Osama Abdelmonem Mohamed Said Ahmed <br/><br/>
Power quality improvement for the electrical network feeding the underground transportation system in the greater Cairo Area /  
 تحسين جودة شبكة الكهرباء المغذية لمترو الانفاق بالقاهرة الكبرى 
Osama Abdelmonem Mohamed Said Ahmed ; Supervised Ahmed Alaa Taha Elkousy 
 - Cairo :   Osama Abdelmonem Mohamed Said Ahmed ,   2011 
 - 144 P. :   plans ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines 
<br/><br/> In Cairo METRO system electrical power supply, diode rectifiers are commonly used in the front end of a power converter as an interface with the electric utility. Rectifiers generate harmonic currents into the ac power source. The non-sinusoidal shape of the input current drawn by the rectifiers causes a number of problems in the power distribution network 
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<br/><br/><label>Subjects--Index Terms: </label>Harmonics Multi-pulse converter Power quality improvement