三相感應馬達直接轉矩控制之模擬與分析

Simulation and Analysis of Direct Torque Control Induction Motor

林俊志(Chun-Chih Lin)

指導教授 ： 陳宗成

國立虎尾科技大學/電機資訊學院/電機工程研究所在職專班/碩士(2011年)

https://doi.org/10.6827/NFU.2011.00023

摘要

摘要
本文利用VisSim模擬軟體對於三相感應馬達直接轉矩控制(Direct Torque Control)進行分析。文中針對直接轉矩控制方法的架構，包括電壓空間向量調變、電壓向量切換表、磁滯比較器、磁通估算法部份加以說明。本文除了模擬直接轉矩控制法則的特性之外，並且與磁場導向控制法進行感應馬達轉速、轉矩、磁通響應的相互比較。其次對於馬達電阻參數進行探討。在不影響大部份馬達正常運轉的情況下，磁通估算法的定子電阻參數可以加以省略，使直接轉矩控制法更簡單，且完全不受馬達參數影響。

關鍵字

直接轉矩控制 ； 磁場導向控制 ； 磁滯比較器 ； 電壓向量切換表

並列摘要

Abstract
VisSim, a visual language for modeling and simulating nonlinear dynamic system of Visual Solutions company, has been properly applied to imitate and analyze the rule of direct torque control(DTC) for three-phase induction motor in this thesis. The structures of the DTC have been explained in this thesis, including voltage space vector modulation, hysteresis comparator, voltage vector switching table, the rule of flux estimating . Besides imitating the rule of DTC system characteristic in this thesis, and compared with the field orietnd control(FOC)system, including the respond of three-phase induction motor rotational speed, torque, flux. Secondly study of the discussion to the motor resistance parameters. In case of not influencing most motors normal running, the stator resistance parameter can be omitted for the rule of flux estimating. It is simpler to make the rule of DTC, and is totally free of motor parameters.

並列關鍵字

Direct torque control ； Field oriented control ； Hysteresis comparator ； Voltage vector switching table.

參考文獻

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