Title :
Three-phase power frequency conversion with high efficiency and high spectral purity
Author_Institution :
University of Bradford, Schools of Electrical & Electronic Engineering, Bradford, UK
Abstract :
It is shown that a pulse-width modulation circuit may be made to approach ideal product-modulator behaviour at low frequencies. The output of such a modulator contains sum and difference-frequency components: it is shown that the sum-frequency components may be made to cancel each other out completely in a 3-phase system.
Keywords :
modulators; power convertors; pulse width modulation; 3-phase system; PWM; difference-frequency components; efficiency; frequency conversion; product-modulator behaviour; pulse-width modulation circuit; spectral purity; sum-frequency components;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840695
