Circuits with Semi-Periodic Currents: Main Features and Power Properties

摘要

the active, reactive, scattered and unbalanced currents and powers, the RMS value and harmonic components are defined only for periodic quantities. Unfortunately, non-periodic variation of load parameters or their peri- odic variation but with a frequency different than the frequency of the voltage produced by power generators, causes non-periodic currents. Such non-periodic currents, however, are often much lowr than periodic compon- ents and consequently, the entire current can be considered as semi-periodic.