Dual active bridge converter for Energy Storage System in DC microgrid

摘要

In order to increase the reliability and response speed of an Energy Storage System(ESS), the power management algorithm for ESS is proposed using a dual active bridge(DAB) converter. The DAB converter has been popular, because it operates with high performance, high efficiency, galvanic isolation, and an inherent soft-switching feature. The bi-directional power transmission is a characteristic of the dual active bridge converter, permitting flexible interfacing to energy storage devices. This paper suggests a control strategy for the power management among independent components in ESS system. Its test-bed contains the power management algorithm which consists of a bidirectional DC/DC converter, a renewable energy simulator, DC loads, and a DC-bus protector. The proposed power management algorithm is analyzed, which is verified from the proposed ESS test-bed.