Patent ID: 7940018
Filing Date: 2011-05-10
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A control system for a hybrid electric vehicle, the hybrid electric vehicle including a generator driven by an engine to generate alternating current; a motor configured to provide a drive force to propel the vehicle and configured as a generator to regenerate energy during vehicle deceleration, a rectifier to rectify alternating current generated by the generator, an inverter connected to a feed circuit between the rectifier and the motor to convert direct current in the feed circuit into alternating current, a power supply connected to a line connecting the rectifier with the inverter; a first feed circuit to supply a current to the motor via the inverter, a second feed circuit to supply a current to the motor while bypassing the inverter, wherein the second feed circuit includes an alternating current converter, the control system comprising: a current calculating module to calculate a current, the current being at least one of a current to drive the motor and a current generated by the motor; and a feed controller to selectively implement a first mode when the calculated current is below a predetermined current value and to selectively implement a second mode when the calculated current is more than the predetermined current value, wherein either the first feed circuit or the second feed circuit is used in the first mode and both the first feed circuit and the second feed circuit are used in the second mode.