1results about How to "Reduce output harmonic content" patented technology

A three-level double-buck conversion circuit for a post-stage of an energy storage inverter integrated device, comprising an energy storage battery, a bidirectional DC-DC converter, switching tubes S1, S2, S3, S4, S5, S6, S7, diodes D1, D2, D3, D4, D5, D6, D7, inductors L1 and L2, and capacitors C1 and C2. The three-level double-buck conversion circuit comprises a bidirectional switching tube composed of switching tube S4, diodes D3, D4, D5, and D6, and a double-buck circuit structure composed of switching tubes S2 and S3, diodes D1 and D2, and inductors L1 and L2. The three-level double-buck conversion circuit of the present application organically integrates three-level technology and a double-buck circuit structure, and has the advantages of low switching tube voltage stress, high reliability, and high efficiency.