| Summary: | 碩士 === 國立雲林科技大學 === 電機工程系碩士班 === 101 === Operation of a three-phase induction motor under several conditions of voltage unbalance is studied in this thesis using three simulation tools: the Type-56 three-phase induction machine (IM) module and the universal machine(UM) module of the Alternative Transients Program(ATP), and the three-phase induction motor module of Matlab/Simulink. Since the Type-56 IM module is a newly released program, it will be described in more details, and its simulation results are compared and verified by those obtained from the UM and Matlab/Simulink modules. The voltage unbalance conditions studied in this thesis include (1)simple three-phase voltage unbalance; (2) steinmetz connection; (3)single-line disconnect; (4)one-line grounding fault. In addition to verifying the results obtained from the UM and Matlab/Simulink modules, calculation results given by an analytical method are also provided for comparisons.
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