Today’s Plant Engineers are finding a Power Quality (PQ) problem, Harmonic Distortion of fundamental wave shape, that’s becoming increasingly apparent. The problem has arisen because of increasing use of Non Linear Load (NLL) like DC drives, Variable Speed AC drives, UPS, electronic controls etc.
Harmonics are as old a phenomenon as the introduction of AC System. Mercury Arc Rectifiers (MAR) developed in 1920’s and Semiconductor Controlled Rectifiers (SCR) or Thyristors developed in 1950’s created harmonics, due to their nature of non-linear-loads. However, use of non-linear-load was less then (typically less than 5% in 1960), to have any significant impact. But it is now increasing rapidly thus making Power Quality a great concern among plant engineers and their equipment manufacturers. This case study represents problems faced by a Tyre industry due to harmonics generation from HT Ban burry drive. The Tyre manufacturing facility conducted a comprehensive power quality audit, identified source of harmonics and mitigated harmonics by installing harmonic filter. The case study also represents benefits gained by the manufacturing facility by mitigating harmonics. The case study has comprehensive analysis & Data emerging out from this Power Quality, harmonic and trouble-shooting audit of the BIAS Tyre Manufacturing Factory.