Reduced-Order Observer-Based Control System for Dual-Active-Bridge DC/DC Converter

Duy Dinh Nguyen, Goro Fujita, Quang Bui-Dang, Minh Cao Ta

研究成果: Article査読

24 被引用数 (Scopus)


An observer-based control (OBC) strategy for dual-Active-bridge converters is proposed in this paper. The target is not only to handle the active power transferring between two terminals, but also to regulate the phase difference between the primary voltage and current around specific minimum value. The value is chosen to reduce the conduction loss in the system. A reduced-order observer is developed to estimate the direct and quadrature components of the transmission current for use in a decoupled current control system. Since the dc terminal current is the only input of the observer, a low sampling frequency is enough to ensure an acceptable precision. Experiment results show that the proposed OBC strategy can help improve the dynamic performance compared with that when using a single loop voltage mode system. Furthermore, at the high power range, the efficiency obtained when employing the OBC method is improved by up to 7.2%.

ジャーナルIEEE Transactions on Industry Applications
出版ステータスPublished - 2018 7月 1

ASJC Scopus subject areas

  • 制御およびシステム工学
  • 産業および生産工学
  • 電子工学および電気工学


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