Robust Adaptive Control of Dual Active Bridge DC-DC Converter with Constant Power Loading
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1
Ghana Communication Technology University, Accra, Ghana
2
Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
Power Electronics and Drives 2025;10 (45):60-73
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ABSTRACT
The standard model reference adaptive control (MRAC) application to the Dual Active Bridge (DAB) converter has proven to achieve
excellent dynamic and tracking responses under parametric uncertainty. However, it is sensitive to bounded non-parametric uncertainty
caused by measurement noise and ripples in the output voltage produced in the electronic device. When left unchecked, it affects the
system's performance and may lead to instability. This paper investigates two robust modifications to the standard MRAC, namely the
projection operator and dead zone techniques, to tackle the issue of the bounded noise to the dual active bridge with constant power
loading (CPL). It further develops an improved form of the dead zone-based MRAC, which ensures better transient and steady-state
output voltage when compared with the traditional dead-zone-based MRAC.