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Exact modeling of the voltage source converter

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1 Author(s)
Lehn, P.W. ; Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

A discrete time, linear time varying model of the three-phase voltage source converter (VSC) is developed. The model is employed to determine the steady-state operating characteristics of a VSC taking all AC-DC side harmonic interactions into account. The procedure is based on an exact closed form solution of the system equations and does not rely on iterative techniques. The steady-state operating curves from the proposed model are compared with those derived from a conventional continuous time dq-frame model. The accuracy of the conventional continuous time model is shown to be highly dependent on the converter's duty cycle

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Power Delivery, IEEE Transactions on  (Volume:17 ,  Issue: 1 )