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

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3 Author(s)
Singh, Bhim ; Dept. of Electr. Eng., Roorkee Univ., India ; Naik, K.B. ; Goel, A.K.

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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Power Electronics, IEEE Transactions on  (Volume:5 ,  Issue: 1 )