Voltage and current distortion correlation characteristics of compact fluorescent lamp in frequency range of 2–150 kHz

Voltage and current distortions in the frequency range of 2-150 kHz are 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. As consequence some interference problems have already been reported and it can be foreseen that more EMC problems will occur. Since many appliances potentially generating distortions and devices potentially susceptible to these distortions have been developed without any EMC requirements in that frequency band the discussions on suitable compatibility levels in the standardization will become critical. This study investigates the characteristics of correlation between voltage and current distortion in the frequency range of 2-150 kHz for compact fluorescent lamp. The characteristics of correlation are important to analyze the current distortion generated by the load when specific voltage distortion is occurred. The level and frequency distortions of voltage input were set from 0-5 Volt and 2-65 kHz respectively. The Measurements of voltage and current were conducted in time domain and converted to frequency domain using Discrete Fourier Transform. The results show correlation characteristics and impedance properties for each specific frequency distortion. There are differences in the behavior depending on frequency.