The invention relates to a single-stage three-phase high-frequency link combined bidirectional AC/DC converter which is formed by sequentially cascading a three-phase alternating current filter, a three-phase cycle converter, n primary side series high-frequency transformers, n output parallel high-frequency bidirectional full-bridge rectifiers and a direct current filter. The secondary side of each transformer is connected with a high-frequency bidirectional full-bridge rectifier; and the output ends of the n full-bridge rectifiers are connected in parallel. According to the single-stage three-phase high-frequency link combined bidirectional AC/DC converter, a double-current-loop direct active power partition SVPWM control strategy is adopted, direct-current-side current and alternating-current-side unit power factor control is achieved, the converter can work in a rectification and inversion mode, and a bidirectional power flow is achieved. The converter belongs to single-stage power conversion, does not have a direct-current link, solves the problems of a short service life and the like of a direct-current bus electrolytic capacitor, and improves the reliability of the converter; and the n transformer-full-bridge rectifiers with the primary sides connected in series and the secondary sides connected in parallel are combined, the capacity of the converter is improved, and the converter is suitable for high-power occasions.

    单级三相高频环节组合双向AC/DC变换器,是由三相交流滤波器、三相周波变换器、n个原边串联高频变压器、n个输出并联高频双向全桥整流器、直流滤波器依序级联构成,其中,每个变压器副边分别与一个高频双向全桥整流器连接,n个全桥整流器输出端并联;单级三相高频环节组合双向AC/DC变换器采用双电流环直接有功功率分区SVPWM控制策略,实现了直流侧电流和交流侧单位功率因数控制,变换器可工作在整流和逆变模式,实现双向功率流。该变换器属于单级功率变换,没有直流环节,解决了直流母线电解电容器寿命短等问题,提高了变换器的可靠性;原边串联副边并联的n个变压器‑全桥整流器组合,提高了变换器的容量,适用于大功率场合。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Single-stage three-phase high-frequency link combined bidirectional AC/DC converter


    Weitere Titelangaben:

    一种单级三相高频环节组合双向AC/DC变换器


    Beteiligte:
    JIANG JIAHUI (Autor:in) / ZHANG TAO (Autor:in) / MA DAZHUANG (Autor:in) / CHEN DAOLIAN (Autor:in)

    Erscheinungsdatum :

    2021-04-20


    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



    Single-stage three-phase bidirectional converter and vehicle-mounted charging equipment

    CHEN LIHONG / HAO SHIQIANG / XU CHENTING | Europäisches Patentamt | 2024

    Freier Zugriff

    High Efficiency High-frequency-link Single-stage AC-DC Converter

    Nayak, Parthasarathy / Rajashekara, Kaushik | IEEE | 2021


    Single-stage single-phase bidirectional converter and vehicle-mounted charging equipment

    CHEN LIHONG / HAO SHIQIANG / XU CHENTING | Europäisches Patentamt | 2024

    Freier Zugriff

    Bidirectional Three-Phase LLC Resonant Converter

    Rahman, Arief Noor / Lee, Cheng-Yan / Chiu, Huang-Jen et al. | IEEE | 2018