The invention discloses a rail traffic tool and an external power supply system and a control method thereof. The external power supply system comprises a multi-voltage-class external power supply, a power supply gating device, a traction transformer, a power supply mode change-over switch and a traction converter device. When the power supply gating equipment is disconnected from the multi-voltage-level external power supply, the power supply mode switching switch is disconnected and is switched into an external power supply mode; the power gating device selects a path corresponding to the voltage level output by the multi-voltage-level external power supply; the secondary winding of the traction transformer boosts the intermediate voltage of the traction converter equipment to a stable value, so that the traction converter equipment obtains the required voltage of the traction motor and the required voltage of the auxiliary load; the situation that the output voltage can meet the power supply requirement of an auxiliary system only by additionally designing a complex multi-current converter in the links of rectification/inversion and the like is avoided, and the size and cost of the whole power supply system can be reduced under the conditions that the input voltage of the external power supply is high and the voltage fluctuation range is large.

    本发明公开了一种轨道交通工具及其用外接电源系统和控制方法,包括多电压等级外接电源、电源选通设备、牵引变压器、供电模式切换开关和牵引变流器设备;当电源选通设备与多电压等级外接电源连接时断开,供电模式切换开断开切换为外接电源供电模式;电源选通设备选择与多电压等级外接电源输出的电压等级相对应的通路;牵引变压器的次级绕组将牵引变流器设备的中间电压抬升至稳定值,以便牵引变流器设备得到牵引电机的需求电压和辅助负载的需求电压,避免了额外设计复杂的整流/逆变等环节多流制变流器才能使得输出电压满足辅助系统供电要求,且在外接电源输入电压高、电压波动范围大的情况下,能减小整个供电系统的体积与成本。


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    Title :

    Rail traffic tool and external power supply system and control method thereof


    Additional title:

    轨道交通工具及其用外接电源系统和控制方法


    Contributors:
    ZHANG BIN (author) / JIANG FENGBING (author) / XIONG YUYU (author) / XU JIANGHUI (author) / LI MIN (author) / FANG PENG (author) / LIU DA (author) / LI YUANJING (author)

    Publication date :

    2023-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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