Modeling and Control Optimization of a Three-Port Resonant Converter Using Space Mapping Optimization

The number of control variables in power electronics converters are increasing with new research on hybrid control techniques. As a result, there are several control points the converter can operate at for a given operating point. The designer has to find the optimum control point to run the converter. Similarly, the three-port resonant converter (TPRC) with phase shift and duty ratio control has an admissible range for control variables at every operating point. Therefore, the optimum control point that yields the best efficiency needs to be identified. Modeling the converter losses based on its mathematical model results in low accuracy and simulation models with long computation time. This paper proposes the use of the Space Mapping technique to develop an accurate converter model for control optimization of TPRC. The same methodology can be applied to other power electronics converters.