The invention discloses a topological structure of a three-port converter and a control method of the topological structure. The topological structure comprises a fuel cell port, a lithium battery port, a load port, a switching tube, a diode, an inductor and a capacitor, the first inductor, the first switch tube and the first diode form a booster circuit, so that the fuel cell provides average power for a load port; the second inductor, the third switch tube and the fourth switch tube form a bidirectional DC-DC converter, so that the lithium battery can provide high-frequency pulsating power for an output port or absorb feedback energy of a load port; and the first inductor, the first switch tube, the second switch tube and the second diode form a booster circuit, so that the fuel cell charges the lithium battery. According to the invention, an energy management strategy of optimal design is formulated according to the working mode of the three-port converter and the dynamic characteristics of the fuel cell and the lithium battery, communication between power supplies is not needed, and the proposed topology and control method can improve the power density, the dynamic response capability and the reliability of the system.

    本发明公开了一种三端口变换器的拓扑结构及其控制方法,其包括燃料电池端口、锂电池端口、负载端口、开关管、二极管、电感和电容;由第一电感、第一开关管、第一二极管构成升压电路,实现燃料电池给负载端口提供平均功率;由第二电感、第三开关管、第四开关管构成双向DC‑DC变换器,实现锂电池可以给输出端口提供高频脉动功率或吸收负载端口的回馈能量;由第一电感、第一开关管、第二开关管、第二二极管构成升压电路,实现燃料电池给锂电池充电。本发明根据三端口变换器的工作模式和燃料电池、锂电池的动态特性制定出了优化设计的能量管理策略,且无需电源间通信,并且所提出的拓扑和控制方法能提升系统的功率密度、动态响应能力和可靠性。


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    Titel :

    Topological structure of three-port converter and control method thereof


    Weitere Titelangaben:

    一种三端口变换器的拓扑结构及其控制方法


    Beteiligte:
    CHEN JIAWEI (Autor:in) / CHEN ZHIYUE (Autor:in) / LIU XIAOYING (Autor:in)

    Erscheinungsdatum :

    08.04.2025


    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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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