A vehicle control device comprising: a converter configured to convert alternating-current power generated by a generator into direct-current power and output the direct-current power, the generator generating the alternating-current power with an output of a diesel engine; a first inverter configured to convert direct-current power discharged by a power storage device or the direct-current power output by the converter into alternating-current power and output the alternating-current power to a motor the drives a vehicle, the power storage device charging and discharging the direct-current power; a second inverter configured to convert the direct-current power discharged by the power storage device or the direct-current power output by the converter into alternating-current power and supply the alternating-current power to an auxiliary machine; and a control unit configured to control operations of the converter, the first inverter and the second inverter, characterized by first to fourth switchers (9, 10, 11, 12), the first switcher inserted among the generator, the converter and a fourth switcher, the second switcher inserted among the first inverter, the motor and the fourth switcher, the third switcher inserted among the second inverter, the auxiliary machine and the fourth switcher, the fourth switcher inserted among first switcher, the second switcher and the third switcher, each of the switchers (9, 10, 11, 12) having a function of selecting and connecting two devices among the three devices; and first to third contactors (13, 14, 15), the first contactor connected between a connecting unit of the power storage device and the converter, the second contactor connected between the connecting unit 3 and the first inverter, the third contactor connected between the connecting unit and the second inverter, each of the contactors (13, 14, 15) having a function of turning on and off connection components connected to the two connection ends, wherein the control unit is configured to generate a switching signal corresponding to a breakdown state and to output the switching signal to the first to fourth switchers (9, 10, 11, 12) and the first to third contactor (13, 14, 15), wherein the control unit performs, during a breakdown of the first inverter, control for switching a connection of the converter from the generator to the motor. a converter configured to convert alternating-current power generated by a generator into direct-current power and output the direct-current power, the generator generating the alternating-current power with an output of a diesel engine; a first inverter configured to convert direct-current power discharged by a power storage device or the direct-current power output by the converter into alternating-current power and output the alternating-current power to a motor the drives a vehicle, the power storage device charging and discharging the direct-current power; a second inverter configured to convert the direct-current power discharged by the power storage device or the direct-current power output by the converter into alternating-current power and supply the alternating-current power to an auxiliary machine; and a control unit configured to control operations of the converter, the first inverter and the second inverter, characterized by first to fourth switchers (9, 10, 11, 12), the first switcher inserted among the generator, the converter and a fourth switcher, the second switcher inserted among the first inverter, the motor and the fourth switcher, the third switcher inserted among the second inverter, the auxiliary machine and the fourth switcher, the fourth switcher inserted among first switcher, the second switcher and the third switcher, each of the switchers (9, 10, 11, 12) having a function of selecting and connecting two devices among the three devices; and first to third contactors (13, 14, 15), the first contactor connected between a connecting unit of the power storage device and the converter, the second contactor connected between the connecting unit 3 and the first inverter, the third contactor connected between the connecting unit and the second inverter, each of the contactors (13, 14, 15) having a function of turning on and off connection components connected to the two connection ends,