A Sliding Mode Controller Based on Robust Model Reference Adaptive Proportional-integral Control for Stand-alone Three-phase Inverter

• Main Authors: Hadi Esmaeili, Mehdi Asadi
• Format: Article
• Language: English
• Published: IEEE 2021-01-01
• Series: Journal of Modern Power Systems and Clean Energy
• Subjects: Robust model reference adaptive proportional-integral (RMRA-PI) control; stand-alone inverter; three-phase inverter; voltage control; Lyapunov's theory
• Online Access: https://ieeexplore.ieee.org/document/9112768/

This paper proposes a sliding mode controller based on robust model reference adaptive proportional-integral (RMRA-PI) control for a stand-alone voltage source inverter (SA-VSI). The proposed controller has two control loops where the coefficients of PI controller are regulated by the adaptive sliding law. This method is used to regulate the output voltage of the inverter under different load conditions and uncertainty, and adapts the output to the reference model to reduce the total harmonic distortion (THD). In this paper, the stability of the proposed controller is proven by using Lyapunov's theory and Barbalet's lemma. The proposed controller performs well in voltage regulation such as low THD under sudden load change and uncertainty. Also, the results of the proposed controller are compared with PI controller to show the effectiveness of the presented control system.