Abstract
Abstract—In this paper, the affects of the newly presented structures of unified power flow controller (UPFC) on power system dynamic stability are investigated. The newly presented UPFC structure is based on indirect matrix converter (IMC) controlled by the space vector method (SVM). A non-linear modeling is accomplished for a sample power system possessing UPFC-IMC in order to investigate the affects of it on the dynamic stability. The linear model of the power system is then mentioned in state equations form defining system elements and linearizing the non-linear model around the operation point. A Heffron-Philips model is presented according to the mentioned state equations for the sample power system possesses UPFC-IMC. The accuracy of the mentioned theoretical cases is reconfirmed through the simulation results in MATLAB/Simulink.
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