Developing a Non-Dyadic MRAS for Switching DC-AC Inverters

This paper introduces a new non-dyadic multiresolution analysis-synthesis (MRAS) structure to generate switching signals for DC-AC inverters. We propose a new method for modifying the Haar scaling function to support a non-uniform recurrent sampling process. This modification is based on a linear combination of scale-based shifted Haar scaling functions. These modified scaling functions are capable of constructing a non-dyadic type MRAS. Synthesis scaling functions associated with the proposed sampling scaling functions are used to activate switching elements of a DC-AC inverter. The output of such an inverter is found to be an accurate approximation of the continuous-time sinusoidal reference signal