Journal ArticleDOI
Generalized instantaneous reactive power theory for three-phase power systems
Fang Zheng Peng,Jih-Sheng Lai +1 more
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TLDR
In this paper, a generalized theory of instantaneous reactive power for three-phase power systems is proposed, which is valid for sinusoidal or nonsinusoidal, balanced or unbalanced, three phase power systems with or without zero-sequence currents and/or voltages.Abstract:
A generalized theory of instantaneous reactive power for three-phase power systems is proposed in this paper. This theory gives a generalized definition of instantaneous reactive power, which is valid for sinusoidal or nonsinusoidal, balanced or unbalanced, three-phase power systems with or without zero-sequence currents and/or voltages. The properties and physical meanings of the newly defined instantaneous reactive power are discussed in detail. A three-phase harmonic distorted power system with zero-sequence components is then used as an example to show reactive power measurement and compensation using the proposed theory.read more
Citations
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A review of active filters for power quality improvement
TL;DR: This paper presents a comprehensive review of active filter configurations, control strategies, selection of components, other related economic and technical considerations, and their selection for specific applications.
Journal ArticleDOI
Harmonic and reactive power compensation based on the generalized instantaneous reactive power theory for three-phase four-wire systems
TL;DR: In this article, a generalized theory of instantaneous reactive power for three-phase power systems is proposed, which is valid for sinusoidal or nonsinusoidal and balanced or unbalanced systems with or without zero-sequence currents and/or voltages.
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Detection is key - Harmonic detection methods for active power filter applications
TL;DR: In this article, a survey of the commonly used methods for harmonic detection in active power filters (APFs) is presented, and a simulation setup that decouples the harmonic detection method from the active filter model and its controllers is proposed.
Journal ArticleDOI
A new approach to load balancing and power factor correction in power distribution system
Arindam Ghosh,Avinash Joshi +1 more
TL;DR: In this paper, a new approach for generating reference currents for an active filter and/or a static compensator is presented, where the compensators are connected to a load that may either be connected in star or in delta.
Journal ArticleDOI
Instantaneous Reactive Power Theory Applied to Active Power Filter Compensation: Different Approaches, Assessment, and Experimental Results
TL;DR: The final analysis shows that, in general, the five theories present a different behavior, which depends on supply voltage, with respect to distortion, however, all of them widely decrease the waveform distortion.
References
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Journal ArticleDOI
Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components
TL;DR: In this paper, a new instantaneous reactive power compensator comprising switching devices is proposed, which requires practically no energy storage components, and is based on the instantaneous value concept for arbitrary voltage and current waveforms.
Journal ArticleDOI
Orthogonal decomposition of the currents in a 3-phase nonlinear asymmetrical circuit with a nonsinusoidal voltage source
TL;DR: The concept of orthogonal decomposition of the current in a nonlinear single-phase circuit, with a sinusoidal voltage source, into active, scattered, reactive, and generated components is extended to three-phase asymmetrical circuits in this article.
Journal ArticleDOI
A new interpretation of the Akagi-Nabae power components for nonsinusoidal three-phase situations
TL;DR: In this article, a different interpretation of the power decomposition proposed by H. Akagi et al. for distorted three-phase situations is given, which makes it possible to generalize the technique to single-phase systems and polyphase systems, also to include rigorously zero sequence currents and voltages.
Journal ArticleDOI
A new approach to the definition of power components in three-phase systems under nonsinusoidal conditions
Abstract: A method has been proposed for the definition of active and nonactive power components in three-phase systems under nonsinusoidal conditions. The method is more attractive than others since it is not a mere extension of methods employed in single-phase systems, but comes from the application of a quite powerful and synthetic mathematical tool specifically studied for the representation of three-wire three-phase systems in any possible condition: the Park transformation and the Park vectors. It is proven that the application of this method leads to the definition of two quantities, the real and the imaginary power, that are measurable in a quite simpler way than those proposed by other theories. The two satisfy all properties typical of the electrical power and are directly related, under sinusoidal and balanced conditions, to the active and reactive powers. It is shown how this method fits with other proposed methods that can be regarded in terms of this more general theory. >
Journal ArticleDOI
A new definition of instantaneous active-reactive current and power based on instantaneous space vectors on polar coordinates in three-phase circuits
TL;DR: In this article, the instantaneous active-reactive power and current on /spl alpha/-/spl beta/ orthogonal coordinates have been defined by the so-called p-q theory.