| Abstract |
In this paper, a novel analytical
reduced-order sampled-data model for the series
parallel resonant converter under self-sustained
oscillation control (SOC) is proposed. The
proposed model is based on Extended
Describing Function (EDF) technique to derive
the steady state characteristics, which allows
converter design optimization. Then, simple low
order small-signal and large-signal models are
derived. The model accounts for effects of realtime
element value uncertainty. Also, a
conventional variable frequency controller is
presented for performance comparison. Finally,
the proposed dynamic model is verified by online
experimental results. The findings match
the outcomes of a detailed numerical solution,
simulation results of the converter to prove the dynamic model validity. |
