基于反馈线性化鲁棒控制μ方法的准开关升压型逆变器光伏并网策略

薛阳; 李华郁; 阚东跃; 时宇飞; 陈明超

引用本文:	薛阳,李华郁,阚东跃,等.基于反馈线性化鲁棒控制μ方法的准开关升压型逆变器光伏并网策略[J].电力系统保护与控制,2017,45(1):47-52.
	XUE Yang,LI Huayu,KAN Dongyue,et al.Research on grid-connected control for the quasi-switched boost inverter of photovoltaic system based on feedback linearization and μ-synthesis method[J].Power System Protection and Control,2017,45(1):47-52

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基于反馈线性化鲁棒控制μ方法的准开关升压型逆变器光伏并网策略
薛阳¹,李华郁¹,阚东跃¹,时宇飞¹,陈明超²
(1.上海电力学院自动化工程学院，上海 200090;2.江苏国艾电气有限公司，江苏盐城 224051)

摘要:

与Z源逆变器相比，准开关升压型逆变器降低了电路体积及成本，更适用于光伏并网系统。将光伏并网系统中的不确定性考虑在内，提出一种基于反馈线性化鲁棒控制μ方法的准开关升压型逆变器光伏并网策略。利用反馈线性化方法建立准开关升压型逆变器逆变侧的仿射线性数学模型，并采用μ方法设计控制器K。仿真结果表明，在外界条件变化时，具有较好的动态性能，能够迅速恢复稳态，且始终保持着较高的功率因数；在参数变化时，对并网质量影响较小。

关键词: 光伏系统并网 Z源逆变器准开关升压型逆变器鲁棒控制反馈线性化 m综合

DOI：10.7667/PSPC160065

分类号:

基金项目:上海市自然科学基金资助项目(13ZR1417800); 国家自然科学基金资助项目(51405286);上海市重点科技攻关计划项目(14110500700);上海市电站自动化技术重点实验室(13DZ2273800)

Research on grid-connected control for the quasi-switched boost inverter of photovoltaic system based on feedback linearization and μ-synthesis method

XUE Yang¹,LI Huayu¹,KAN Dongyue¹,SHI Yufei¹,CHEN Mingchao²

(1.College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China;
;2. Jiangsu Guoai Electric Co., Ltd., Yancheng 224051, China)

Abstract:

Compared with the Z source inverter, the circuit cost of the quasi switching boost inverter is greatly reduced. Therefore, it is more suitable for photovoltaic grid connected system. Research on grid-connected control for the quasi-switched boost inverter of photovoltaic system based on feedback linearization and μ-synthesis method is proposed when the uncertainty of the grid connected photovoltaic system is considered. Using feedback linearization method establishes the mathematical model of the inverter side. The controller K is designed by m-synthesis method. The method is simulated and verified. It has better dynamic performance when the external conditions are changed. And it can quickly restore the steady state and maintain a high power factor. When the parameter changes, it has less influence on the quality of grid connection. This work is supported by Natural Science Foundation of Shanghai (No. 13ZR1417800) and National Natural Science Foundation of China (No. 51405286), Shanghai Key Technologies R & D Program (No. 14110500700), and Key Laboratory for Substation Automatic Technique of Shanghai (No. 13DZ2273800).

Key words: photovoltaic grid-connected Z-source inverter quasi-switched boost inverter robust control feedback linearization non minimum phase system μ-synthesis

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