Cost-effective deadbeat current control for wind-energy inverter application with LCL filter
Cost-effective deadbeat current control for wind-energy inverter application with LCL filter
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DOI：
10.1109/tia.2013.2279900
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
K. Nishida;T. Ahmed;Mutsuo Nakaoka
中科院分区：
文献类型：
--
作者：
K. Nishida;T. Ahmed;Mutsuo Nakaoka
本文提出了并网逆变器输出 LCL 滤波器的无差拍控制系统的解析表达式，其稳定时间为三个采样周期。与传统的分析不同，所提出的控制算法是在所描述的时域而不是s域中推导的。此外，不仅可以独立控制积分有功功率，还可以独立控制无功功率。所提出的无差拍控制系统的实验结果表明，电网和转换器电流的反馈具有相同的衰减开关频率分量和阻尼谐振的最高能力。这是因为未检测到的两个剩余控制变量可以在 DSP 中估计。
This paper proposes analytical expressions of a deadbeat control system for the output LCL filter in a grid-connected inverter with a settling time of three sampling periods. Unlike the conventional analysis, the proposed control algorithm is derived in the descritised time-domain instead of the s-domain. Furthermore, not only integrated active power but also reactive power can be controlled independently. Experimental results of the proposed deadbeat control system indicate that the feedback of both grid and converter currents have the same highest capabilities of attenuating switching frequency components and damping resonance. This is due to the undetected two remained control variables are possible to be estimated in the DSP.