Large Induction Motor Drive Performance Comparison

Comparative analysis of the performance of a motor drive with different controller strategies such as Volt-age/frequency (V/F), Proportional, Integral (PI), and Neural Network (NN) controllers to follow speed and torque variations is presented. Bézier profiles are used to reduce peaks in voltage an current when the motor conditions change. Details on the construction of a 84 pulse Voltage Source Converter are provided to follow amplitude, phase and frequency required to drive a large motor. Very low total harmonic distortion is proved and harmonic spectrums illustrate the use of a power filter is evaded.