A high-performance nonlinear control strategy of three-phase VSG systems

被引：0

作者：

Meng, Jianhui ^{[1
]}

Shi, Xinchun ^{[1
]}

Fu, Chao ^{[1
]}

Wang, Yi ^{[1
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, Hebei Province

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2014年 / 34卷 / 06期

关键词：

Complete feedback linearization; Feedback regulation; Nonlinear control; Pulse width modulation rectifier; Voltage sag generator (VSG);

D O I：

10.13334/j.0258-8013.pcsee.2014.06.006

中图分类号：

学科分类号：

摘要：

To improve the response of the rectifier side when the inverter side of voltage sag generator (VSG) simulates that voltage sags, a novel high-performance control strategy based on nonlinear control was proposed. In the proposal an energy function which relative degree is two and reactive current component were considered as outputs. Then a full feedback linearization of the under-actuated three-phase pulse width modulation (PWM) rectifier was obtained without model simplifications, thus avoiding zero dynamics of the system. The feedback regulation based on the energy function was used to improve the robustness against model parameter uncertainties. In addition, a simple open loop controller which can realize balanced and partial unbalanced voltage sags was designed for the inverter side of VSG according to the vector relationship of three-phase voltages. Digital simulation and practical experimental results show that the proposed control strategy has good performance in improving dynamic response when the VSG system voltage sags, guaranteeing fast regulation and stability of dc-bus voltage and achieving unity power factor control for input AC voltage. © 2014 Chinese Society for Electrical Engineering.

引用

页码：863 / 871

页数：8

共 26 条

[1]

Q/GDW 392-2009 Technical rule for connecting wind farm into power grid, (2010)

[2]

Q/GDW 617-2011 Technical rule for photovoltaic power station connected to power grid, (2011)

[3]

Hu S., Li J., Liang L., Et al., Review of voltage sag generator for wind power, Electric Power Automation Equipment, 28, 2, pp. 101-103, (2008)

[4]

Senturk O.S., Hava A.M., A simple sag generator using SSRs, IEEE Transactions on Industrial Applications, 48, 1, pp. 172-180, (2012)

[5]

Zhang X., Zhang C., PWM Rectifier and its Control, pp. 49-112, (2012)

[6]

Zhang B., Yan X., Wang S., Et al., Method of three-phase voltage sag forming based on dq transformation, Transactions of China Electrotechnical Society, 26, 10, pp. 55-61, (2011)

[7]

Eloy-Garcia Carrasco J., Tena J.M., Ugena D., Et al., Testing low voltage ride through capabilities of solar inverters, Electric Power Systems Research, 96, 6, pp. 111-118, (2013)

[8]

Wang W., Yin H., Guan L., Parameter setting for double closed-loop vector control of voltage source PWM rectifier, Transactions of China Electrotechnical Society, 25, 2, pp. 67-72, (2010)

[9]

Wang J., Li H., Wang L., Direct power control system of three phase boot type PWM rectifiers, Proceedings of the CSEE, 26, 18, pp. 54-60, (2006)

[10]

Wu X.H., Panda S.K., Xu J.X., Design of a plug-in repetitive control scheme for eliminating supply-side current harmonics of three-phase PWM boost rectifiers under generalized supply voltage conditions, IEEE Transactions on Power Electronics, 25, 7, pp. 1800-1810, (2010)

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