Dead-beat current control for active filters
Dead-beat current control for active filters
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DOI：
10.1109/iecon.1998.723020
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发表时间：
1998-08
期刊：
影响因子：
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通讯作者：
L. Malesani;P. Mattavelli;S. Buso
中科院分区：
文献类型：
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作者：
L. Malesani;P. Mattavelli;S. Buso
本文讨论了数字控制并联型有源电力滤波器实现的主要问题。所考虑的控制策略是基于逆变器电流的无差拍控制和空间矢量调制的组合。对于有源滤波器应用，功率转换器控制的关键特征是可实现的谐波补偿质量（符合TEC标准）和系统稳定性的鲁棒性（负载结构和参数不确定性）。这两个方面的文件进行了审查。就前者而言，仿真和实验测试表明，即使实现了高开关频率（使用最先进的DSP平台），无差拍算法的固有计算延迟也是实现满意补偿质量的严重障碍。相反，从稳定性的角度来看，参数失配对系统性能的影响进行了研究，通过一个完整的特征值分析，它允许揭示所考虑的控制策略的不同可能的实现系统的稳定性的限制。
The paper discusses the main issues concerning the implementation of digitally controlled parallel active power filters. The considered control strategy is based on the combination of dead-beat control of inverter currents and space vector modulation. For an active filter application, key features of the power converter's control are the achievable harmonic compensation quality (TEC standards compliance) and the robustness of the system's stability (load structure and parameter uncertainty). Both aspects are examined in the paper. As far as the former is concerned, simulations and experimental tests show that even if a high switching frequency is achieved (using a state-of-the-art DSP platform), the intrinsic calculation delay of the dead-beat algorithm represents a serious hurdle for the achievement of a satisfactory compensation quality. From the stability standpoint instead, the effects of parameter mismatches on the system's performance are investigated by means of a complete eigenvalue analysis, which allows to reveal the limits of the system's stability for different possible implementations of the considered control strategy.