Vehicle control device and diesel hybrid vehicle system

A vehicle control device comprising:

• a converter configured to receive, from an alternating-current end side, input of alternating-current power generated by a generator, convert the alternating-current power into direct-current power, and output the direct-current power from a direct-current end side, the generator generating the alternating-current power with an output of a diesel engine;
• a first inverter configured to receive, from a direct-current end side, input of direct-current power discharged by a power storage device or the direct-current power output by the converter, convert the direct-current power into alternating-current power, and output the alternating-current power from an alternating-current end side to a motor that drives a vehicle, the power storage device charging and discharging the direct-current power;
• a second inverter configured to receive, from a direct-current end side, input of the direct-current power discharged by the power storage device or the direct-current power output by the converter, convert the direct-current power into alternating-current power, output the alternating-current power from an alternating-current end side, and supply the alternating-current power to an auxiliary machine;
• a first switcher including a function of connecting the generator and the alternating-current end side of the converter, a function of connecting a connection destination of the alternating-current end side of the converter to the motor or the auxiliary machine, and a function of connecting a connection destination of the generator to the motor or the auxiliary machine;
• a second switcher including a function of connecting the alternating-current end side of the first inverter and the motor, a function of connecting the alternating-current side of the second inverter and the auxiliary machine, a function of connecting a connection destination of the motor to the first switcher, a function of connecting a connection destination of the alternating-current end side of the second inverter to the first switcher, a function of connecting the connection destination of the second inverter connected to the auxiliary machine to the motor, a function of connecting a connection destination of the auxiliary machine to the first switcher, a function of connecting a connection destination of the alternating-current end side of the first inverter to the first switcher, and a function of connecting the connection destination of the alternating-current end side of the first inverter to the auxiliary machine;
• and
• a control unit configured to control operations of the converter, the first inverter, and the second inverter and the first and second switchers, wherein
• when the diesel engine is being started up, the control unit control, when the converter and the first inverter are broken down or when the converter and the second inverter are broken down, the first and second switchers, switches a connection destination of the generator connected to the alternating-current end side of the converter from the converter to the auxiliary machine via the first and second switchers, controls number of revolutions of the diesel engine, and controls the alternating-current power generated by the generator to desired alternating-current power to cause the auxiliary machine to operate.

A diesel hybrid vehicle system comprising:

• a diesel engine;
• a motor configured to drive a vehicle;
• a generator configured to generate alternating-current power with an output of the diesel engine;
• a power storage device configured to charge and discharge direct-current power;
• a converter configured to receive, from an alternating-current end side, input of alternating-current power generated by a generator, convert the alternating-current power into direct-current power, and output the direct-current power from a direct-current end side;
• a first inverter configured to receive, from a direct-current end side, input of direct-current power discharged by the power storage device or the direct-current power output by the converter, convert the direct-current power into alternating-current power, and output the alternating-current power from an alternating-current end side to a motor that drives a vehicle;
• a second inverter configured to receive, from a direct-current end side, input of the direct-current power discharged by the power storage device or the direct-current power output by the converter, convert the direct-current power into alternating-current power, output the alternating-current power from an alternating-current end side, and supply the alternating-current power to an auxiliary machine;
• a first switcher including a function of connecting the generator and the alternating-current end side of the converter, a function of connecting a connection destination of the alternating-current end side of the converter to the motor or the auxiliary machine, and a function of connecting a connection destination of the generator to the motor or the auxiliary machine;
• a second switcher including a function of connecting the alternating-current end side of the first inverter and the motor, a function of connecting the alternating-current side of the second inverter and the auxiliary machine, a function of connecting a connection destination of the motor to the first switcher, a function of connecting a connection destination of the alternating-current end side of the second inverter to the first switcher, a function of connecting the connection destination of the second inverter connected to the auxiliary machine to the motor, a function of connecting a connection destination of the auxiliary machine to the first switcher, a function of connecting a connection destination of the alternating-current end side of the first inverter to the first switcher, and a function of connecting the connection destination of the alternating-current end side of the first inverter to the auxiliary machine;
• and
• a control unit configured to control operations of the converter, the first inverter, and the second inverter and the first and second switchers, wherein
• when the diesel engine is being started up and when the converter and the first inverter are broken down or when the converter and the second inverter are broken down, the control unit performs control for controlling the first and second switchers, switching a connection destination of the generator connected to the alternating-current end side of the converter from the converter to the motor via the first and second switchers, controlling number of revolutions of the diesel engine, and controlling the alternating-current power generated by the generator to desired alternating-current power to drive the motor.