New Energy Ship Grid-Connected Inverter Grid Support and Cooperative Control
Yang Rongfeng1, Yu Yannan2, Yu Wanneng1, Wang Guolin1, Wu Defeng1
1. School of Marine Engineering Jimei University Xiamen 361021 China 2. School of Electrical and Control Engineering Heilongjiang University of Science and Technology Harbin 150027 China
Abstract：New energy ships have developed rapidly in recent years, and grid-connected inverters are their key equipment. Such inverter can work individually or cooperatively with diesel generator to support the ship power station voltage and frequency. This paper proposed the inverter control strategy under isolated state, grid-tied state and the transient switching state, to solve the problem that ship grid voltage and frequency are easily affected by load variation. Firstly, the grid voltage and inverter current double closed loop control is employed under isolated state, and the full load current is feedforwarded. Secondly, the power control is employed under grid-tied state, and the dynamic component of load current extracted by delicately designed filter is feedforwarded. Thirdly, the state locking method is utilized under switching process between these two states to avoid the instability caused by parameters emergent changes. The proposed control strategy takes full advantage of the accessible load current in ship power station, which improves the grid reliability effectively.
杨荣峰, 于雁南, 俞万能, 王国玲, 吴德烽. 新能源船舶并网逆变器电网支撑协调控制[J]. 电工技术学报, 2019, 34(10): 2141-2154.
Yang Rongfeng, Yu Yannan, Yu Wanneng, Wang Guolin, Wu Defeng. New Energy Ship Grid-Connected Inverter Grid Support and Cooperative Control. Transactions of China Electrotechnical Society, 2019, 34(10): 2141-2154.
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2019, Vol. 34 
