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This paper presents predictive optimal control applied to field oriented controlled induction machine drives employing a matrix converter with input current control and near unity input power factor. The method uses a discrete-time model of the converter system to predict the future values of the output and input currents for all the 27 possible output voltage vectors generated by the matrix converter. The optimal controller minimizes output current (allowing the establishment of field oriented control) and input current errors using a cost functional with adequate weights. The performance of the proposed predictive control is validated by numerical simulations, which are also compared to Venturini modulation.
Date of Conference: 4-7 June 2007