Results 221 to 230 of about 199,008 (263)

Investigation on Shunt Active Filter with P-Q Theory

2013 International Conference on Circuits, Power and Computing Technologies (ICCPCT), 2013
By using a bulky amount of non-linear loads, power electronic equipments, commercial and even residential electrical equipments are causing deterioration of the quality of the electric supply through distortion of supply voltage. This will lead to development of more stringent requirements regarding harmonic current generation, which are found in ...
Sudhakar kothuru, Naidu.K Appala, Y Suresh., J. Kotturu   +3 more
openaire   +1 more source

Single phase UPS with FACTS capabilities by using p-q Theory

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012
This paper proposes the use of an UPQC topology in a high efficiency single phase 1.4 kVA UPS system with active filter capabilities throughout the parallel and series converter. With this topology it is possible to obtain high efficiency and combine the advantages of both on-line and line interactive UPS systems and at the same time improving the grid
Dante Victor Shimoda Shimoda, Francisco Kleber de Araujo Lima, Carlos Gustavo C. Branco, René Pastor Torrico-Bascopé, Luiz Juarez Camuriça   +4 more
openaire   +1 more source

Instantaneous p-q power Theory for compensating nonsinusoidal systems

2008 International School on Nonsinusoidal Currents and Compensation, 2008
This paper presents a tutorial about compensation of nonsinusoidal systems based on the instantaneous active and reactive power theory or the p-q theory. The history related to this theory is presented and then the definitions of real, imaginary and zero-sequence powers are introduced.
E. H. Watanabe, H. Akagi, M. Aredes
openaire   +1 more source

p - q theory for active compensation applied to supergrids and microgrids

2012 Workshop on Engineering Applications, 2012
With the increase of high non - linear loads and the inclusion of Distributed Energy Resources (DER) in the utility grid, power quality improvement has become a fundamental requirement in electrical systems, in order to minimize the harmonic distortion effects.
C.A. Ordonez, A. Puentes, H.R. Chamorro, G. Ramos   +3 more
openaire   +1 more source

A single phase p-q theory based active filter

2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015
Active 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
openaire   +1 more source

Limitations of cross vector generalized p-q theory

2015 International School on Nonsinusoidal Currents and Compensation (ISNCC), 2015
This 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 ...
openaire   +1 more source

Series active power filter implementation using P-Q theory

2012 International Conference on Informatics, Electronics & Vision (ICIEV), 2012
This 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, Md. Ahsanul Abeed, Md. Khurram Monir Rabby, Md. Habibur Rahaman, Araf Hossain, Rifat Al Nur, Ashfanoor Kabir, Upal Mahbub   +7 more
openaire   +1 more source

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), 2016
The 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, Gyan Ranjan Biswal, Amit Kumar Roy   +2 more
openaire   +1 more source

Unfunctionality of the instantaneous p-q theory for the control of series active filters

2011 IEEE Electrical Power and Energy Conference, 2011
Proliferation 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
openaire   +1 more source

Harmonic Suppression Using the Improved p-q Theory in the Power System

2009 International Workshop on Intelligent Systems and Applications, 2009
According 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, Chongpeng Jiang, Xiaoying Zhang, Li Chai   +3 more
openaire   +1 more source