MATEC Web Conf.
Volume 355, 20222021 International Conference on Physics, Computing and Mathematical (ICPCM2021)
|Number of page(s)||14|
|Section||Mathematical Science and Application|
|Published online||12 January 2022|
Immersion and invariance based active disturbance rejection control for LCL grid-connected inverter
School of Automation and Electronic Information, Xiangtan University, Xiangtan, China
* Corresponding author: firstname.lastname@example.org
To improve the anti-disturbance ability of LCL grid-connected inverter system, a novel immersion and invariance based on active disturbance rejection control(I&I-ADRC) scheme is proposed in this paper. First, the target system with stronger anti-disturbance ability is immersed into the ADRC standard model by using the target system mapping method of immersion and invariance control. Then, the disturbance estimated by extended state observer (ESO) is compensated, and the immersion and invariance(I&I) control law is adopted to design the state error feedback（SEF）control law, thus I&I-ADRC is built, which has improved anti-disturbance ability and dynamic response performance. The stability of grid-connected inverter system is proved by Lyapunov theory. Simulation results show that the proposed strategy can effectively suppress the disturbance and has better tracking performance.
Key words: LCL filter / Grid-connected inverter / Active disturbance rejection control / Immersion and invariance control / State error feedback
© The Authors, published by EDP Sciences, 2022
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