The present invention discloses a DCDC conversion circuit capable of pre-charging, comprising: a high-voltage-side conversion module for connecting the primary winding of a main transformer T1; a low-voltage-side conversion module for connecting the secondary winding of the main transformer; and a controller for controlling the high- and low-voltage-side conversion modules. A pre-charging module is connected in series to the direct current bus of the low-voltage-side conversion module, and the pre-charging module pre-charges the capacitor of a power-consuming facility connected to the direct current bus of the high-voltage-side conversion module when charging a device. The present invention provides the DCDC conversion circuit capable of solving the problem of an existing technique and capable of pre-charging. The present invention is the improvement based on a DCDC converter. Most of pre-charging modules and forward DCDC share output elements and output circuits and only a small number of elements increase to reduce volume and costs and to simplify a control method compared with an independent pre-charging branch circuit.

    본 발명은 예비충전이 가능한 DCDC 변환 회로를 공개하는 데, 메인 변압기 T1 1차 권선(primary winding)을 연결하는 고압측 전환모듈, 메인 변압기2차 권선(secondary winding)을 연결하는 저압측 전환모듈 및 고-저압측 전환모듈을 제어하는 제어기를 포함하며, 저압측 전환모듈 직류모선 중에 예비충전모듈을 직렬연결하고, 상기 예비충전모듈은 기기에 충전할 때 고압측 전환모듈 직류모선에 연결된 전력사용설비 커패시터에 예비충전한다. 본 발명은 종래기술의 단점을 해결하고 예비충전이 가능한 DCDC 변환 회로를 제공하며, 본 발명은 원래 DCDC변환기에 근거하여 진행하는 개선으로서, 예비충전모듈과 정방향 DCDC가 대부분 출력소자와 출력회로를 공유하고 소량의 소자만 증가하여 독립된 예비충전 분기회로에 비해서 부피와 원가가 줄고 제어방식이 간단하다.


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    Title :

    DCDC DCDC Conversion Circuit With Pre-Charge


    Additional title:

    예비충전이 가능한 DCDC 변환 회로


    Contributors:
    LIU JUN (author) / FENG YINGYING (author) / YAO SHUN (author) / ZHANG CHANGSHENG (author)

    Publication date :

    2021-09-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    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



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