Model-based generation of low distortion currents in grid-coupled PWM-inverters using an LCL output filter
Model-based generation of low distortion currents in grid-coupled PWM-inverters using an LCL output filter
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DOI：
10.1109/tpel.2006.876840
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发表时间：
2006-07
期刊：
影响因子：
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通讯作者：
B. Bolsens;K. D. Brabandere;J. V. D. Keybus;Johan Driesen;R. Belmans
中科院分区：
文献类型：
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作者：
B. Bolsens;K. D. Brabandere;J. V. D. Keybus;Johan Driesen;R. Belmans
在这项工作中，一个单相LCL输出级的栅极耦合应用程序的建立和评估。实现了输出滤波器和畸变电网电压的精确模型和观测器。本文讨论了一个14状态模型的构造，以及反馈控制回路，以获得良好的闭环响应。仿真结果表明，该控制器具有良好的性能，总谐波电流失真（THD）小于1%。实验结果证实了仿真，并说明了良好的操作卡尔曼观测器估计失真的电网电压（THD 3%）。输出滤波器有效地减少了电网电流中的PWM谐波。
In this work, a single phase LCL output stage for grid coupled applications is built and evaluated. An accurate model and observer of the output filter and the distorted grid voltage is implemented. This paper deals with the construction of a 14-state model, and the feedback control loop to obtain good closed loop response. Simulations indicate a good performance of the controller, with a total harmonic current distortion (THD) below 1%. Experimental results confirm the simulations, and illustrate the good operation of the Kalman observer to estimate the distorted grid voltage (THD 3%). The output filter effectively reduces the PWM harmonics in the grid current.