电压源变换器的LCL滤波器共振抑制技术

2014 International Conference on Renewable Energy Research and Application (ICRERA) Pub Date : 2014-12-11 DOI:10.1109/ICRERA.2014.7016506

Y. Patel, Lixiang Wei, A. Nasiri

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引用次数: 5

摘要

本文研究了缓解电压源变换器LCL滤波器谐振问题的控制技术。选择带和不带LCL滤波器被动阻尼的两电平电压源变换器进行对比研究。讨论了基于可变载波PWM的源阻抗估计控制算法。提出了利用估计的源阻抗来调整VSC的控制，以避免LCL滤波器的谐振。在某些情况下，仅通过调整控制参数无法避免LCL共振。在这些情况下，讨论了以最小性能差异运行电压源变换器的节能技术。对上述技术进行了仿真研究，并与实验结果进行了验证。

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LCL filter resonance mitigation technique for voltage source converters

This paper investigates the control technique to mitigate the LCL filter resonance issue for voltage source converters. Two level voltage source converter with and without passive damping of LCL filter are selected for the comparative study. Control algorithm is discussed to estimate the source impedance based on variable carrier PWM. Estimated source impedance is used to tune the control of the VSC to avoid the resonance of LCL filter has been presented. There have been scenarios when LCL resonance can't be avoided just by tuning the control parameter. In these cases energy efficient technique has been discussed which allows running voltage source converter with minimum performance difference. Simulation studies have been performed to evaluate the above techniques and verified with the experimental results.

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2014 International Conference on Renewable Energy Research and Application (ICRERA)

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