Patent ID: 11938986
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 2:
3. The control device according to claim 2, wherein
the step-down circuit includes a switching element and a resistor connected in serial to each other,
the switching element opens or closes an electrical path from the power converter to the resistor,
when the voltage at the primary side is equal to or higher than the initial voltage, the circuit controller controls the switching element of the step-down circuit at a conduction ratio positively correlated with the voltage at the primary side, and
when the separation determiner determines that the current collector is separate from the power line, the circuit controller controls the switching element of the step-down circuit at the conduction ratio positively correlated with the voltage at the primary side, even when the voltage at the primary side is lower than the initial voltage.