Optimal Switching Pattern Selection for AC-DC Matrix Converters

This paper presents a comprehensive method for optimizing switching patterns in AC- DC matrix converters to minimize output current ripple while accounting for switching losses. All feasible switching patterns with varying numbers of states and active duty cycle combinations are systematically evaluated. For each pattern, the duty cycle distribution is optimized automatically to reduce ripple. A trade-off analysis identifies patterns offering the most favorable balance between ripple and switching losses. An analytical optimization procedure is developed for one selected pattern to enable efficient real-time implementation. Experimental validation confirms the theoretical findings, demonstrating that appropriate pattern selection and optimization can significantly reduce the ripple of the output current without increasing the switching losses.