A voltage estimating device for a power supply line according to one aspect of the present disclosure includes a voltage detector, a current detector, a voltage calculator. The voltage calculator calculates a magnitude of alternating primary voltage that a primary winding in a transformer receives from a power supply line based on a magnitude of tertiary voltage in the transformer detected by the voltage detector, a magnitude of output current in the transformer detected by the current detector, and correlation information. The correlation information indicates a correlation between a voltage ratio and the magnitude of the output current, and the voltage ratio represents a ratio of the magnitude -of the primary voltage to the magnitude of the tertiary voltage.
Railroad Vehicle, Voltage Estimating Device for Power Supply Line, and Method for Estimating Voltage of Power Supply LIne
09.08.2018
Patent
Elektronische Ressource
Englisch
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