The invention discloses a bidirectional hybrid rectifier based on LCLC resonance, and the first stage of the bidirectional hybrid rectifier employs totem-pole type interleaved bridgeless power factorcorrection (PFC), can process high power, and obtains high-quality power grid current. Qe and Qf are connected in parallel with Qg and Qh for use, so that the conduction loss is reduced, and the charger efficiency is improved. The LCLC resonant bidirectional DC/DC converter is symmetrical in circuit structure, consistent in forward and reverse working performance, high in efficiency and high in power density, does not utilize a transformer excitation inductor to participate in resonance, can still realize relatively large gain under the condition of a large inductance ratio, and serves as a second stage of the novel bidirectional hybrid rectifier. The first-stage AC/DC circuit serves as an interface circuit of a power grid side and a second stage and is responsible for controlling alternating current side current and direct current bus voltage, so that better grid side current quality is obtained, and stable direct current is provided for the second-stage circuit; and the second-stagebidirectional DC/DC circuit is responsible for controlling the voltage and current of the output side, and can carry out reasonable and ordered charging and discharging according to a scheduling signal.

    本发明公开了一种基于LCLC谐振的双向混合整流器,该双向混合整流器第一级采用图腾柱式交错无桥功率因数校正(PFC),可以处理大功率,获得高质量的电网电流。Qe、Qf与Qg、Qh并联使用,降低了传导损耗,提高了充电器效率。LCLC谐振式双向DC/DC变换器电路结构对称,正反向的工作性能一致,具有高效率和高功率密度,且没有利用变压器励磁电感参与谐振,在大的电感比情况下,仍可以实现较大的增益,作为该新型双向混合整流器的第二级。其中第一级AC/DC电路作为电网侧和第二级的接口电路,负责控制交流侧电流和直流母线电压,从而获得较好的网侧电流质量和为第二级电路提供稳定的直流;第二级双向DC/DC电路负责控制输出侧电压和电流,可以根据调度信号进行合理有序的充放电。


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    Title :

    Bidirectional hybrid rectifier based on LCLC resonance


    Additional title:

    一种基于LCLC谐振的双向混合整流器


    Contributors:
    YAN JINGBIN (author) / MA JINGJING (author)

    Publication date :

    2021-03-19


    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



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