Proceedings ArticleDOI
The instantaneous power theory on the rotating p-q-r reference frames
Hyosung Kim,Hirofumi Akagi +1 more
- Vol. 1, pp 422-427
TLDR
In this paper, the authors proposed the rotating p-q-r reference frames where one instantaneous active power p, and two instantaneous reactive powers q/sub q/q/r were defined in 3-phase 4-wire systems.Abstract:
This paper proposed the rotating p-q-r reference frames where one instantaneous active power p, and two instantaneous reactive powers q/sub q/, q/sub r/ were defined in 3-phase 4-wire systems. The three power components are linearly independent, so that compensating for the two instantaneous reactive powers leads to control the two components of the current space vector independently. With the theory, this paper shows that the neutral current of a 3-phase 4-wire system can be eliminated by only compensating for the instantaneous reactive power using no energy storage element. Simulation results verify the theory very well.read more
Citations
More filters
Journal ArticleDOI
Instantaneous power compensation in three-phase systems by using p-q-r theory
TL;DR: The p-q-r theory as discussed by the authors provides two degrees of freedom to control the system currents by only compensating the instantaneous imaginary power without using any energy storage element, and the definition of powers maintains power conservation, and agrees well with the general understanding of power.
Active filters with control based on the p-q theory
TL;DR: In this paper, active filters have been used as a solution to solve harmonic current problems, but they present several disadvantages, namely: they only filter the frequencies they were previously tuned for; their operation cannot be limited to a certain load; resonances can occur because of the interaction between the passive filters and other loads, with unpredictable results.
Journal ArticleDOI
A Single-Phase DG Generation Unit With Shunt Active Power Filter Capability by Adaptive Neural Filtering
TL;DR: This paper deals with a single-phase distributed generation (DG) system with active power filtering (APF) capability, devised for utility current harmonic compensation, to integrate the DG unit functions with the shunt APF capabilities, since the DG is connected in parallel to the grid.
Posted Content
A survey on modeling of microgrids - from fundamental physics to phasors and voltage sources
Johannes Schiffer,Daniele Zonetti,Romeo Ortega,Aleksandar M. Stankovic,Tevfik Sezi,Jörg Raisch +5 more
TL;DR: In this paper, the authors present detailed dynamical models of the main microgrid components, starting from fundamental physics, and state the underlying assumptions which lead to the standard reduced model with inverters represented by controllable voltage sources, as well as static network and load representations, hence, providing a complete modular model derivation of a three-phase inverter-based microgrid.
Proceedings ArticleDOI
Evaluation of harmonic detection methods for active power filter applications
TL;DR: In this paper, the authors present a survey of the common used active power filter theories and compare their performance with respect to their performance in terms of current/voltage reference generation methods.
References
More filters
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
Generalized instantaneous reactive power theory for three-phase power systems
Fang Zheng Peng,Jih-Sheng Lai +1 more
TL;DR: 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.
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.
Proceedings ArticleDOI
Analysis and design of a new active power filter to cancel neutral current harmonics in three phase four wire electric distribution systems
TL;DR: In this article, an active power filter for cancelling harmonic currents in the neutral of a three-phase four-wire system is proposed, which employs a star/delta transformer along with a two-switch PWM (pulsewidth-modulated) controlled active filter.
Journal ArticleDOI
Power electronics' polluting effects
TL;DR: In this paper, the authors describe how an insidious side effect of any solution involving power electronics converters is their generation of high-frequency pollution-namely, conducted and radiated noise in the 100 kHz to 100 MHz range, which can have an adverse effect on the operation of surrounding electronic equipment.
Related Papers (5)
Generalized instantaneous reactive power theory for three-phase power systems
Fang Zheng Peng,Jih-Sheng Lai +1 more