Abstract

This paper deals with the development of a Pspice model for a PWM induction motor drive system that allows prediction of overvoltage and conducted EMI in the presence of long feeders. The motor has been represented by both d-q and high frequency models whereas a lumped parameters model has been used for the cable. A detailed model of the IGBT inverter has also been included. Simulations have been carried out for different cable lengths and inverter voltage rise times to investigate the effects of these on overvoltage at motor terminals and common mode emissions in the system. Results obtained from an experimental system are also presented.

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