Voltage fluctuation suppression strategy of DC bus based on improved linear active disturbance rejection control

Mengyan Cao; Youjie Ma; Xuesong Zhou; Xinyue Wang; Bo Wang; Qing Yang

doi:10.1117/12.3004612

25 September 2023 Voltage fluctuation suppression strategy of DC bus based on improved linear active disturbance rejection control

Mengyan Cao, Youjie Ma, Xuesong Zhou, Xinyue Wang, Bo Wang, Qing Yang

Author Affiliations +

Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 127883O (2023) https://doi.org/10.1117/12.3004612
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia

Abstract

The photovoltaic microgrid has complex characteristics such as multivariable and strong coupling. To solve the problem that traditional controllers are difficult to achieve ideal control effect, this paper introduces the improved second-order linear active disturbance rejection control technology to the control of the interface converter at the load end of the microgrid. Firstly, the plant is analyzed and the model information is extracted according to the state-space average method. Based on the traditional linear active disturbance rejection controller, the correction function and filter function are introduced to solve the problem of noise sensitivity measurement while the traditional linear active disturbance rejection control(TLADRC) is enhanced with disturbance rejection. On the premise of ensuring the stability of the system, the improved structure is used to improve the anti-disturbance and anti-noise of the system. Finally, the control strategy proposed in this paper and the voltage waveform of DC bus side under linear active disturbance rejection control are compared by simulation under different working conditions, which shows that the active disturbance rejection control strategy proposed in this paper has better control performance.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Mengyan Cao, Youjie Ma, Xuesong Zhou, Xinyue Wang, Bo Wang, and Qing Yang "Voltage fluctuation suppression strategy of DC bus based on improved linear active disturbance rejection control", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 127883O (25 September 2023); https://doi.org/10.1117/12.3004612

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KEYWORDS

Control systems

Photovoltaics

Circuit switching

Design and modelling

Tunable filters

Inductance

Mathematical modeling

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