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A single phase p-q theory based active filter
2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015Active filters (AFs) are used to compensate for harmonics and reactive component of the load current drawn by nonlinear loads. Reference signal extraction plays crucial role in the control scheme of AF. Recently a lot of attention has been given to single phase p-q theory as a method for reference current signal extraction for AF.
Kheeradhwaja Patro, Alok Kumar Pradhan
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Limitations of cross vector generalized p-q theory
2015 International School on Nonsinusoidal Currents and Compensation (ISNCC), 2015This paper investigates the limitations of Generalized Instantaneous Reactive Power p-q Theory introduced by Peng et al, which is referred to as the Cross Vector p-q Theory. The theory, which applies to four wire systems, is shown to contain mostly the same limitations as the original instantaneous reactive power theory, namely that the instantaneous ...
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Series active power filter implementation using P-Q theory
2012 International Conference on Informatics, Electronics & Vision (ICIEV), 2012This paper deals with the design and implementation of series active power filter for power quality improvement. The problem of harmonics due to non-linear loads can be reduced by series active power filter. P-Q theory is used as the control algorithm in the proposed series active power filter.
Arnob Islam +7 more
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Harmonic Suppression Using the Improved p-q Theory in the Power System
2009 International Workshop on Intelligent Systems and Applications, 2009According to the traditional p-q theory had many problems, the improved p-q method is studied in this paper. The distorted voltage is transformed to ideal voltage through the space vector. Harmonic suppression and reactive power compensation are finished under the distorted voltage by use of three-phase four-wire four-leg active filter.
Cunlu Dang +3 more
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Modeling and control of hybrid power filter using p-q theory
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2016The paper presents design of hybrid active power filter (HAPF) in a three-phase three-wire power system. Design is implemented with instantaneous reactive power theory for control of HAPF in order to mitigate harmonics generated by both non-linear and unbalanced load at the point of common coupling (PCC). The p-q Theory enables the source current to be
Asim Abdullah +2 more
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Unfunctionality of the instantaneous p-q theory for the control of series active filters
2011 IEEE Electrical Power and Energy Conference, 2011Proliferation of power electronics converters and electronic equipments has dramatically increased electric pollution in electrical distribution power systems. The distorted current draw by these nonlinear loads distorts the supply voltage which may then give rise to harmonic currents at distribution networks, even when at these locations no harmonic ...
Alireza Javadi, Kamal Al-Haddad
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The instantaneous power theory on the rotating p-q-r reference frames
Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475), 1999This 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 ...
null Hyosung Kim, H. Akagi
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Advanced Control of Cascaded Multilevel Drives Based on P-Q Theory
IEEE International Conference on Electric Machines and Drives, 2005., 2005In recent years, there has been significant development on the cascaded multilevel inverter wherein the series connection is accomplished by splitting the neutral point of the load and driving both ends with power converters. This splits the power between a "bulk" inverter supplying higher-voltage low-frequency power and a "conditioning" inverter ...
null Shuai Lu, K.A. Corzine, T.H. Fikse
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P-Q theory for shunt active filters using ramp comparator
2013 International Conference on Power, Energy and Control (ICPEC), 2013Here a P-Q algorithm for shunt active power filters under stiff and non stiff source is described. The conventional current reference algorithms suffer from the disadvantage that it is not possible for harmonic compensation when the supply is unbalanced.
D. Joseph, N. Kalaiarasi
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Comparisons Between the p--q and p--q--r Theories in Three-Phase Four-Wire Systems
IEEE Transactions on Power Electronics, 2009This paper presents a comparative analysis between results from applications of the p-q and the p-q-r theories in shunt active power filters for three-phase four-wire systems, discussing aspects related to the influence of the system voltage in the control methods that calculate the compensating currents. It is shown that in some cases, a preprocessing
M. Aredes +4 more
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