Abstract: A system for operating a hybrid electric vehicle includes a hybrid starter generator generating a counter-electromotive force while rotating with an engine when conditions are satisfied, including where starting of the engine is secured, a main relay is turned off, and an engine clutch is opened according to a request for reverse traveling, in a state where a component of a high-voltage system is failed, a motor reversely rotating using the counter-electromotive force of the hybrid starter generator, an electronic load component operated using the counter-electromotive force of the hybrid starter generator, and a controller determining an engine speed required by load output values according to operations of the motor and the electronic load component, and restricting the operation of the motor or the electronic load component according to a determined engine speed.

Abstract: The present disclosure is to provide a method of controlling limp home driving of a hybrid vehicle. When the hybrid vehicle enters into a limp home driving mode with a starter generator malfunctioning, a motor control unit performs constant voltage control on counter electromotive force of a motor, so that a constant voltage is supplied to high-voltage components as an input voltage, thereby ensuring that high-voltage components are protected and operable.

Abstract: A method of inspecting the safety of an electric vehicle charger includes: fastening a charger connector between a charger side and a vehicle side; checking for an abnormality in the charger and the charger connector by checking for a leakage current; raising a voltage of a quick charger to a voltage of a high-voltage battery of a battery unit by closing a high-voltage battery main relay; charging a motor inverter capacitor of an inverter unit connected to the battery unit by closing the high-voltage battery main relay; opening the high-voltage battery main relay and then closing a quick charge relay of a charging unit connected to the inverter unit; checking whether normal charge is enabled by requesting a normal charge voltage and a normal charge electric current from the vehicle side to the charger side; and forcedly discharging a voltage with which the motor inverter capacitor is charged.

Abstract: A method of inspecting the safety of an electric vehicle charger includes: fastening a charger connector between a charger side and a vehicle side; checking whether there is an abnormality in the charger and the charger connector by checking whether there is a leakage current; raising a voltage of a quick charger to a voltage of a high-voltage battery of a battery unit by closing a high-voltage battery main relay; charging a motor inverter capacitor of an inverter unit connected to the battery unit by closing the high-voltage battery main relay; opening the high-voltage battery main relay and then closing a quick charge relay of a charging unit connected to the inverter unit; checking whether normal charge is enabled by requesting a normal charge voltage and a normal charge electric current from the vehicle side to the charger side; and forcedly discharging a voltage with which the motor inverter capacitor is charged.

Abstract: A charging state display controller recognizing and displaying that a high voltage battery of an electric vehicle is being used, may include a receiving unit receiving operation signals output from controllers using the high voltage battery when the high voltage battery is in a using mode, a signal determination unit determining whether or not the number of the operation signals received by the receiving unit satisfies a predetermined condition, and a control unit controlling on/off of a charging state indicator in accordance with whether or not the number of operation signals satisfies the predetermined condition.

Abstract: A charging state display controller recognizing and displaying that a high voltage battery of an electric vehicle is being used, may include a receiving unit receiving operation signals output from controllers using the high voltage battery when the high voltage battery is in a using mode, a signal determination unit determining whether or not the number of the operation signals received by the receiving unit satisfies a predetermined condition, and a control unit controlling on/off of a charging state indicator in accordance with whether or not the number of operation signals satisfies the predetermined condition.