Applications of a class of nonlinear filters to problems in power electronics

Abstract

A class of nonlinear filters with potential application in power electronics is considered. The class of filters is characterized by the inclusion of a sorting element in the signal path. The sorting operation allows these filters to suppress impulsive noise while preserving edges and monotonic sections of signals. They are generally simple to implement offline and should be included as an additional set of analysis tools for the power systems designer. Emphasis is placed on the median filter, since it is the most accessible filter of the class. A working knowledge of issues arising in design and implementation is developed.<>