Modeling and Sliding Mode Control for Three-Phase Active Power Filters Using the Vector Operation Technique
Modeling and Sliding Mode Control for Three-Phase Active Power Filters Using the Vector Operation Technique
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DOI：
10.1109/tie.2018.2795528
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发表时间：
2018-01
影响因子：
7.7
通讯作者：
J. Morales;L. de Vicuna;Ramón Guzmán;M. Castilla;J. Miret
中科院分区：
文献类型：
--
作者：
J. Morales;L. de Vicuna;Ramón Guzmán;M. Castilla;J. Miret
传统上，矢量运算技术（VOT）已被用于控制三相转换器使用一个周期控制。本文提出了一种新坐标系下的三相有源电力滤波器大信号模型。通过使用VOT，只有两个相腿在高频下切换，从而降低了开关损耗。本文不仅填补了文献空白的三相变换器的建模使用矢量运算，但也提出了一种滑模控制这种变换器。该控制方案包括一个非线性矩阵变换，以获得在一个新的二维框架，$\gamma \theta$-帧，在这些坐标设计的滑模控制器中的电压和电流，和一个调制器，以获得在一个自然的框架中的控制信号。滑模控制的设计与所提出的大信号模型的帮助下，确保正弦电网电流与电网电压的相位。该控制器对负载突变具有快速的瞬态响应，并具有良好的电流跟踪能力和降低的开关损耗。进行稳定性分析，以验证控制参数。使用全数字控制系统，以验证所提出的控制器的性能提供了实验结果。
Traditionally, the vector operation technique (VOT) has been used to control three-phase converters using one cycle control. In this paper, a three-phase active power filter large-signal model with a VOT in a new coordinate system is presented. By using the VOT, only two phase-legs are switching at high frequency, thus reducing the switching losses. This paper not only covers the literature gap about the modeling of three-phase converters using the vector operation, but also presents a sliding mode control for this converter. The control scheme consists of a nonlinear matrix transformation in order to obtain the voltages and currents in a new two-dimensional frame, $\gamma \theta$-frame, a sliding mode controller designed in these coordinates, and a modulator to obtain the control signals in a natural frame. The sliding mode control is designed with the help of the presented large-signal model assuring sinusoidal grid currents in phase with the grid voltages. This controller provides a fast transient response against sudden load changes with a good current tracking capability and a reduction of the switching losses. A stability analysis is performed in order to validate the control parameters. Experimental results are provided using a fully digital control system in order to validate the performances of the proposed controller.