A journal of IEEE and CAA , publishes high-quality papers in English on original theoretical/experimental research and development in all areas of automation
Volume 6 Issue 2
Mar.  2019

IEEE/CAA Journal of Automatica Sinica

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Jiangkai Peng, Bo Fan, Jiajun Duan, Qinmin Yang and Wenxin Liu, "Adaptive Decentralized Output-Constrained Control of Single-Bus DC Microgrids," IEEE/CAA J. Autom. Sinica, vol. 6, no. 2, pp. 424-432, Mar. 2019. doi: 10.1109/JAS.2019.1911387
Citation: Jiangkai Peng, Bo Fan, Jiajun Duan, Qinmin Yang and Wenxin Liu, "Adaptive Decentralized Output-Constrained Control of Single-Bus DC Microgrids," IEEE/CAA J. Autom. Sinica, vol. 6, no. 2, pp. 424-432, Mar. 2019. doi: 10.1109/JAS.2019.1911387

Adaptive Decentralized Output-Constrained Control of Single-Bus DC Microgrids

doi: 10.1109/JAS.2019.1911387
Funds:

the U.S. Office of Naval Research N00014-16-1-3121

the U.S. Office of Naval Research N00014-18-1-2185

the National Natural Science Foundation of China 61673347

the National Natural Science Foundation of China U1609214

the National Natural Science Foundation of China 61751205

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  • A single-bus DC microgrid can represent a wide range of applications. Control objectives of such systems include high-performance bus voltage regulation and proper load sharing among multiple distributed generators (DGs) under various operating conditions. This paper presents a novel decentralized control algorithm that can guarantee both the transient voltage control performance and realize the predefined load sharing percentages. First, the output-constrained control problem is transformed into an equivalent unconstrained one. Second, a two-step backstepping control algorithm is designed based on the transformed model for bus-voltage regulation. Since the overall control effort can be split proportionally and calculated with locally-measurable signals, decentralized load sharing can be realized. The control design requires neither accurate parameters of the output filters nor load measurement. The stability of the transformed systems under the proposed control algorithm can indirectly guarantee the transient bus voltage performance of the original system. Additionally, the high-performance control design is robust, flexible, and reliable. Switch-level simulations under both normal and fault operating conditions demonstrate the effectiveness of the proposed algorithm.

     

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