-Sugeno-Kang模糊系統

並列摘要

This thesis aims for implementing the speed and stator resistance estimator which is based on adaptive stator flux estimator of model reference adaptive system (MRAS). This structure of adaptive stator flux estimator integrates the TSK fuzzy theory and projection algorithm into the speed and stator resistance estimator in order to realize the speed-sensorless induction motor drive with real-time stator resistance identification.
In addition, an adaptive TSK fuzzy controller (ATSKFC) is developed for speed control of direct torque control (DTC) system of induction motor. This controller has on-line learning ability. Moreover, the ATSKFC with an auxiliary compensator is capable of offering more flexible compensation effort to improve transient responses for the induction motor.
The DTC is implemented in induction motor drives to gain the classic merits, including fast system responses, simple structure and low computation complexity. In order to solve the problems of torque ripple and noise caused by the conventional DTC scheme, the voltage space vector pulse width modulation (VSVPWM) technique is chosen in this research.
As demonstration in simulated and experimental results, it is observed that excellent speed tracking performance and the accurate estimation of speed and stator resistance are shown in wide speed range (36 rpm-2000 rpm).

並列關鍵字

Direct Torque Control ； Adaptive TSK Fuzzy Controller ； Adaptive Stator Flux Observer ； Takagi-Sugeno-Kang Fuzzy System

參考文獻

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