Patent ID: 6359416
Filing Date: 2002-03-19
Classification: H02P,Y10S

Abstract:
An apparatus to be used with a current regulator and an inverter for supplying current to an induction machine on supply lines wherein the regulator includes a summer and a PI compensator, the summer for subtracting a predicted current signal from a current command signal to generate an error signal, the compensator receiving the error signal and modifying the error signal to generate the forcing signal, the forcing signal provided to the inverter for controlling inverter operation, the apparatus comprising:a sampler linked to the supply lines for sampling actual current and providing a sampled current signal; a predictor that receives the sampled current signal and the forcing signal and mathematically combines the sampled and forcing signals to generate a predicted current signal; and an adapter that receives the predicted current signal and the sampled signal and, when the predicted signal is greater than the sampled signal, causes the predictor to reduce the predicted signal and, when the predicted signal is less than the sampled signal, causes the predictor to increase the predicted signal.