Control of DC-capacitor peak voltage in reduced capacitance single-phase STATCOM
Control of DC-capacitor peak voltage in reduced capacitance single-phase STATCOM
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降容单相 STATCOM 中直流电容器峰值电压的控制
DOI：
10.1109/compel.2016.7556773
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Molinas
中科院分区：
文献类型：
--
作者：
T. Isobe;Long Zhang;H. Tadano;J. Suul;M. Molinas
本文讨论了一种降低直流电容的单相STATCOM的设计与控制。首先演示了如何在不增加最大直流电压的情况下，在不增加最大直流电压的情况下，以减小的直流电容和较大的直流电压振荡来操作，只要只需要无功注入的操作即可。在此基础上，提出了一种基于自适应滤波器动态检测直流电压振荡均值和幅值的直流峰值电压控制方法。仿真和实验表明，所提出的控制策略可以有效地在各种运行条件下调节直流电容器的峰值电压。
This paper discusses the design and control of a single-phase STATCOM with reduced dc capacitance. It is first demonstrated how operation with reduced dc capacitance and large dc voltage oscillations can be possible without increasing the maximum dc voltage, as long as only operation for reactive power injection is required. Then, a method for dc peak voltage control is proposed, based on adaptive filters for dynamically detecting the average value and the amplitude of the dc voltage oscillations. It is demonstrated by simulations and experiments that the presented control strategy can be effectively utilized to regulate the peak voltage in the dc capacitor under various operating conditions.