Dynamic oversampling ratio sigma-delta modulation for the control of switching power converter

The common algorithm used to control DC-AC switching power converters is Pulse Width Modulation. This work presents the use of Dynamic Oversamplig Ratio Sigma- Delta modulators for the control of the switches of DC-AC switching power converters. The proposed control algorithm presents the advantage of a reduction of conducted electromagnetic interferences with respect to Pulse Width Modulation. A prototype of a DC-AC switching power converter has been implemented.