Research on characteristics of bidirectional CLLC DC–DC transformer used in DC microgrid

• DOI: 10.1049/joe.2019.0909
• Publication Date: 2019-08-08T18:10:15Z
• Authors: Wen Chunxue; Hu Mingming; Hu Changbin; Piao Zhengguo; Zhou Jinghua
• Keywords: Microgrid

In the DC microgrid system, energy storage system must have both high power density and density, it is difficult for a single type of device to meet this requirement. The battery super capacitor are highly complementary in performance. Here, are, respectively, connected bus through bidirectional DC–DC converter form hybrid system. For 380V new symmetrical circuit topology structure with two inductors capacitors (CLLC) resonant network proposed. Since CLLC has zero voltage switching capability main switch soft commutation output rectifier, can operate at conversion efficiency. Finally, effectiveness control strategy verified simulation experiments.