Research on control strategy of a multi-energy ship microgrid using diesel–battery rotation. (November 2022)

• Record Type: Journal Article
• Authors: Liao, Weiqiang; Xiao, Longhai; Zhang, Fuzhong; Chen, Meiqian; Lin, Shixian
• Is Part Of: Energy reports. Volume 8(2022)
• Page Start: 13948
• Page End: 13958
• Publication Date: 2022-11
• Subjects: Ship microgrid -- Diesel–battery rotation -- Technology for switching; Power resources -- Periodicals; Energy industries -- Periodicals; Power resources; Periodicals; Electronic journals; 621.04205
• DOI: 10.1016/j.egyr.2022.10.335
• Languages: English
• ISSNs: 2352-4847

Abstract

Abstract: As an object of this paper, a multi-energy ship microgrid system is considered, according to the ship operation conditions and energy saving and emission reduction requirements. A rotational control scheme for a diesel generator and an energy storage device is proposed, which can achieve both grid-tied and off-grid control. Firstly, taking into account the characteristics of small capacity microgrid and AC load, a topology of ship AC microgrid is adopted, based on the state of charge (SOC) and net load, construct a power coordinated control strategy by which diesel generators and energy storage systems can be alternately used as the main power supply for the microgrid; Secondly, for different power supply modes, a dual-mode switching technology based on V/F control and PQ control is proposed, and a significant improvement has been made in the performance of the voltage and current loop. Lastly, using the topology of the ship's AC microgrid, a model for simulation is built according to the proposed diesel–battery rotation strategy and dual-mode switching technology, and the four operating modes involved in ship operation are simulated and laboratory verified. According to the results, the control strategy designed is both feasible and effective.