CONTROLLER FOR ELECTRIC VEHICLE

摘要

PROBLEM TO BE SOLVED: To accelerate/decelerate a vehicle with a torque close to the limit adhesion between the wheel and the rail by generating a time variation rate command of the reference frequency higher than the time variation rate of the output frequency from an inverted at the time of acceleration/deceleration regardless of the rotation frequency of an induction motor for the vehicle and then regulating the time variation rate command at the time of idling/skidding. SOLUTION: A current command generation means 4 generates a current command Ip based on a notch command and a load received from a main controller 200 and a rotational frequency Fr of an induction motor 3. A frequency time variation generating means 6 subtracts 61 the current command Ip from the output current Im of an inverter 2. Signals from a reference frequency time variation command generation means 7 and an idling/skidding detection means 8 are subjected to addition/subtraction 64 is order to control the voltage 10 through an inverter output frequency command generation means 9 before generating 11 a gate signal for the inverter 2. Upon elapsing a predetermined time after a condition Ip>Im is satisfied, a readhesion means 13 modifies the Ip based on the Im and delivers the modified Ip to the current command generation means 4.