AN EMERGENCY DLC OPERATING METHOD FOR A HYBRID ELECTRIC VEHICLE

摘要

An emergency power converter operating method for a hybrid electric vehicle is provided to drive the vehicle safely by charging a 12V battery even in an emergency when a power converter does not receive a high voltage due to off of a main relay. In an emergency power converter operating method for a hybrid electric vehicle, a transmission map used in normal and abnormal driving of the hybrid electric vehicle is dualized so that engine RPM(Revolutions Per Minute) to normal vehicle speed is increased, and counter electromotive force generated from a driving motor is used as input power to charge a 12V battery and supply power to an electrical load in an emergency when a main relay is turned off.