SLIDING MODE CONTROL STRATEGY FOR QUASI-Z-SOURCE INVERTER IN PV GRID-CONNECTED SYSTEM

Tian Li; Yang Xiaojie

doi:10.19912/j.0254-0096.tynxb.2021-1242

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (3) : 443-449. DOI: 10.19912/j.0254-0096.tynxb.2021-1242

SLIDING MODE CONTROL STRATEGY FOR QUASI-Z-SOURCE INVERTER IN PV GRID-CONNECTED SYSTEM

Tian Li, Yang Xiaojie

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Abstract

Aiming at the problems such as light intensity change, system oscillation, anti-interference ability and anti-harmonic ability of the photovoltaic grid-connected system, an integral compensation sliding mode control strategy containing state variables is designed for capacitor voltage outer loop to ensure the relative stability of the capacitor voltage without over-harmonic and distortion. A sliding mode controller based improved switching function for the inner loop of grid-connected current to reduce chattering and improve grid-connected effect. Matlab/Simulink platform simulation results verify that the proposed method outperforms the PI and proportional resonance (PR) control strategy, and the proposed method can enhance the global robustness of the grid-connected system, effectively improve the dynamic response speed of the system and the quality of the grid-connected power, and can suppress the harmonic signal of the grid voltage.

Key words

photovoltaic / quasi-Z source inverter / sliding mode control / grid-connected system / robustness / chattering

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Tian Li, Yang Xiaojie. SLIDING MODE CONTROL STRATEGY FOR QUASI-Z-SOURCE INVERTER IN PV GRID-CONNECTED SYSTEM[J]. Acta Energiae Solaris Sinica. 2023, 44(3): 443-449 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1242

References

[1] PENG F Z.Z-source inverter[J]. IEEE transactions on industry applications, 2003, 39(2): 504-510.
[2] NGUYEN M K, LIM Y C, KIM Y G.TZ-source inverters[J]. IEEE transactions on industrial electronics, 2013, 60(12): 5686-5695.
[3] 黄守道, 王连芳, 荣飞, 等. 三相Z源逆变器的模型预测控制[J]. 电力系统及其自动化学报, 2018, 30(12): 19-26.
HUANG S D, WANG L F,RONG F,et al.Model predictive control of three-phase Z source inverter[J]. Proceedings of the CSU-EPSA, 2018, 30(12): 19-26.
[4] 杨水涛, 丁新平, 张帆, 等. Z-源逆变器在光伏发电系统中的应用[J]. 中国电机工程学报,2008, 28(17): 112-118.
YANG S T, DING X P,ZHANG F, et al.Study on Z-source inverter for photovoltaic generation system[J]. Proceeding of the CSEE, 2008, 28(17): 112-118.
[5] 丁明, 王伟胜, 王秀丽, 等. 大规模光伏发电对电力系统影响综述[J]. 中国电机工程学报, 2014, 34(1): 1-14.
DING M, WANG W S, WANG X L, et al.A review on the effect of large-scale PV generation on power systems[J]. Proceedings of the CSEE, 2014, 34(1): 1-14.
[6] CARRASCO J M, FRANQUELO L G, BIALASIEWICZ J T, et al.Power-electronics system for the grid integration of renewable energy sources: a survey[J]. IEEE transactions on industrial electronics, 2006, 53(4): 1002-1016.
[7] 唐杰, 邵武, 孟志强. 应用于光伏系统的准Z源逆变器直通控制策略[J]. 电力系统及其自动化学报, 2020, 32(8): 116-122.
TANG J, SHAO W, MENG Z Q.Straight-through control strategy for photovoltaic system based on quasi-Z source inverter[J]. Proceedings of the CSU-EPSA, 2020, 32(8): 116-122.
[8] TANG Y,XIE S J, ZHANG C H.Improved Z-source inverter with reduced Z-source capacitor voltage stress and soft-start capability[J]. IEEE transactions on power electronics, 2009, 24(2): 409-415.
[9] 李媛, 彭方正. Z源/准Z源逆变器在光伏并网系统中的电容电压恒压控制策略[J]. 电工技术学报, 2010, 26(5): 62-69.
LI Y,PENG F Z.Constant capacitor voltage control strategy of Z-source/quasi-Z-source inverter in grid-connected photovoltaic system[J]. Transactions of Electrotechnical Society, 2010, 26(5): 62-69.
[10] 李军红, 洪镇南. 三相光伏并网系统的滑模变结构控制[J]. 电力系统保护与控制, 2012, 40(12): 83-87.
LI J H, HONG Z N.Sliding modev ariable structure control for three-phase grid-connected photovoltaic system[J]. Power system protection and control, 2012, 40(12): 83-87.
[11] 何翔, 张代润. 基于滑模控制的三相光伏并网逆变器研究[J]. 电源技术, 2014, 38(4): 672-675.
HE X, ZHANG D R.Research on three-phase photovoltaic grid inverter based on sliding mode control[J]. Chinese journal of power sources, 2014, 38(4): 672-675.
[12] 刘吉宏, 刘鹏飞, 张新树, 等. LCL 型光伏并网逆变器全局鲁棒滑模变结构双闭环控制[J]. 可再生能源,2020, 38(11): 1495-1499.
LIU J H, LIU P F, ZHANG X S, et al.Global robust sliding mode variable structure double closed-loop control for grid-connected photovoltaic inverters with LCL filters[J]. Renewable energy resources, 2020, 38(11): 1495-1499.
[13] 陈智勇, 罗安, 陈燕东, 等. 逆变器并联的自适应滑模全局鲁棒电压控制方法[J]. 中国电机工程学报, 2015,35(13): 3272-3282.
CHEN Z Y,LUO A, CHEN Y D, et al.Adaptive sliding-mode global robustness voltage control for islanded parallel inverters[J]. Proceedings of the CSEE, 2015, 35(13): 3272-3282.
[14] 徐志英, 许爱国, 谢少军. 采用LCL滤波器的并网逆变器双闭环入网电流控制技术[J]. 中国电机工程学报,2009, 29(27): 36-41.
XU Z Y, XU A G, XIE S J.Dual-loop current control technique for grid-connected inverter using an LCL filter[J]. Proceedings of the CSEE, 2009, 29(27): 36-41.
[15] 姜慧鹏, 刘宜成, 蒲明, 等. 单相LCL型并网逆变器的滑模控制策略[J]. 微型机与应用, 2016, 35(10): 72-74, 78.
JIANG H P, LIU Y C, PU M, et al.Sliding mode control strategy for single-phase LCL grid-connected inverter[J]. Microcomputers and its applications, 2016, 35(10): 72-74, 78.
[16] 党超亮, 同向前, 宋卫章, 等. LCL滤波型三相并网逆变器的电流滑模控制策略[J]. 电力电子技术, 2021, 55(6): 1-4.
DANG C L, TONG X Q, SONG W Z, et al.Control strategy for three-phase inverter with LCL-type filter based on current sliding mode control method[J]. Power electronic technology, 2021, 55(6): 1-4.
[17] 陈宗祥, 蒋赢, 潘俊民, 等. 基于滑模控制的Z源逆变器在单相光伏系统中的应用[J]. 中国电机工程学报,2008, 28(21): 33-39.
CHEN Z X, JIANG Y, PAN J M,et al.A Z-source inverter for a single-phase PV system based on sliding-mode control[J]. Proceedings of the CSEE, 2008, 28(21): 33-39.
[18] 周雪松, 李康, 马幼捷. DC-DC变换器滑模变结构控制研究[J]. 电力系统及其自动化学报, 2021, 33(3): 11-17.
ZHOU X S, LI K, MA Y J.Research on sliding-mode variable-structure control of DC-DC converter[J]. Proceedings of the CSU-EPSA, 2021, 33(3): 11-17.
[19] PENG F Z,SHEN M S, QIAN Z M.Maximum boost control of the Z-source inverter[J]. IEEE transactions on power electronics, 2005, 20(4): 833-838.
[20] 游国栋, 李继生, 侯勇, 等. 光伏LCL型并网逆变器的积分滑模容错控制策略[J]. 太阳能学报, 2018, 39(4):1008-1017.
YOU G D, LI J S,HOU Y, et al.Integrated sliding mode fault tolerant control strategy for PV LCL grid-connected inverter[J]. Acta energiae solaris sinica, 2018,39(4): 1008-1017.