Optimum and adjustable damping control of grid-connected inverter with an LCL filter
Optimum and adjustable damping control of grid-connected inverter with an LCL filter
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DOI：
10.1109/icpe.2015.7167775
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发表时间：
2015-06
期刊：
影响因子：
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通讯作者：
T. Kato;Kaoru Inoue;Y. Akiyama;Koki Ohashi
中科院分区：
文献类型：
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作者：
T. Kato;Kaoru Inoue;Y. Akiyama;Koki Ohashi
本文利用状态反馈方法的最优控制原理，提出一种简单通用、抑制效果好的主动阻尼方法。它可以通过状态观察器的估计来减少传感器的数量。该方法可以通过调整与一类虚拟电阻相对应的控制参数来增强阻尼效果。阐述了其总体设计方法并给出了实例。通过SABRE仿真和基于DSP的数字控制系统的实验验证，有效抑制了Alter振荡频率下的调节电流误差传递函数。
This paper proposes a simple and general active damping method with good suppression effects by the optimal control principle with the state feedback approach. It may reduce number of sensors by estimations with a state observer. The proposed method can enhance the damping effects by adjustment of control parameters which correspond to a sort of virtual resistors. Its general design method and examples are described. The regulated current error transfer-functions at the oscillation frequency of the Alter are suppressed effectively by validation through simulation by SABER and experiment by a DSP-based digital control system.