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基于VSC-HVDC的统一附加阻尼最优控制方法 被引量:2
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作者 张国华 刘心旸 +4 位作者 刘卓锟 季一润 赵媛 邓文军 杨大伟 《智慧电力》 北大核心 2023年第5期80-87,共8页
相比于传统发电机的电力系统稳定器(PSS),柔性直流输电(VSC-HVDC)系统可以有效控制区域间的低频振荡。考虑到VSC-HVDC系统有功无功均能对交流系统进行独立控制,提出了基于有功无功双环控制的统一低频振荡控制器,并基于VSC的有功功率和... 相比于传统发电机的电力系统稳定器(PSS),柔性直流输电(VSC-HVDC)系统可以有效控制区域间的低频振荡。考虑到VSC-HVDC系统有功无功均能对交流系统进行独立控制,提出了基于有功无功双环控制的统一低频振荡控制器,并基于VSC的有功功率和无功功率控制分别设计附加控制回路来增加控制器的控制效果。首先采用最小二乘旋转不变(TLS-ESPRIT)辨识方法获得系统小信号模型和振荡特性,然后基于辨识出的模型,利用基于最优控制理论对控制器进行设计,并将最终所设计控制器分别附加于有功控制回路与无功控制回路。PSCAD的仿真结果表明,相比于常规的有功附加控制器,所提统一控制方法能达到更好的控制效果,并能保证鲁棒性。 展开更多
关键词 低频振荡 阻尼控制特性 VSC-HVDC 最优控制 统一控制
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NEURAL NETWORK REALIZATION OF STRUCTURAL VIBRATION CONTROL USING MR DAMPER
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作者 周丽 张志成 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2001年第2期144-150,共7页
Magnetorheological (MR) dampers are one of the most promising new devices for civil infrastructural vibration control applications. However, due to their highly nonlinear dynamic behavior, it is very difficult to obta... Magnetorheological (MR) dampers are one of the most promising new devices for civil infrastructural vibration control applications. However, due to their highly nonlinear dynamic behavior, it is very difficult to obtain of a mathematical model of inverse MR damper that has an explicit relationship between the desired damper force and the command signal (voltage). This force voltage relationship is especially required for the structural vibration control design and simulation using MR dampers. This paper focuses on using a neural network (NN) technique to emulate the inverse MR damper model. The output of the neural network can be used to command the MR damper for generating desired forces. Numerical simulations are also presented to illustrate the effectiveness of this inverse model in semi active vibration control using MR dampers. 展开更多
关键词 magnetorhelogical damper neural networks optimal control inverse dynamics
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