Generation and propagation of EMI waves in power electronic circuits

The ever increasing operating frequencies of power converters, and the resulting compactness in their layouts, has led to EMI problems of a magnitude never seen before. This paper presents the mathematical theory behind the EM wave propagation in power electronic circuits which forms the basis of EMI problems in these circuits. A better understanding of the underlying theory leads to better preventive methods. Various sections of a given circuit can be modeled as antennas and represented mathematically. Results of this investigation are presented. A general algorithm is also included to determine the EMI. Key theoretical results are experimentally verified.