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In this paper a Random Pulse Width Modulation (RPWM) scheme for a dual inverter fed 3-level open-end winding induction motor based drive is presented. The proposed scheme is a variable switching frequency technique in which randomization is achieved by sampling the reference space vector at random intervals. Any reference space vector for the 3-level inverter is mapped into a vector of a basic 2-level...
A Pulse Density Modulation scheme based on Space Vector with Vector Quantization for four level inverter is proposed in this paper. The scheme disperses the power spectrum of the inverter output voltage as a wide-spectrum noise. The vector space of inverter reference space vector region is divided into voronoi regions to find out switching vectors. A new method is presented to code these voronoi regions...
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