2019 Volume 139 Issue 10 Pages 602-609
Home electric appliances with power electronics devices are increasing. In order to investigate influences due to harmonics currents, grasp of harmonics currents characteristics for appliances. In this study, tablet computers at charging and router using on low voltage distribution system were focused and harmonic currents characteristics were measured. Measured data were compared with limits for harmonic emissions calculated using methods in the standards of JIS C 61000-3-2 (Electromagnetic compatibility (EMC)-Part3-2: Limits). Subsequently, an average harmonic current characteristics profile (AVG profile) from seven types of tablets and routers was obtained. Furthermore, phase values suitable for the AVG profile was derived using a genetic algorithm.