新能源船舶并网逆变器电网支撑协调控制

doi:10.19595/j.cnki.1000-6753.tces.181860

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摘要新能源船舶近年来发展迅速,并网逆变器是其关键设备。逆变器能够单独运行,也能与船舶柴油发电机组协调工作,支撑船舶电压与频率。本文提出柴油发电机组离网、并网及切换过程等不同模式下并网逆变器的控制策略,以解决船舶电站中电网电压与频率容易受负载突变影响的问题。离网时逆变器采用电网电压及输出电流双闭环控制,并把负载电流全前馈;并网时采用功率控制,并通过滤波器技术提取负载电流的动态分量前馈至补偿电流;两种模式切换时采用状态锁定方法避免参数突变造成的不稳定。该控制策略充分利用了船舶电站中容易获得的负载电流参数,有效地提高了船舶电网运行的可靠性。

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	杨荣峰
	于雁南
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	王国玲
	吴德烽

关键词 ：船舶电网, 逆变器, 控制, 可靠性

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.

Key words： Ship power grid inverter control reliability

收稿日期: 2018-12-05 出版日期: 2019-05-29

PACS:

TM464

基金资助:国家自然科学基金（51679106）; 福建省自然科学基金（2018J01497）; 福建省教育厅中青年教师教育科研项目（JAT170316）

作者简介: 杨荣峰,男,1979年生,博士,讲师,研究方向为大功率逆变器拓扑及控制,新结构船舶电网。E-mail:yangrf@jmu.edu.cn

引用本文:

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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