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提高LCL型并网逆变器对电网阻抗鲁棒性的阻抗调节方法

DOI: 10.13334/j.0258-8013.pcsee.2015.S.027, PP. 197-204

Keywords: 有源阻尼,基于阻抗的稳定性判据,鲁棒性,电网阻抗调节

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Abstract:

电容电流反馈有源阻尼是解决LCL型并网逆变器谐振影响的有效途径。然而,当逆变器采用数字控制时,数字控制引入的控制延时会影响电容电流反馈的阻尼效果,导致并网逆变器对电网阻抗的鲁棒性变差。该文提出一种在公共耦合点并联RC支路的电网阻抗调节方法,使调整后的电网阻抗与并网逆变器的输出阻抗始终满足基于阻抗的稳定性判据。所提出的电网阻抗调节方法能够确保并网逆变器适应电网阻抗宽范围变化,且具有实现简单、可靠性高、成本低、引入的损耗小等优点。最后,在一台6kW的实验样机上做了实验验证,实验结果验证了理论分析的正确性。

References

[1]  Pan D,Ruan X,Bao C,et al.Capacitor-current-feedback active damping with reduced computation delay for improving robustness of LCL-type grid-connected inverter[J].IEEE Trans. on Power Electronics,2014,29(7):3414-3427.
[2]  Pan D,Ruan X,Bao C,et al.Optimized controller design for LCL-type grid-connected inverter to achieve high robustness against grid-impedance variation[J].IEEE Trans. on Industrial Electronics,2015,62(3):1537-1547.
[3]  Enslin J,Heskes P. Harmonic interaction between a large number of distributed power inverters and distribution network[J].IEEE Trans. on Power Electronics,2004,19(6):1586-1593.
[4]  He J,Li Y,Bosnjak D,et al.Investigation and active damping of multiple resonances in a parallel-inverter- based microgrid[J].IEEE Trans. on Power Electronics,2013,28(1):234-246.
[5]  Lindgren M,Svensson J.Control of a voltage-source converter connected to the grid through an LCL-filter- application to active filtering[C]//Proceedings of IEEE Power Electronics Specialists Conference.Japan :Fukuoka,1998:229-235.
[6]  王学华,阮新波,刘尚伟.抑制电网背景谐波影响的并网逆变器控制策略[J].中国电机工程学报,2011,31(6):7-14.Wang Xuehua,Ruan Xinbo,Liu Shangwei.Control strategy for grid-connected inverter to suppress current distortion effected by background harmonics in grid voltage[J].Proceedings of the CSEE,2011,31(6):7-14(in Chinese).
[7]  Yang S,Lei Q,Peng F,et al.A robust control scheme for grid-connected voltage-source inverters[J].IEEE Trans. on Industry Electronics,2011,58(1):202-212.
[8]  Liserre M,Teodorescu R,Blaabjerg F.Analysis of the passive damping losses in LCL-filter-based grid converters[J].IEEE Trans. on Power Electronics,2013,28(6):2642-2646.
[9]  Andersen G,Klumpner C,Kjar S,et al.A new green power inverter for fuel cells[C]//Proceedings of IEEE Power Electronics Specialists Conference.Cairns,Queensland:IEEE,2002:727-733.
[10]  Dahono P,Bahar Y,Sato Y,et al.Damping of transient oscillations on the output LC filter of PWM inverters by using a virtual resistor[C]//Proceedings of IEEE International Conference on Power Electronics and Drive Systems.Bali:Indonesia,2001:403-407.
[11]  Lei Y,Zhao Zh,He F,et al.An improved virtual resistance damping method for grid-connected inverters with LCL filters[C]//Proceedings of IEEE Energy Conversion Congress and Exposition.Phoenix:Arizona,2011:3816-3822.
[12]  Serpa L,Ponnaluri S,Barbosa P,et al.A modified direct power control strategy allowing the connection of three-phase inverters to the grid through LCL filters [J].IEEE Trans. on Industry Applications,2007,43(5):1388-1400.
[13]  潘冬华,阮新波,王学华,等.增强LCL型并网逆变器对电网阻抗鲁棒性的控制参数设计[J].中国电机工程学报,2015,35(10):2558-2566.Pan Donghua,Ruan Xinbo,Wang Xuehua,et al. Controller design for LCL-type grid-connected inverter to achieve high robustness against grid-impedance variation [J].Proceedings of the CSEE,2015,35(10):2558-2566 (in Chinese).
[14]  Wang F,Duarte J,Hendrix M,et al.Modeling and analysis of grid harmonic distortion impact of aggregated DG inverters[J].IEEE Trans. on Power Electronics,2011,26(3):786-795.
[15]  鲍陈磊,阮新波,王学华,等.基于PI调节器和电容电流反馈有源阻尼的LCL型并网逆变器闭环参数设计[J].中国电机工程学报,2012,32(25):133-142.Bao Chenlei,Ruan Xinbo,Wang Xuehua,et al.Design of grid-connected inverters with LCL filter based on PI regulator and capacitor current feedback active damping [J].Proceedings of the CSEE,2012,32(25):133-142(in Chinese).
[16]  Yang D,Ruan X, Wu H.Impedance shaping of grid -connected inverter with LCL filter to improve its adaptability to the weak grid condition[J].IEEE Trans. on Power Electronics,2014,29(11):5795-5805.
[17]  Sun J.Impedance-based stability criterion for grid connected inverters[J].IEEE Trans. on Power Electronics,2011,26(11):3075-3078.
[18]  Buso S,Mattavelli P.Digital control in power electronics [M].Seattle,WA:Morgan & Claypool,2006:17-40.
[19]  Wang X,Bao C,Ruan X,et al. Design consideration of digital control LCL-filtered inverter with capacitor- current-feedback active damping[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics,2014,2(4):972-984.

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