Patent ID: 6431297
Filing Date: 2002-08-13
Classification: B60L,Y02T

Abstract:
An apparatus for driving and controlling a car, comprising:a large gear directly connected to a wheel shaft; small gears meshing with the large gear; AC motors connected to the small gears, respectively; standard inverters connected to the AC motors, respectively, for supplying power thereto, DC inputs sides of the inverters being connected in series in multiple stages to a high-voltage DC power source so as to divide a voltage of the DC power source into standard voltage for each of the inverters; and an inverter controller provided for each of the inverters, for receiving a DC source voltage value detected on a power-source transmission line and an input voltage value detected at the inverter, finding a difference between the input voltage value and a quotient obtained by dividing the DC source voltage value by the number of the inverters, and correcting an output torque command for the inverter according to the difference.