DC-DC series-parallel topological structure

• Main Authors: CUI SAIHUA, WANG XU, YAO JIANHUA, WANG ZIJIAN
• Format: Patent
• Language: Chinese; English
• Published: 25.03.2022
• Subjects: 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

The invention provides a DC-DC series-parallel topological structure, and relates to the technical field of power electronics, the series-parallel topological structure comprises a plurality of rectification circuits, and each rectification circuit comprises a transformer secondary side and a full-bridge rectification unit which are connected with each other; and a plurality of resonant circuits, each resonant circuit corresponds to one rectification circuit, and different polarity states in each rectification circuit are changed by controlling the wave sending mode of each resonant circuit so as to realize DC-DC conversion. On the premise that no extra switching circuit is added, wide-range constant-power DC-DC is realized, a large number of switching devices and sampling circuits are saved, the additional failure risk caused by adding a large number of switching function units is avoided, the control logic is simplified, and the cost space is optimized. 本发明提出了一种DC-DC串并联拓扑结构，涉及电力电子技术领域，所述串并联拓扑结构包括：多个整流电路，其中，