Energy Management of a Hybrid AC–DC Micro-Grid Based on a Battery Testing System

Autor: Bo Long, Taek Won Jeong, Jong Deuk Lee, Yoo Cheol Jung, Kil To Chong
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Energies, Vol 8, Iss 2, Pp 1181-1194 (2015)
Druh dokumentu: article
ISSN: 1996-1073
DOI: 10.3390/en8021181
Popis: Energy Recovery Battery Testing Systems (ERBTS) plays an important role in battery manufacture. The conventional ERBTS configuration contains a fundamental transformer, and a bidirectional Direct Current (DC)–DC and Alternating Current (AC)–DC converter. All ERBTS are connected in parallel, thus constituting a special and complicated AC micro-grid system. Aiming at addressing their low energy recovery efficiency, complex grid-connected control algorithm issues for islanded detection, and complicated power circuit topology issues, a hierarchical DC-link voltage hybrid AC–DC micro-grid that contains composite energy storing devices is proposed. Moreover, an energy management optimal scheme for the proposed scheme is put forward. The system configuration of the proposed scheme is described in detail. Compared to the conventional scheme, the proposed scheme has the merits of simplified power circuit topology, no need for phase synchronous control, and much higher energy recovery efficiency and reliability. The validity and effectiveness of the proposed technique is verified through numerous experimental results.
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