自均压混合型LLC直流变换器

• Format: Patent
• Language: Chinese
• Published: 12.08.2022
• 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

本发明涉及自均压混合型LLC直流变换器，包括：n个输入电容C1至Cn，从上到下依次串联；输入电容Ci的正负极各自引出正接线端子ui1和负接线端子ui2；n-1个谐振开关电容单元RSCU1至RSCUn-1，与输入电容相连；n-2个整流单元REC1至RECn-2，与谐振开关电容单元相连；n-2个整流单元REC1至RECn-2对应输出端口Uo1至Uo(n-2)；在整流单元和谐振开关电容单元之间，还设有n-2个串联谐振支路，包括：串联连接的谐振电感Lkr和谐振电容Ckr。本发明，采用结构模块化设计，易拓展，控制简单，无需额外的均压控制策略即可实现输入直流电容的电压自均衡；变压器的加入实现了输入侧与输出侧之间的电气隔离；LLC环节辅助实现软开关。 The invention relates to a self-voltage-sharing hybrid LLC direct-current converter, and the converter comprises n input capacitors C1 to Cn, which are sequentially connected in series from the top tothe bottom, wherein a positive wiring terminal ui1 and a negative wiring terminal ui2 are respectively led out from the positive electrode and the negative electrode of the input capacitor Ci; n-1 resonant switched capacitor units RSCU1 to RSCU which are connected with the input capacitors; n-2 rectification units REC1 to REC which are connected with the resonant switched capacitor units; wherein the n-2 rectification units REC1 to REC correspond to the output ports Uo1 to Uo (n-2); and n-2 serie