The invention discloses a vehicle-mounted three-port converter control method which comprises the following steps: when a port B transmits power to a port C, an upper bridge arm switch tube and a lower bridge arm switch tube of a fourth bridge arm in a port B circuit are complementarily conducted at a 50% duty ratio, and an upper bridge arm switch tube and a lower bridge arm switch tube of a fifth bridge arm are complementarily conducted at a 50% duty ratio; the simultaneous conduction time of the upper bridge arm switch tube of the fourth bridge arm and the lower bridge arm switch tube of the fifth bridge arm and the simultaneous conduction time of the lower arm switch tube of the fourth bridge arm and the upper arm switch tube of the fifth bridge arm are both zero duration; the upper bridge arm switch tube and the lower bridge arm switch tube of the third bridge arm are not conducted; and the bus capacitor of the A port circuit reversely discharges to the B port by adjusting the on-off of the switch tube of the bridge arm of the A port circuit, so that the voltage of the A port is reduced. The control method can prevent the energy from excessively flowing to the port A to cause the overvoltage of the port A to cause the damage to the bus capacitor. According to the control method, overlarge reactive circulating current cannot be generated, and the influence on the power conversion efficiency is small.

    本发明公开了一种车载三端口变换器控制方法,B端口向C端口传递功率时:B端口电路中的第四桥臂的上桥、下桥臂开关管以50%占空比互补导通,第五桥臂的上、下桥臂开关管以50%占空比互补导通,且第四桥臂的上桥臂开关管同第五桥臂的下桥臂开关管的同时导通时间以及第四桥臂的下臂开关管同第五桥臂的上臂开关管的同时导通时间同为第零时长;第三桥臂的上、下桥臂开关管均不导通;并通过调整A端口电路的桥臂的开关管通断,使A端口电路的母线电容反向往B端口放电,以实现A端口电压降低。该控制方法,能避免能量过度流向A端口,引起A端口过压而造成母线电容损坏。该控制方法不会产生过大的无功环流,对功率变换效率产生的影响较小。


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    Titel :

    Vehicle-mounted three-port converter control method


    Weitere Titelangaben:

    车载三端口变换器控制方法


    Beteiligte:
    CHEN JUNJIE (Autor:in) / LIANG DONG (Autor:in) / MENG FANPENG (Autor:in) / WEI TING (Autor:in) / KONG XIANGFEI (Autor:in)

    Erscheinungsdatum :

    2023-06-23


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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



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