Overload detection shall be provided for the neutral conductor in a multi-phase circuit Where the cross-sectional area of the neutral conductor is less than that of the line conductors. The overcurrent detection for the neutral…
Power Electronics Converter Harmonics: Multipulse Methods for Clean Power Derek A. Paice Harmonics generating non-linear electrical equipment is here to stay. There will be more non-linear equipment to be installed to serve as solutions to…
The presence of harmonic current in a power system increases the current in the neutral conductor due to phase current imbalance (refer to Fig. 1b). To ascertain that the current-carrying capacity of the circuit is…
In this article, I have discussed the difference between a conventional transformer and a K-factor rated transformer. In modern day plants, Variable Speed Drives (VSD) are widely used. The project I am working with now…
When there are several non-linear loads of equal ratings in a power systems, the use of phase shifting transformers could help cancel harmonics. After harmonic filters, phase shifting transformers are one of the simplest solution…
Before the advent of computers, variable speed drives, soft starters and other non-linear loads, the only source of harmonics in power systems are industrial plants using arc-furnaces. These arc-furnaces require so much power that main…
