Demand of electrical energy is increasing day by day and power quality is one of the buzzword nowadays in Myanmar. Customer awareness of power quality, elecctronics load sensitivity and automation of industrials are pushing hard to improve power quality as never before. Power factor improvement is one of the common ways to improve the quality of power in effective way. Researching power factor controller enhance the deployment of voltage sensing technique with potential transformer, current sensing technique with current transformer, zero crossing detection of voltage and current signals, zener voltage regulation, PIC microcontroller based control system and relay driver system. Voltage and current were sensed by potential and current transformers to evaluate the deviation of voltage and current singals with zero crossing detection circuits respectively. Microcontroller is fed voltage and current singals to determine the quality of power system and implement the relays to keep the power factor as high as possible by switching capacitors to improve power factor of the system.
potential transformer, current transformer, zero crossing detector, power factor controller
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