Steady state analysis of an inverter-fed induction motor employing natural commutation

Singh, B. ; Naik, K. B. ; Goel, A. K. (1990) Steady state analysis of an inverter-fed induction motor employing natural commutation IEEE Transactions on Power Electronics, 5 (1). pp. 117-123. ISSN 0885-8993

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Official URL: http://ieeexplore.ieee.org/document/46006/

Related URL: http://dx.doi.org/10.1109/63.46006

Abstract

A steady-state analysis of a three-phase induction motor fed by a DC link inverter commutated by machine-induced EMF (electromotive force) is presented. The active power requirement of the motor is met by the DC link, and the necessary reactive power is supplied by a capacitor bank connected at the motor terminals. A generalized analytical model is developed for no-load as well as loaded conditions of the motor. The steady-state performance of the motor is numerically evaluated. The computed results are compared with corresponding experimental results for a 4 HP squirrel cage induction motor. The relevant oscillograms of voltage and current waveforms of the inverter and motor are presented and discussed.

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