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JACIII Vol.23 No.2 pp. 287-292
doi: 10.20965/jaciii.2019.p0287
(2019)

Paper:

Adaptive Energy Control Strategy for a Hybrid Energy Storage System in a DC Micro-Grid of an Unmanned Surface Vehicle

Zhongjiu Zheng*, Yujia Xu**, Ning Wang*,†, and Hong Zhao*

*Center for Intelligent Marine Vehicles, School of Marine Electrical Engineering, Dalian Maritime University
No.1 Linghai Road, Ganjingzi District, Dalian City, Liaoning Province 116024, China

**School of Mechanical Electronic and Information Engineering, China University of Mining and Technology (Beijing)
No.11 Xueyuan Road, Haidian District, Beijing 100083, China

Corresponding author

Received:
June 27, 2018
Accepted:
July 31, 2018
Published:
March 20, 2019
Keywords:
DC micro-grid, hybrid energy storage, USV, new energy
Abstract

At present, the DC micro-grid power supply system based on new energy generation has become the primary developmental direction for improving the endurance of an unmanned surface vehicle (USV). In this study, an adaptive energy control strategy based on the moving average filtering algorithm is proposed to solve the severe impact of the pulsing load mutation on the hybrid energy storage system (HESS) in the DC micro-grid. The moving average filtering algorithm is used to filter the pulsating load power, and a battery slows the power change. Meanwhile, the super capacitor compensates for the instantaneous power mutation, optimizing the charge and discharge process of the battery. In addition, gain-varying adaptive control for the terminal voltage of the supercapacitor is adopted to stabilize it near the reference value, which solves the problem of voltage off-limit caused by the unequal output and absorption energy of the supercapacitor. The simulation results show that the proposed control strategy can effectively and quickly suppress the power fluctuation caused by the load mutation of the photovoltaic DC micro-grid system, improve the quality of the system output power, and enhance the reliability and stability of the system.

Cite this article as:
Z. Zheng, Y. Xu, N. Wang, and H. Zhao, “Adaptive Energy Control Strategy for a Hybrid Energy Storage System in a DC Micro-Grid of an Unmanned Surface Vehicle,” J. Adv. Comput. Intell. Intell. Inform., Vol.23, No.2, pp. 287-292, 2019.
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Last updated on Nov. 08, 2019