Some Idea on Energy Comsumption of Non-Linear Consumers

Miklós Horváth, József Borka

Hungarian Academy Sciences, Hungary        

Summary: The determination of energy consumption required by non-linear consumer results in numerous dilemmas. According to some conceptions the energy consumed by non-linear consumers ought to be calculated or measured by taking the favoured harmonic components only into considerations instead of the all harmonic content of voltage and current supplying the non-linear consumer. The paper shows how to change the value of energy calculated by the full harmonic content of the measured voltage and current, respectively, e.g. by the fundamental harmonic of voltage in the case of the most typical consumer, the two-wave connection rectifier with buffer condenser as non-linear load. It is especially interesting for practical arrangements where non-linear consumers resulting in similar network pollution and rectifier loads are connected parallel to the same line.