core

Analytical Design of Passive LCL Filter for Three-phase Two-level Power Factor Correction Rectifiers

This paper has presented a comprehensive analytical method for designing LCL filter of a three-phase power factor correction rectifier (PFC). The method is explained by the converter current and the voltage behavior. The converter current ripple determines all the filter parameters and defines a suitable margin for them. A general …

Read More »

Enhancing Power Transformer Differential Protection to Improve Security and Dependability

The transformer percent differential protection is not reliable enough during external fault. if the differential restraint characteristic is the only one criteria providing security. The saturation of CTs during external faults could lead to cases of dangerously high differential restraint ratios crossing the characteristic into the operating region and causing …

Read More »