Electromagnetic compatibility (EMC) - Part 1-7: General - Power factor in single-phase systems under non-sinusoidal conditions
Abstract
IEC TR 61000-1-7:2016(E) provides definitions of various electrical power quantities and the relationship between them under
non-sinusoidal conditions, in order to give clear information on both components in the power factor:
- the fundamental power factor, which is due to the phase difference between the voltage and current
at the fundamental frequency(cos ?1), and
- the non-fundamental power factor, which is related to the distortion of the voltage and/or current.
This Technical Report is applicable only to single-phase systems.
This Technical Report provides definitions for the three following cases:
- the general case where the voltage and current are both distorted (Clause 5),
-the case where the voltage is assumed to be sinusoidal and the current is only distorted with harmonic components
(Clause 6),
- the particular case where the voltage and current are both sinusoidal (Annex A).
Annex B gives information on the fundamental active factor, which is used to describe the behaviour of a piece of
equipment bas a load or a generator.
