Non-isolated soft switching interleaved parallel bidirectional DC-DC converter and modulation method thereof

• Main Authors: LIU QIANYI, LI YONG, LIU FANG, WAN JIANGHU
• Format: Patent
• Language: Chinese; English
• Published: 19.09.2023
• 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 non-isolated soft switching interleaving bidirectional DC-DC converter and a modulation method thereof.The non-isolated soft switching interleaving bidirectional DC-DC converter comprises a DC voltage source VH, a DC voltage source VL, a main circuit, an auxiliary circuit and a resonant voltage peak elimination circuit, the main circuit is composed of two paths of interleaving bidirectional DC-DC circuits, the two ends of the main circuit are connected with the DC voltage source VH and the DC voltage source VL respectively, and the DC voltage source VH and the DC voltage source VL are connected with the auxiliary circuit. Parallel connection on the topological structure is formed; the auxiliary circuit is connected with the main circuit, is shared by the two paths of staggered parallel bidirectional DC-DC circuits, and is used for realizing soft switching operation of a switching tube in the main circuit and a switching tube in the auxiliary circuit; the resonance voltage peak elimina