**Binxin Zhu 1,2,\*, Hui Hu 1,2, Hui Wang 1,2 and Yang Li <sup>3</sup>**


Received: 23 April 2020; Accepted: 26 May 2020; Published: 1 June 2020

**Abstract:** A multi-input-port bidirectional DC/DC converter is proposed in this paper for the energy storage systems in DC microgrid. The converter can connect various energy storage batteries to the DC bus at the same time. The proposed converter also has the advantages of low switch voltage stress and high voltage conversion gain. The working principle and performance characteristics of the converter were analyzed in detail, and a 200 W, two-input-port experimental prototype was built. The experimental results are consistent with the theoretical analysis.

**Keywords:** DC/DC converter; multi-input-port; bidirectional; energy storage
