On the Definition of Power-factor and Apparent Power in Unbalanced Polyphase Circuits with Sinusoidal Voltage and Currents
Document Type
Article
Publication Date
7-1993
Publication Title
IEEE Transactions on Power Delivery
Volume
8
First page number:
841
Last page number:
852
Abstract
Definition for the apparent power S and for the power factor PF in unbalanced polyphase circuits with sinusoidal waveforms are presented. It is proved that the definition S/sup 2/=(V/sub a//sup 2/+V/sub b//sup 2/+V/sub c//sup 2/) (I/sub a//sup 2/+I/sub b//sup 2/+I/sub c//sup 2/) has a definite physical meaning, leading itself to a convenient resolution in positive, negative and zero sequence, nonactive and active power. It is suggested that the power factor be represented with the help of the ratio P/sup +//S, where P/sup +/ is the positive sequence active powers.<>
Keywords
Electric currents; Alternating—Polyphase; Electric power factor; Electric power systems
Disciplines
Civil and Environmental Engineering | Controls and Control Theory | Electrical and Electronics | Environmental Engineering | Power and Energy
Language
English
Permissions
Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.
Repository Citation
Emanuel, A. E.,
Filipski, P. S.,
Zabar, Z.,
Baghzouz, Y.,
Makram, E. B.,
Varadan, S.,
Raju, N. R.,
Venkata, S. S.
(1993).
On the Definition of Power-factor and Apparent Power in Unbalanced Polyphase Circuits with Sinusoidal Voltage and Currents.
IEEE Transactions on Power Delivery, 8
841-852.