| Abstract |
A new current source inverter-fed induction machine drive is presented, using three capacitors connected to the motor. In order to minimize current and voltage harmonics in the machine, a P.W.M. strategy has been developed; the inverter firing angles have been calculated as a function of speed and motor parameters, to avoid harmonics amplification in the resonant frequency range. However, self excitation may happen because of the interaction between capacitors and the magnetizing inductances of the motor. A field oriented control scheme, with either torque and flux loops or current compensation terms has been tested in simulation, giving interesting dynamic behaviour. |
