Control strategy of a cascaded inverter for grid-connected photovoltaic system with supercapacitor

被引：0

作者：

Xiong L. ^{[1
]}

Gui Y. ^{[1
]}

Liu H. ^{[1
]}

Gong J. ^{[2
]}

机构：

[1] Hubei Collaborative Innovation Center for High-Efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan

[2] School of Electrical Engineering, Wuhan University, Wuhan

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Hybrid cascaded; Maximum power point tracking; Photovoltaic power generation; Supercapacitor;

D O I：

10.7667/PSPC180069

中图分类号：

学科分类号：

摘要：

A hybrid cascaded PV inverter with supercapacitor energy storage is proposed to overcome the problems of power generation loss and instability of the PV system caused by dispersion of PV panel parameters, unequal sheltering and irradiation fluctuations. First, the operation principle of the inverter to compensate the PV power fluctuation with a supercapacitor cell is analyzed. Then, a control strategy based on PI control and repetitive control is proposed. It implements distributed MPPT for all PV cells with a duty modifying module to improve the power generation efficiency, and controls the power of the supercapacitor cell to smooth the output power fluctuations of the inverter. Finally, simulation and experimental results verify the feasibility of the proposed inverter and its control strategy. © 2019, Power System Protection and Control Press. All right reserved.

引用

页码：108 / 114

页数：6

共 20 条

[1]

Liu W., Yao G., He L., Et al., Research of DC voltage balance control based on multilevel cascaded APF, Power System Protection and Control, 43, 4, pp. 94-101, (2015)

[2]

Xiao B., Hang L., Mei J., Et al., Modular cascaded H-bridge multilevel PV inverter with distributed MPPT for grid-connected applications, IEEE Transactions on Industrial Electronics, 51, 2, pp. 1722-1731, (2015)

[3]

Han Y., Xu Y., Cao W., Et al., Research progress on the applications of CMC with energy storage system, Electrical Measurement & Instrumentation, 53, 11, pp. 25-31, (2016)

[4]

Ding M., Wang W., Wang X., Et al., A review on the effect of large-scale PV generation on power systems, Proceedings of the CSEE, 34, 1, pp. 2-14, (2014)

[5]

Luo Y., Tan J., Dong G., Topology of direct-current connecting cascaded photo-voltaic power station to power grid and its control strategy, Power System Protection and Control, 44, 13, pp. 14-19, (2016)

[6]

Wang F., Zhang D., Dai Z., Et al., A hybrid control scheme of cascaded H-bridge inverters for grid-connection photovoltaic systems, Transactions of China Electrotechnical Society, 31, pp. 137-145, (2016)

[7]

Liu J., Yang D., Yao W., Et al., PV-based virtual synchronous generator with variable inertia to enhance power system transient stability utilizing the energy storage system, Protection and Control of Modern Power Systems, 2, 2, pp. 429-437, (2017)

[8]

Han Z., Ren Y., Hu H., Et al., Control of PV storage grid-connection based on DC side with energy storage, Chinese Journal of Power Sources, 139, 8, pp. 1739-1741, (2015)

[9]

Chauarria J., Biel D., Guinjoan F., Et al., Energy balance control of PV cascaded multilevel grid-connected inverters under level-shifted and phase-shifted PWMs, IEEE Transactions on Industrial Electronics, 60, 1, pp. 98-111, (2013)

[10]

Negroni J., Guinjoan F., Meza C., Et al., Energy-sampled data modeling of a cascade H-bridge multilevel converter for grid-connected PV systems, 10th IEEE International Power Electronics Congress, pp. 1-6, (2006)

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