Sinusoidal rectification for harmonic elimination-technology explained

The need for power systems to reduce the levels of network harmonic pollution is quite clear. Activity within the European Legislative bodies and other international organisations is causing an increasing awareness of the problems associated with power supply waveform distortion. One of the causes of this waveform distortion is conventional 6-pulse rectifying equipment found in the input stages of many types of electrical equipment. The author outlines an alternative technique for power conversion that draws a continuous sinusoidal current from the power network under all load conditions. The performance of production sinusoidal rectifying equipment is illustrated with waveforms derived from product type testing