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.
DCDC DCDC Conversion Circuit With Pre-Charge
예비충전이 가능한 DCDC 변환 회로
2021-09-27
Patent
Electronic Resource
Korean
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 |
DCDC HYBRID VEHICLE HAVING DCDC CONVERTER AND METHOD OF CONTROLLING THE SAME
European Patent Office | 2017
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