A bidirectional power converter (102), a control unit (104), a charging device (200) and a method (600) for transferring power between an EV (106) and a power grid are provided. The bidirectional power converter (102) includes an isolated DC-DC converter (102C) having: a first stage (201) that converts a DC voltage (V1) into a high frequency AC voltage (V1ac); a second stage (202) having four power transfer switches (S5-S8) and capacitors (C1, C2) capable of converting a high frequency AC voltage (V2ac) having an amplitude V2 into a DC voltage (Vdc) having an amplitude V2 or 2V2 in a power conversion mode and converting the DC voltage (Vdc) into a multi-level high frequency AC voltage (V2ac) in a power inversion mode; and an intermediate stage (203) electrically coupled to the first and second stages (201, 202), having a high frequency transformer with a turn ratio V1: V2.

    提供了用于在EV(106)和电网之间传输功率的双向功率转换器(102)、控制单元(104)、充电设备(200)和方法(600)。双向功率转换器(102)包括隔离式DC‑DC转换器(102C),隔离式DC‑DC转换器(102C)具有:将DC电压(V1)转换成高频AC电压(V1ac)的第一级(201);具有四个功率转换开关(S5‑S8)以及电容器(C1,C2)的第二级(202),其能够在功率转换模式中将具有幅度V2的高频AC电压(V2ac)转换成具有幅度V2或2V2的DC电压(Vdc),并且在功率逆变模式中将DC电压(Vdc)转换成多电平高频AC电压(V2ac);以及电耦合到第一级和第二级(201,202)的中间级(203),其具有匝数比V1:V2的高频变压器。


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    Titel :

    Bidirectional power converter


    Weitere Titelangaben:

    双向功率转换器


    Beteiligte:
    KADAM AJIT (Autor:in)

    Erscheinungsdatum :

    2024-05-10


    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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