MESO-based Robustness Voltage Sliding Mode Control for AC Islanded Microgrid

doi:10.23919/CJEE.2020.000013

Chinese Journal of Electrical Engineering ›› 2020, Vol. 6 ›› Issue (2): 83-93.doi: 10.23919/CJEE.2020.000013

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MESO-based Robustness Voltage Sliding Mode Control for AC Islanded Microgrid

Hao Pan^*, Qingfang Teng, Dangdang Wu

School of Electrical Engineering and Automation, Lanzhou Jiaotong University, Lanzhou 730070, China

Received:2019-11-07 Revised:2020-03-26 Accepted:2020-04-28 Online:2020-06-25 Published:2020-07-13
Contact: * Email: 1255851182@qq.com
About author:Hao Pan was born in Gansu Province, China, on October, 1993. He is studying for a master's degree in electrical engineering at the Lanzhou Jiaotong University, Lanzhou, China. His research interests concern DC-AC inverter control, sliding mode control as well as active disturbance rejection control.
Qingfang Teng received the B.S. degree in aviation automation control from Northwestern Polytechnical University, Xi'an, Shaanxi, in 1985. She received the M.S. degree and the Ph.D. degree in traffic information engineering and control from Lanzhou Jiaotong University, Lanzhou, Gansu, in 2003 and 2008. She is currently a professor of control engineering in the Department of Automation and Electrical Engineering. Her research interests include high accuracy control and fault tolerant control for electrical machine.
Dangdang Wu was born in Gansu Province, China, on July, 1993. She is studying for a master's degree in electrical engineering at the Lanzhou Jiaotong University, Lanzhou, China. Her research interests concern energy storage control, sliding mode control as well as active disturbance rejection control.

Abstract

Abstract: A new modified extended state observer (MESO)-based robustness voltage sliding mode control (SMC) strategy is proposed for an AC islanded microgrid under system uncertainties including system parameter and load variation. First, the disturbance effect on the system is regarded as a lumped uncertainty, and a state space model of the uncertain islanded microgrid system is established. Then, a modified extended state observer is designed to estimate external disturbances and internal perturbation. Finally, considering the lumped uncertainty, a sliding mode controller with a multi-power reaching law is proposed to enable the output voltage of the system to track its reference voltage rapidly and accurately, and to enhance the robustness of the system. The simulation results confirm that the proposed robustness voltage control strategy can perform satisfactory voltage control and demonstrate a strong capability to reject parameter and load variation.

Key words: Islanded microgrid, modified extended state observer, multi-power reaching law, system uncertainties, robustness voltage sliding mode control

Hao Pan, Qingfang Teng, Dangdang Wu. MESO-based Robustness Voltage Sliding Mode Control for AC Islanded Microgrid[J]. Chinese Journal of Electrical Engineering, 2020, 6(2): 83-93.

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MESO-based Robustness Voltage Sliding Mode Control for AC Islanded Microgrid

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