Optimal Tracking With Disturbance Rejection of Voltage Source Inverters
Optimal Tracking With Disturbance Rejection of Voltage Source Inverters
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DOI：
10.1109/tie.2019.2927177
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发表时间：
2020-06
影响因子：
7.7
通讯作者：
Jiaxin Teng;Weinan Gao;D. Czarkowski;Zhong-Ping Jiang
中科院分区：
文献类型：
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作者：
Jiaxin Teng;Weinan Gao;D. Czarkowski;Zhong-Ping Jiang
针对负载动态不确定的三相电压源逆变器，提出了一种新的电压调节器设计方法。与现有文献不同的是，将负荷视为动态不确定性，通过最优输出调节理论与反推方法相结合，提出了一种鲁棒最优状态反馈控制器。为了避免感应电感电流，输出反馈控制方案的开发以及。逆变器负载系统的稳定性进行了严格的分析，通过小增益技术。通过所设计的状态反馈和输出反馈控制器，保证了跟踪误差渐近收敛到零。一个标准的比例谐振控制器也被设计用于比较的目的。结果表明，所提出的控制器具有固有的鲁棒性，不需要重新调整不同的应用。控制器的设计方法是广义的并网应用，因为电网可以被视为一个稳定的负载系统。仿真和实验结果表明了控制方法的有效性。
This paper presents a novel voltage regulator design methodology for a three-phase voltage source inverter with uncertain load dynamics. Different from existing literature, the load is treated as a dynamic uncertainty and a robust optimal state-feedback controller is proposed through the integration of optimal output regulation theory and backstepping method. To avoid sensing the inductor current, an output-feedback control scheme is developed as well. Stability of the inverter–load system is rigorously analyzed via the small-gain techniques. It is ensured that the tracking error asymptotically converges to zero through both the proposed state-feedback and output-feedback controllers. A standard proportional resonant controller is also designed for the purpose of comparison. It is shown that the proposed controller has inherent robustness and does not require retuning with different applications. The controller design method is generalized for grid-tie applications, since the grid can be regarded as a stable load system. Simulations and experimental results show the effectiveness of the control approaches.