Development of Harmonics Measurement System for Energy-Saving Lamps-An Educational Platform

This paper presents an implementation of a measuring system for harmonic analysis of energy-saving lamps. The proposed system includes a hardware circuit design, the LabVIEW-based harmonic analysis algorithm, graphical user interface, and a database for measured data management. In the harmonic analysis, a frequency-domain interpolation method is firstly adopted to determine the system fundamental frequency. Then the fast Fourier transform (FFT) is used to analyze the measured waveforms produced by different lamps. The developed system is tested using different brands of modern energy-saving lighting devices and shows its effectiveness in analyzing the harmonics produced.