10.5281/zenodo.3925119
https://zenodo.org/records/3925119
oai:zenodo.org:3925119
Dahl, Nicolai J.
Nicolai J.
Dahl
Technical University of Denmark
Ammar, Ahmed M.
Ahmed M.
Ammar
Technical University of Denmark
Knott, Arnold
Arnold
Knott
Technical University of Denmark
Andersen, Michael A. E.
Michael A. E.
Andersen
Technical University of Denmark
An Improved Linear Model for High Frequency Class-DE Resonant Converter using the Generalized Averaging Modeling Technique
Zenodo
2019
Resonant converters
Modeling
PI control
State-space methods
DC-DC power converters
2019-10-02
10.1109/JESTPE.2019.2945182
10.5281/zenodo.3925118
https://zenodo.org/communities/ledlum-2020
https://zenodo.org/communities/eu
Creative Commons Attribution 4.0 International
As the operating frequency of power converters increases, the passive component values likewise decrease. This results in the effect of the parasitic components becoming more prominent, leading to significant modeling errors if not considered. For resonant converters this especially becomes a problem at high frequencies. This paper presents a reduced model for a class-DE series resonant converter based on generalized averaging that incorporates the relevant parasitics and uses multiple harmonics to obtain an accurate linear model. Comparison between the proposed model, prior art, and a prototype converter running at 1 MHz is conducted, and a PI-controller is designed based on each model and tested. The results show that the parasitics have a significant impact on the DC-gain and dynamics of the converter, and that the proposed model improves on the prior art by reducing the DC-gain error by more than 7 dB, and the error in the low frequency pole from 168 % to 16.9 %. Furthermore, the PI-controller designed on the prior art was found to have more than 40 times larger overshoot in the control signal when measured compared to the model prediction, while the controller based on the proposed model showed correct performance when simulated and measured.
European Commission
10.13039/501100000780
731466
TINY LIGHT ENGINE FOR LARGE SCALE LED LIGHTING