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Definition of Powers and Power Quality Factors at a Point of Common Coupling in Single-Phase Systems and Three-Phase Systems  

Kim, Hyosung (Dept. of Control Eng., Cheonan National Tech. College)
Frede Blaabjerg (Institute of energy Technology, Aalborg Univ.)
Jensen, Birgitte-Bak (Institute of energy Technology, Aalborg Univ.)
Publication Information
Journal of Power Electronics / v.2, no.1, 2002 , pp. 32-45 More about this Journal
Abstract
This paper proposes an unified definition of powers for various circuit conditions such as balanced/unbalanced, sinusoidal/non-sinusoidal, and linear/nonlinear, fur single-phase systems and three-phase systems. Conventional reactive power is more classified into an interactive power and an alternating power. These powers are defined both in the time domain and the frequency domain consistently, and agree well with the conservation law. Several important power quality factors are defined to measure and evaluate the power quality fur the various circuits in the single-phase and three-phase systems. Simulation results show the power quality factors can evaluate and classify the various circuit conditions clearly.
Keywords
Definition; Powers; Power Quality Factors; p-q-r transformation;
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