Design and Construction of Eight KVA Power Factor Correction Equipment

Abstract

A single–phase power factor correction equipment 8KVA power output range has been designed, constructed and tested on eight different electrical loads with the interest of providing cheaper imported alternative electrical power factor increase system for lowering cost of using electricity. The power factor correction equipment consists of DC charge control with low battery shutdown, SG3524 PWM Oscillator circuit with twenty IRFP 260 MOSFETs for no input mains AC test or use, a centre tapped and an autotransformer protected with transistors relay section. The correcting unit incorporates two 2.2µF, 400V ac capacitors with other components in series and parallel. The input ac and power factor corrected ac electrical power were tested alternatively with double pole double throw selecting switch and the results show that the constructed power factor system is eventually cheaper than the foreign manufactured PF equipment, the electrical power consumed by the applied loads are also lower than when power factors were not corrected.