DC transformer for access of new energy to DC power grid, and implementation method for DC transformer

The invention relates to a DC transformer for the access of new energy to a DC power grid, and an implementation method for the DC transformer. The DC transformer employs an isolation-type DC/DC converter mode, and is characterized in that the DC transformer comprises a low-voltage side full-bridge...

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Bibliographische Detailangaben
Hauptverfasser:	WU FUBAO, FENG XINZHEN, LI GUANJUN, LU JUNFENG, TAO YIBIN, SUN WEI, HU JINHANG, YU HAOJIE, LIU HUAN, CHI YONGNING, YAN SHENGCHI, CAO YUANZHI, YAO LIANGZHONG, DING JIE, HOU SHUYI, ZHUANG JUN, WANG ZHIBING, YANG BO, ZHOU CHEN, ZHU HONGBAO, LI YAN, XU XIAOHUI, CUI HONGFEN, LI YUELONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention relates to a DC transformer for the access of new energy to a DC power grid, and an implementation method for the DC transformer. The DC transformer employs an isolation-type DC/DC converter mode, and is characterized in that the DC transformer comprises a low-voltage side full-bridge converter and a high-voltage side modular multi-level converter; the low-voltage side single-phase full-bridge converter and the high-voltage side single-phase modular multi-level converter are connected through a high-frequency transformer. The DC transformer provided by the invention can achieve the interconnection of a new energy DC power generation station with the low voltage level and a DC power grid with the high voltage level. The low-voltage side single-phase full-bridge converter is used for connecting the new energy DC power generation station with the low voltage level. The high-voltage side single-phase modular multi-level converter is used for connecting the DC power grid with the high voltage level.