초록 ▼

A control apparatus for controlling an electric vehicle, electric car, rolling stock and electric locomotives, which ensures that an inverter output frequency command for its inverter will not depend on the rotor frequency of the induction motor, but controls the inverter output current using a cons

A control apparatus for controlling an electric vehicle, electric car, rolling stock and electric locomotives, which ensures that an inverter output frequency command for its inverter will not depend on the rotor frequency of the induction motor, but controls the inverter output current using a constant current control system, thus preventing an overcurrent, and is capable of accelerating or decelerating the vehicle at a torque precisely corresponding to a current command. The inverter output frequency command is incremented or decremented in accordance with a frequency-to-time rate-of-change command which has been updated by the current control system. Since the inverter output frequency command is adapted basically not to depend on the rotor frequency of the induction motor, and since the output current of the inverter is controlled by the constant current control system, there are such advantages according to the invention that an overcurrent is not likely to occur, and the vehicle can be accelerated or decelerated at a torque precisely corresponding to the current command.

대표청구항 ▼

A control apparatus for controlling an electric vehicle comprising: an induction motor for driving the electric vehicle; an inverter for driving said induction motor; means for generating an output current command for said inverter; means for detecting an output current from said inverter; means for

A control apparatus for controlling an electric vehicle comprising: an induction motor for driving the electric vehicle; an inverter for driving said induction motor; means for generating an output current command for said inverter; means for detecting an output current from said inverter; means for generating a frequency-to-time rate-of-change command for an output frequency of said inverter based on a difference between said current command and a detected value of said output current; and means for generating an output frequency command for said inverter based on the frequency-to-time rate-of-change command.