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ISSN 0254-0096 CN 11-2082/K

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (2): 224-228.DOI: 10.19912/j.0254-0096.tynxb.2021-1175

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GRID CONNECTION FOR MULTI HPGS IN WEC BASED ON INVERTER IN DC VOLTAGE MODE

Wang Kunlin, Sheng Songwei, Ye Yin, Wang Zhenpeng, Wang Wensheng, Lin Hongjun   

  1. 1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
    2. Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China;
    3. Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China;
    4. CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China
  • Received:2021-09-28 Online:2023-02-28 Published:2023-08-28

基于逆变器直流电压模式波能装置并网接入方法

王坤林, 盛松伟, 叶寅, 王振鹏, 王文胜, 吝红军   

  1. 1.中国科学院广州能源研究所,广州 510640;
    2.南方海洋科学与工程广东省实验室(广州),广州 511458;
    3.中国科学院南海生态环境工程创新研究院,广州 510301;
    4.中国科学院可再生能源重点实验室,广州 510640
  • 通讯作者: 叶 寅(1986—),男,硕士、助理研究员,主要从事海洋能方面的研究。Yeyin@ms.giec.ac.cn
  • 基金资助:
    科技部重点研发计划(2019YFB1504405); 三亚崖州湾科技城科研项目(SKJC-2020-01-007); 海洋可再生能源资金项目(GHME2017SF01)

Abstract: The method of DC voltage supported by batteries is difficulty to meet the installed power increasing of wave energy converter (WEC). A grid connection method for multi hydraulic power generation set (HPGS) based on inverter in DC voltage mode is proposed. The DC voltage is supported by inverter for multi HPGSs, and DC nano grid without batteries is established in WEC. The topology of DC voltage mode of inverter and the control strategy of DC voltage outer feedback loop are established. Through the computer simulation test of multi HPGS based on inverter DC voltage mode, the feasibility of grid connection method of multi HPGS without batteries is verified. The research results have been applied to the 500 kW “Chang Shan Hao” WEC, which lays a foundation for the grid connection system of high power WEC.

Key words: wave energy converter, batteries, DC nano grid, DC voltage mode, hydraulic power generation set

摘要: 针对采用蓄电池提供直流母线电压难于满足波能装置装机容量不断增长需求的问题,提出基于逆变器直流电压模式的多液压发电机组并网接入方法。逆变器为液压发电机组直接提供直流母线电压,组建成波能装置无蓄电池组支撑的直流纳电网。建立了逆变器直流电压模式电路拓扑和直流电压外环控制回路。通过多液压发电机组波能装置基于逆变器直流电压模式仿真试验,验证了无蓄电池组波能装置并网接入方法的可行性。该研究成果已应用到500 kW“长山号”波能装置中,为大功率波能装置并网系统研究奠定了基础。

关键词: 波能装置, 蓄电池组, 直流纳电网, 直流电压源模式, 液压发电机组

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