Deduction of Coordinate Transform for Instantaneous Reactive Power Theory

Abstract:

By means of building up a three-dimension coordinate system in vector space, the coordinate transform used in instantaneous reactive power theory (IRPT) proposed by H. Akagi is deduced and through spatial coordinate transform two equivalent three-dimension coordinate systems are obtained. After rigorous mathematical deduction the transformation factor for above-mentioned three-dimension coordinate systems is achieved, thus the coefficient deduction for IRPT is solved and the zero-sequence quantity expressing three-phase asymmetrical system is directly obtained. By use of the theory of rotating phasor, the basic principle of instantaneous spatial vector detection method based on IRPT is explained. The authors’ analysis is available for understanding and improvement of this harmonic current detection method.

• Periodical: Applied Mechanics and Materials (Volumes 641-642)
• Pages: 1219-1222
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.641-642.1219
• Online since: September 2014
• Authors: Xue Song Zhou, Da Yan Wang, You Jie Ma
• Keywords: Coordinate Transform Rotating Phasor, Harmonic Current Detection, Instantaneous Reactive Power Theory (IRPT)

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