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Half-cycle Sampled Discrete Model of Series-Parallel Resonant Converter with Optimized Modulation
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| Author(s) |
JUNBING TAO, Zhiyu CAO, Norbert FRÖHLEKE, Joachim BOECKER |
| Abstract |
Because of low switching losses and wide operation range, series-parallel resonant converter with optimized modulation is attractive. There are three major modeling methods for resonant converters, including approximation method, extended describing function method, and sampled-data method. Approximation method and extended describing function method are simple but relatively inaccurate on heavy load conditions. Sampled-data method requires many computation resources which limits the utilization in control algorithm. A low computational cost and relatively accurate model, half-cycle sampled discrete model is proposed in this contribution. The model describes the behavior of converters with slow-varying variable and assumes variables constant in every half cycle. The model is verified by circuit simulation and experiments. |
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| Filename: | 0127-epe2014-full-17581050.pdf |
| Filesize: | 597.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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