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

Claim 19:
20. A method of determining separation executed by a control device for a railway vehicle, the method comprising:
comparing, by a control device, (i) a voltage at a primary side of a power converter or a current flowing from a current collector to the power converter and (ii) a threshold having an absolute value positively correlated with an output power from the power converter and varying with time in response to a time variation in the output power, the primary side of the power converter being supplied with electric power from the current collector, the current collector obtaining the electric power from a power source via a power line;
determining, by the control device, whether the current collector is separate from the power line; and
controlling, by the control device, switching elements of the power converter to control the output power from the power converter based on whether the current collector is determined to be separate from the power line.