Abstract: Disclosed is a charging apparatus to supply a power to a battery of an electric vehicle. The charging apparatus includes a bidirectional power conversion unit including three pairs of switching device groups and having one end connected to a power system and an opposite end; an energy storage unit connected to the opposite end of the bidirectional power conversion unit to store the DC power output through the opposite end of the bidirectional power conversion unit; a multi-DC power output unit to output the DC power to an outside in the first inverse operation mode; and a charging control unit to detect a charging condition of the charging apparatus. The switching device groups serve as buck-converters, respectively, in the first inverse operation mode to convert the DC power into another DC power having a level different from a level of the DC power.

Abstract: Disclosed is a charging apparatus to supply a power to a battery of an electric vehicle. The charging apparatus includes a bidirectional power conversion unit including three pairs of switching device groups and having one end connected to a power system and an opposite end; an energy storage unit connected to the opposite end of the bidirectional power conversion unit to store the DC power output through the opposite end of the bidirectional power conversion unit; a multi-DC power output unit to output the DC power to an outside in the first inverse operation mode; and a charging control unit to detect a charging condition of the charging apparatus. The switching device groups serve as buck-converters, respectively, in the first inverse operation mode to convert the DC power into another DC power having a level different from a level of the DC power.

Abstract: An apparatus for controlling a driving signal for a motor for converting an AC input signal to an instantaneous DC signal, thereby achieving a desirable control, which is capable of preventing a phase delay and corresponding a sudden signal change by converting the AC input signal to the instantaneous DC signal and controlling to correct a difference value between the DC signal and a reference signal.