全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

增强LCL型并网逆变器对电网阻抗鲁棒性的控制参数设计

DOI: 10.13334/j.0258-8013.pcsee.2015.10.023, PP. 2558-2566

Keywords: 并网逆变器,LCL滤波器,有源阻尼,控制延时,电网阻抗

Full-Text   Cite this paper   Add to My Lib

Abstract:

电容电流反馈有源阻尼是抑制并网逆变器中LCL滤波器谐振的有效方式。然而,由于实际电网存在变化的电网阻抗,LCL滤波器的谐振频率会在宽范围内变化,使得电容电流反馈系数的选取变得困难。特别地,当谐振频率等于1/6的采样频率(fs/6)时,无论选取多大的电容电流反馈系数,系统都无法稳定。研究适应电网阻抗宽范围变化的电容电流反馈系数的设计方法,针对不同的谐振频率,推导出系统稳定时的幅值裕度要求,通过分析电网阻抗对幅值裕度的影响,得到最优的电容电流反馈系数。采用这个反馈系数时,除了谐振频率等于fs/6之外,系统都能保持稳定。进一步地,为了提高谐振频率等于fs/6时系统的稳定性,提出环路增益的相位滞后补偿方法。最后,在一台6kW的原理样机进行实验验证,实验结果证明了理论分析的正确性。

References

[1]  Blaabjerg F,Teodorescu R,Liserre M,et al.Overview of control and grid synchronization for distributed power generation systems[J].IEEE Trans. on Industrial Electronics,2006,53(5):1398-1409.
[2]  潘冬华,阮新波,王学华,等.并网逆变器中LCL滤波器的磁集成[J].中国电机工程学报,2013,33(6):67-75.Pan Donghua,Ruan Xinbo,Wang Xuehua,et al.Magnetic integration of the LCL filter in grid-connected inverters [J].Proceedings of the CSEE,2013,33(6):67-75(in Chinese).
[3]  Hanif M,Khadkikar V,Xiao W,et al.Two degrees of freedom active damping technique for LCL filter-based grid connected PV systems[J].IEEE Trans. on Industrial Electronics,2014,61(6):2795-2803.
[4]  Alzola R,Liserre M,Blaabjerg F,et al.Analysis of the passive damping losses in LCL-filter-based grid converter [J].IEEE Trans. on Power Electronics,2013,28(6):2642-2646.
[5]  Mühlethaler J,Schweizer M,Blattmann R,et al.Optimal design of LCL harmonic filters for three-phase PFC rectifiers[J].IEEE Trans. on Power Electronics,2013,28(7):3114-3125.
[6]  Li Y.Control and resonance damping of voltage-source and current-source converters with LC filters[J].IEEE Trans. on Industrial Electronics,2009,56(5):1511-1521.
[7]  Hatua K,Jain A,Banerjee D,et al.Active damping of output LC filter resonance for vector-controlled VSI-fed AC motor drives[J].IEEE Trans. on Industrial Electronics, 2012,59(1):334-342.
[8]  Mohamed Y,Rahman M,Seethapathy R.Robust line- voltage sensorless control and synchronization of LCL- filtered distributed generation inverters for high power quality grid[J].IEEE Trans. on Power Electronics,2012,27(1):87-98.
[9]  He J,Li Y.Generalized closed-loop control schemes with embedded virtual impedances for voltage source converters with LC or LCL filters[J].IEEE Trans. on Power Electronics,2012,27(4):1850-1861.
[10]  Bao Chenlei,Ruan Xinbo,Wang Xuehua,et al.Step- by-step controller design for LCL-type grid-connected inverter with capacitor-current-feedback active-damping [J].IEEE Trans. on Power Electronics,2014,29(3):1239-1253.
[11]  Pan Donghua,Ruan Xinbo,Bao Chenlei,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.
[12]  Dannehl J,Liserre M,Fuchs F.Filter-based active damping of voltage source converters with LCL filter [J].IEEE Trans. on Industrial Electronics,2011,58(8):3623-3633.
[13]  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.
[14]  Tang Y,Loh P,Wang P,et al.Generalized design of high performance shunt active power filter with output LCL filter[J].IEEE Trans. on Industrial Electronics,2012,59(3):1443-1452.
[15]  Jia Y,Zhao J,Fu X.Direct grid current control of LCL- filtered grid-connected inverter mitigating grid voltage disturbance[J].IEEE Trans. on Power Electronics,2014,29(3):1532-1541.
[16]  Liserre M,Teodorescu R,Blaabjerg F.Stability of photovoltaic and wind turbine grid-connected inverters for a large set of grid impedance values[J].IEEE Trans. on Power Electronics,2006,21(1):263-272.
[17]  Zhou X,Fan J,Huang A.High-frequency resonance mitigation for plug-in hybrid electric vehicles’ integration with a wide range of grid conditions[J].IEEE Trans. on Power Electronics,2012,27(11):4459-4471.
[18]  Parker S,McGrath B,Holmes D.Regions of active damping control for LCL filters[J].IEEE Trans. on Industry Applications,2014,50(1):424-432.
[19]  Holmes D,Lipo T,McGrath B,et al.Optimized design of stationary frame three phase AC current regulators [J].IEEE Trans. on Power Electronics,2009,24(11):2417-2426.
[20]  Gabe I,Montagner V,Pinheiro H.Design and implementation of a robust current controller for VSI connected to the grid through an LCL filter[J].IEEE Trans. on Power Electronics,2009,24(6):1444-1452.
[21]  Driels M.Linear control systems engineering[M].Beijing: Tsinghua University Press,2000.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133