Abstract: An inverter apparatus includes a capacitor to which DC voltage is applied, a power module that converts voltage of the capacitor into AC voltage through a switching element, a micro controller unit (MCU) that controls the power module, a resistor network including a plurality of resistor sets connected in series, and a board on which the MCU and the resistor network are mounted. Each of the resistor sets may include a plurality of resistors connected in parallel. The resistor network may be electrically connected between the capacitor and the power module.

Abstract: A vehicle-to-vehicle charging system using the motor drive system may include a first battery, an inverter receiving direct current power stored in the battery to convert the received direct current power into three-phase alternating current and outputting the alternating current in motor drive mode, a motor using the alternating current power output from the inverter to generate rotation force in motor drive mode, a charging power input/output end, and a controller controlling the inverter to step up or down the charging power voltage based on voltage of a second battery of the other vehicle to supply the charging power to the other vehicle through the charging power input/output end once a vehicle-to-vehicle charging mode in which the other vehicle is electrically connected and the charging power of the first battery is used to charge the second battery of the other vehicle is initiated.