APPAREIL ET PROCEDE DE COMMANDE D'UN HACHEUR DE COURANT POUR UN VEHICULE DE TRANSPORT

摘要

There is disclosed a programmed microprocessor control apparatus and method for a transit vehicle electric motor through operation of a chopper apparatus. The microprocessor program controls the motor braking effort in brake mode through operation of the brake resistors and the motor tractive effort in the power mode through the motor field shunt operation.