Non‐linear current‐mode control for boost power converters: a dynamic backstepping approach
Open Access
- 1 September 2017
- journal article
- research article
- Published by Institution of Engineering and Technology (IET) in IET Control Theory & Applications
- Vol. 11 (14), 2261-2269
- https://doi.org/10.1049/iet-cta.2016.1490
Abstract
A control scheme for boost power converters based on current-mode control is given. The proposed methodology relies on the design of two feedback loops. An outer loop for steady state error compensation using a proportional-integral action and a non-linear inner loop for current tracking. A dynamic backstepping controller with a well-defined region of attraction, ensuring asymptotic stability via a Lyapunov function, is achieved. The closed-loop system performance is evaluated through experimental results for a 130 W boost power converter with the controller implemented in a dSPACE platform, where precise regulation, tracking and robust behaviour with respect to large unknown load variations are proven successful.Keywords
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