PROBLEM TO BE SOLVED: To enhance acceleration performance and regeneration brake force in the high speed region of a rolling stock, even with a small storage capacity of a power storage device.SOLUTION: A power converter for rolling stock includes an inverter device for obtaining a DC power from at least one of a DC power supply and a power storage device, and converting it into a three-phase AC power for driving an AC motor, and when the rotational speed of the AC motor is lower than a reference frequency, obtaining a DC power from the DC power supply and converting it into a three-phase AC power, otherwise obtaining a DC power from the DC power supply and power storage device, and converting it into a three-phase AC power for driving the AC motor.SELECTED DRAWING: Figure 1
【課題】蓄電装置の少ない蓄電容量によっても鉄道車両の高速度域における加速性能と回生ブレーキ力を向上させる。【解決手段】鉄道車両用の電力変換装置は、直流電源と蓄電装置の少なくとも一方から直流電力を得てそれを三相交流電力に変換して交流電動機を駆動するインバータ装置を備え、交流電動機の回転速度が基準周波数より低い場合には、直流電源から直流電力を得て三相交流電力に変換し、交流電動機の回転速度が前記基準周波数より高い場合には、直流電源と蓄電装置から直流電力を得て三相交流電力に変換して、交流電動機を駆動する。【選択図】図1
POWER CONVERTER FOR ROLLING STOCK
鉄道車両用の電力変換装置
2017-03-02
Patent
Electronic Resource
Japanese
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 |
Power converter, electric rolling stock and method for controlling sequence test
European Patent Office | 2017
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