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Many of home appliances equipped by inverter technology because of its benefit of smaller, better of performance, more efficient and save energy. However this technology also generates current distortion regarding to its frequency switching which eventually has an influence on decreasing of power quality. Since the frequency switching of inverter normally in the range of 2 – 150 kHz, that cause the distortions in similar frequency range. Voltage and current distortions in the frequency range of 2-150 kHz is currently subject in research and standardization work. The reasons are that the appliances potentially generating such distortions are increasingly used and that the regulation and standardization are not completely covering and defining the limits and methods for that distortion. This study investigates the characteristics of current distortion generated by some home appliances in the frequency range of 2-150 kHz. The study is important to analyze the current distortion generated by the load particularly when the voltage supply is distorted due to the decreasing of power quality. The appliances under test are Compact Fluorescent Lamp, LED lamp and Battery Charger. The voltage distortions input were set at 1 Volt for the frequency range of 5 to 70 kHz. The results show current distortion characteristics and impedance properties of all devices under test for each specific frequency distortion. There are unique characteristics of distortion depending on frequency.

Current Distortion Characteristics of Some Home Appliances in Distorted Voltage Environment for Frequency Range of 2-150 KHz