Abstract
This paper presents the implementation and performance testing of the wavelet modulation technique for three phase, 6-pulse, voltage source ac-dc converters. The wavelet modulation technique is based on utilizing sets of scale-based linearly-combined wavelet scaling and synthesis basis functions in order to construct a non-dyadic type multiresolution analysis (MRA). The analysis part of the constructed MRA creates three sets of groups of non-uniform recurrent samples from a reference dc signal. The synthesis part of the constructed MRA generates switching signals for operating the three phase ac-dc converter to synthesize the reference dc signal on its output side. The wavelet modulation technique is implemented for performance testing, when operating three phase ac-dc converters. Test results show that the wavelet modulation technique is capable of operating three-phase, 6-pulse, voltage source ac-dc converters to produce outputs with high dc components and reduced harmonic contents, while maintaining close-to-sinusoidal input currents at a nearunity power factor.
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