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Issue:
Passivity control of VSC-HVDC for offshore wind farm
Author(s):
WANG Guoqiang
,
WANG Zhixin
,
ZHANG Xueyan
Pages:
11
-
15
Year:
2011
Issue:
8
Journal:
Electric Power Automation Equipment
Keyword:
风电
;
高压直流输电
;
基于电压源变流器的柔性直流输电
;
无源性
;
变流器
;
控制
;
Abstract:
由于海上风能并网直流输电变流器模型本身存在非线性强耦合特性,常规PI调节器控制方式需调节的参数较多,难以获得理想的动态特性.提出利用非线性系统无源性理论.将变流器两相同步旋转坐标系下的数学模型以拉格朗日方程形式表达,验证被控对象为严格无源系统,选取光滑可微的正定存储函数作为Lyapunov函数,满足控制系统在原点渐近稳定要求.同时,为使系统快速收敛到期望平衡点,在控制方程中加入阻尼相加快系统能量耗...
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