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三相光伏并网逆变器控制策略

, PP. 64-70

Keywords: 光伏并网逆变,dq旋转坐标系,比例积分+比例谐振级联,电压前馈,特定谐波抑制

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Abstract:

在三相光伏并网逆变应用中,如何改善并网电流质量是备受关注的问题。采用LCL滤波器并网虽然提高了滤波效果,减小了滤波器体积,但是控制变得复杂。结合现有控制方法,本文提出了在dq同步旋转坐标系下带有电网电压前馈的比例积分(PI)级联比例谐振(PR)控制思路。建立了dq系下的三相逆变器模型,进行了控制器的分析推导,采用电压前馈改善了并网接入时的动态特性,通过PI实现了并网电流的无静差跟踪控制,级联PR实现了对特定谐波分量的有效抑制。最后,进行了仿真及在实际100kW光伏阵列下的并网逆变测试,实验结果表明该控制方案可以实现并网电流的平滑起动,能有效地降低并网电流的谐波含量。

References

[1]  Liu Fei, Zhou Yan, Duan Shanxu, et al. Parameter design of a two-current-loop controller used in a grid-connected inverter system with LCL filter [J]. IEEE Transactions on Industrial Electronics, 2009, 56 (11): 4483-4491.
[2]  Teodorescu R, Blaabjerg F, Borup U, et al. A new control structure for grid connected LCL PC inverters with zero steady state error and selective harmonic compensation[C]. Applied Power Electronics Conference and Exposition, 2004: 580-586.
[3]  Timbus A V, Ciobotaru M, Teodorescu R, et al. Adaptive resonant controller for grid-connected converters in distributed power generation systems [C]. Applied Power Electronics Conference and Exposition, 2006: 1601-1606.
[4]  赵清林, 郭小强, 邬伟扬. 单相逆变器并网控制技术研究[J]. 中国电机工程学报, 2007, 27(16): 60-64.
[5]  Zhao Qinglin, Guo Xiaoqiang, Wu Weiyang. Research on control strategy for single-phase grid-connected inverter[J]. Proceedings of the CSEE, 2007, 27(16): 60-64.
[6]  Chen Yun, Liu Fei. Design and control for three phase grid connected photovoltaic inverter with LCL filter[C]. IEEE Circuits and Systems International Conference on Testing and Diagnosis, 2009:1-4.
[7]  Karshenas Hamid R, Saghafi Hadi. Basic criteria in designing lcl filters for grid connected converters[C]. IEEE International Symposium on Industrial Electronics, 2006: 1996-2000.
[8]  Jung Eunsoo, Sul Seung Ki. Implementation of grid-connected single-phase inverter based on FPGA[C]. Applied Power Electronics Conference and Exposition, 2009: 889-893.
[9]  Se Kyo Chung. A phase tracking system for three phase utility interface inverters[J]. IEEE Transactions on Industrial Electronics, 2000, 15 (3): 431-438.
[10]  Timbus A, Teodorescu R, Blaabjerg F, et al. Synchronization methods for three phase distributed power generation systems[C]. Power Electronics Specialists Conference, 2005: 2474-2481.
[11]  王兆安, 黄俊. 电力电子技术[M]. 北京: 机械工业出版社, 2000.
[12]  Zhang Richard. High performance power converter systems for nonlinear and unbalanced load source[D]. Blackburg, Virginia: Faculty of the Virginia Polytechnic Institute and State University, 1998.
[13]  Shen Guoqiao, Zhu Xuancai, Chen Min, et al. A new current feedback PR control strategy for connected vsi with an LCL filters[C]. Applied Power Electronics Conference and Exposition, 2009: 1564-1569.
[14]  沈国桥, 徐德鸿. LCL 滤波并网逆变器的分裂电容法电流控制[J]. 中国电机工程学报, 2008, 28(18): 36-41.
[15]  Shen Guoqiao, Xu Dehong. Current control for grid-connected inverters by splitting the capacitor of LCL filter[J]. Proceedings of the CSEE, 2008, 28(18): 36-41.

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