Model Reference Adaptive Control (MRAC) is useful for achieving a desired dynamic response with no prior knowledge of system parameters. Traditional MRAC is sensitive to noise in the state variables, leading to adaptation parametric drift. The drift in parameters, if left unchecked, leads to loss of closed loop stability. In power electronic systems, the ripple in the output voltage serves as a bounded noise, which leads to MRAC instability. This drift phenomenon is observed through the simulation and hardware experimentation of a Dual Active Bridge (DAB) converter and mitigated using deadzone modification and σ modification approaches. These two methods are then compared to evaluate their respective strengths and weaknesses for practical hardware implementation of power electronics using MRAC.
K. J. Veeramraju et al., "Robust Modifications to Model Reference Adaptive Control for Reference Voltage Tracking in a Dual Active Bridge Dc-Dc Converter," 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022, Institute of Electrical and Electronics Engineers, Jan 2022.
The definitive version is available at https://doi.org/10.1109/ECCE50734.2022.9947779
Electrical and Computer Engineering
Keywords and Phrases
Dual Active Bridge converter; Model Reference Adaptive Control; Robust Adaptive Control
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 Jan 2022