| 引用本文: | 陈冰,刘子文,简翔浩,周钰,汤清权,张勇军.基于扰动跟踪的交直流微电网互联变流器自适应反推控制策略[J].电力自动化设备,2020,40(6): |
| CHEN Bing,LIU Ziwen,JIAN Xianghao,ZHOU Yu,TANG Qingquan,ZHANG Yongjun.Adaptive back-stepping control strategy of ILC in AC/DC microgrid based on disturbance tracking[J].Electric Power Automation Equipment,2020,40(6): |
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| 摘要: |
| 为提高交直流混合微电网在发生功率波动、并离网切换、系统参数偏差等情况下的鲁棒稳定性，提出了一种基于扰动跟踪的互联变流器(ILC)自适应反推控制策略。分析了交直流混合微电网的基本拓扑结构，并考虑系统建模误差和外界扰动的影响，将ILC实际数学模型转化为带综合干扰项的理想表达式；利用实时扰动跟踪法对系统综合干扰项进行观测和补偿，基于此提出了一种ILC自适应反推控制策略，以保证ILC能实时跟踪系统的外界干扰和误差并进行抑制，增强了系统应对功率波动和参数不确定性的能力；通过小信号稳定性分析和多个算例测试验证了所提控制策略的有效性和优越性。 |
| 关键词: 交直流微电网 互联变流器 自适应反推控制 扰动跟踪 小信号稳定性分析 |
| DOI：10.16081/j.epae.202006006 |
| 分类号:TM727 |
| 基金项目:国家自然科学基金资助项目(51777077) |
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| Adaptive back-stepping control strategy of ILC in AC/DC microgrid based on disturbance tracking |
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CHEN Bing1,2, LIU Ziwen3, JIAN Xianghao2, ZHOU Yu2, TANG Qingquan4, ZHANG Yongjun1
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1.Research Center of Smart Energy Technology, School of Electric Power, South China University of Technology, Guangzhou 510640, China;2.Guangdong Electric Power Design Institute Co.,Ltd. of China Energy Engineering Group, Guangzhou 510663, China;3.College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China;4.Guangzhou Power Electrical Technology Co.,Ltd.,Guangzhou 510670, China
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| Abstract: |
| To improve the robust stability of the hybrid AC/DC microgrid when suffering power fluctuating, grid-connected/islanded mode switching and system parameter deviating, an adaptive back-stepping control of ILC(InterLinking Converter) based on disturbance tracking is proposed. Firstly, the basic structure of the hybrid AC/DC microgrid is analyzed, and the actual mathematic model of ILC considering modeling errors and external disturbances is transformed into the nominal expression with synthetic disturbance terms. Secondly, the synthetic disturbance terms are observed and compensated using the real-time disturbance tracking method. And an adaptive back-stepping control strategy of ILC is proposed, which can track and suppress system external disturbances and errors in real time, so that enhancing system ability of dea-ling with power fluctuation and parameter uncertainty. Finally, the small-signal stability analysis and several case studies verify the effectiveness and superiority of the proposed control strategy. |
| Key words: AC/DC microgrid interlinking converter adaptive back-stepping control disturbance tracking small-signal stability analysis |
