اثر التوافقيات الناجمة عن اجهزة تنظيم السرعة (ASD) على مكثفات تعويض الاستطاعة الردية

This paper aims to show the mutual effect between reactive power copensation capacitors in industrial plants that contain harmonic generators especially Adjustable Speed Drives (ASD) for AC and DC motors. Experiments are done in electrical power electronics laboratory- Tishreen University. It is known that three phase six pulse converters – witch are most used in industrial applications generate odd harmonics such as 5,7,11,13,… upon The formula h=np±1 where n is an integer number. First experiment shows the usual form for the distorted current and voltage wave. Following experiments show actual increased distortion and small variation on voltage waveform. We also did some measurements in Lattakia textile factory .where most loads fed by ASD