基于lcl滤波器的三相并网逆变器加权平均电流控制

Proceedings of The 7th International Power Electronics and Motion Control Conference Pub Date : 2012-06-02 DOI:10.1109/IPEMC.2012.6258952

Ning He, Dehong Xu, Ye Zhu, Jun Zhang, G. Shen, Yangfan Zhang, Jie Ma, Changjin Liu

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引用次数: 77

摘要

提出了一种新的加权平均电流控制方法，用于带lc滤波器的三相并网逆变器的阻尼控制。利用WACC，电网逆变器的三相电流控制可以在同步旋转框架(SRF)下解耦。此外，系统传递函数由六阶系统退化为一阶系统。因此，可以增加控制环路的增益和带宽。从而使电网系统的电流控制易于优化，从而获得更高的电能质量和良好的动态特性。在30kW三相并网逆变器样机上对WACC进行了验证。

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Weighted Average Current control in three-phase grid inverter with LCL-filter

A novel control method, named Weighted Average Current control (WACC) is proposed for damping control of three-phase grid inverter with LCL-filter. With WACC, three-phase current control of the grid inverter can be decoupled under synchronous rotating frame (SRF). Besides the system transfer function is degraded from the 6th order system to the 1st order one. Consequently, the control loop gain and bandwidth can be increased. Therefore the current control of the grid system is able to be optimized easily for higher power quality and good dynamics. WACC is verified with the experiment on a 30kW three-phase grid inverter prototype.

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Proceedings of The 7th International Power Electronics and Motion Control Conference

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