It is shown that the common series resonant power converter is subject to a low frequency oscillation that can lead to the loss of cyclic stability. This oscillation is caused by a low frequency resonant circuit formed by the normal L and C components in series with the magnetizing inductance of the output transformer. Three methods for eliminating this oscillation are presented and analyzed. One of these methods requires a change in the circuit topology during the resonance cycle. This requires a new set of steady state equations which are derived and presented in a normalized form. Experimental results are included which demonstrate the nature of the low frequency oscillation before cyclic stability is lost.
Transformer induced instability of the series resonant converter
1983-05-01
Miscellaneous
No indication
English
Analysis of series-parallel resonant converter
IEEE | 1993
|Analysis of Series-Parallel Resonant Converter
Online Contents | 1993
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