A unified approach for the steady-state analysis of resonant converters

A generalized approach for the steady-state analysis of resonant converters is presented. Different resonant converter tank circuit configurations are combined into a single tank circuit referred to as a generalized tank circuit. The load presented to this tank circuit is represented by an AC equivalent resistance, and simple complex circuit analysis is used to analyze such a generalized tank circuit. This type of unified approach simplifies the method of analysis for different configurations and eliminates the need for analysis of different schemes separately. In addition, in a computer program, the results for a particular scheme can be obtained by opening or shorting the nonrequired tank circuit components of the generalized scheme. The effect of high-frequency transformers and other parasitics can be taken into account in the analysis. A design example is presented to illustrate the method of designing a converter, and experimental results are presented to verify the analysis. >

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