Control device, control method, and electric motor car

An electric motor car comprising:

• a switch which is installed between an external power supply source and a power line drawn through the electric motor car;
• a battery which supplies power to a main motor;
• a step-up unit which is installed between the power line and the battery, and which is configured to perform a step-up operation;
• a control unit which, when using regenerative braking to brake the electric motor car and when a speed of the electric motor car is faster than a reference speed, interrupts a connection between the power supply source and the power line using the switch, and increases the power supplied from the battery using the step-up unit so as to expand an effective range of the regenerative braking;
• and
• a carriage on which at least one of the battery and the control unit is provided.

A control device for an electric motor car comprising:

• a switch which is installed between a power supply source and a power line drawn through the electric motor car;
• a battery which supplies power to a main motor of the electric motor car;
• a step-up unit which is installed between the power line and the battery, and which is configured to increase a voltage supplied from the battery;
• and
• a control unit which breaks a connection between the power supply source and the power line using the switch when braking the electric motor car, increases the power supplied from the battery using the step-up unit, and performs regenerative braking in the main motor to which the increased power is supplied,
• wherein the control unit controls a voltage of the power line at a battery voltage of the battery in a power running mode, and after a regeneration operation is started by braking the electric motor car, the control unit breaks the connection between the power supply source and the power line using the switch and performs a step-up operation using the step-up unit.

A control device for an electric motor car comprising:

• a switch which is installed between a power supply source and a power line drawn through the electric motor car;
• a battery which supplies power to a main motor of the electric motor car;
• a step-up unit which is installed between the power line and the battery, and which is configured to increase a voltage supplied from the battery;
• and
• a control unit which breaks a connection between the power supply source and the power line using the switch when braking the electric motor car, increases the power supplied from the battery using the step-up unit, and performs regenerative braking in the main motor to which the increased power is supplied,
• wherein the control unit increases a voltage of the power line by using the step-up unit in a power running mode of the electric motor car using the battery.

An electric motor car comprising:

• a switch which is installed between an external power supply source and a power line drawn through the electric motor car;
• a battery which supplies power to a main motor;
• a step-up unit which is installed between the power line and the battery, and which is configured to perform a step-up operation;
• a control unit which interrupts a connection between the power supply source and the power line using the switch when braking the electric motor car, increases the power supplied from the battery using the step-up unit, and performs regenerative braking in the main motor to which the increased power is supplied;
• and
• a carriage on which at least one of the battery and the control unit is provided,
• wherein the control unit controls a voltage of the power line at a battery voltage of the battery in a power running mode, and after a regeneration operation is started by braking the electric motor car, the control unit interrupts the connection between the power supply source and the power line using the switch and performs the step-up operation using the step-up unit.