An auxiliary power supply device includes: a resonance-type inverter circuit to convert DC power input from a DC power supply to AC power, a primary coil for input of AC power from the inverter circuit, a transformer for output of AC power from a secondary coil insulated from the primary coil, a converter circuit for conversion of AC power from the transformer to DC power, a filter condenser for smoothing of DC voltage from the converter circuit, and an inverter controller for output of a gate signal for causing operation of switching elements of the inverter circuit. The inverter controller, in a charging mode for charging the filter condenser, makes pulse width of the gate signal smaller than when in a running mode for running of electric rolling stock, and gradually increases the pulse width in accordance with an elapsed time under control in the charging mode.
AUXILIARY POWER SUPPLY DEVICE FOR ELECTRIC ROLLING STOCK
2017-10-19
Patent
Elektronische Ressource
Englisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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