Electric vehicle power conversion system

An electric vehicle power conversion system may include an exclusive discharge circuit for discharging stored charges of a smoothing condenser. The electric vehicle power conversion system may also include a discharge controller for driving a DC/DC converter if a control circuit for controlling the electric vehicle power conversion system detects a fault of an exclusive discharge circuit, such that the stored charges of the smoothing condenser may be supplied to auxiliary devices or a DC auxiliary power supply and be discharged therethrough.