Distributed energy generation systems with energy storage and microgrids have attracted increasing research interest in recent years. Therefore, multi-ports dc-dc converters have gained more interest. However, when integrating into multiple port converters, the power flow control and ports regulation increase in complexity. In this paper, an isolated multi-port bidirectional converter based on an LLC converter is presented. The converter operates as a dc transformer at a fixed switching frequency and duty cycle without any control loop. The resonant tanks are designed to ensure soft-switching for the whole power range and minimize the voltage variation of the unregulated ports. In order to verify the converter operation, a 1 kW prototype with a 600 V maximum voltage has been implemented.
|Title of host publication||Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)|
|Publication status||Published - 2017|
|Event||2017 IEEE Energy Conversion Congress and Exposition - Cincinnati, United States|
Duration: 1 Oct 2017 → 5 Oct 2017
|Conference||2017 IEEE Energy Conversion Congress and Exposition|
|Period||01/10/2017 → 05/10/2017|