Results 161 to 170 of about 96,152 (211)

Harmonic filtering in power applications

Conference Record. Industrial and Commercial Power Systems Technical Conference, 2003
One suggested solution to line-current harmonics injected by rectifying power converters is the placement of series-resonant filters across the line supply feeders. For effective filtering, the filter impedance level must be comparable to the source impedance.
L.J. Giacoletto, G.L. Park
openaire   +1 more source

Allocation of power harmonic filters using Genetic Algorithm

2012 IEEE 15th International Conference on Harmonics and Quality of Power, 2012
In this paper it is confirmed that the placement of harmonic filters in power systems is not a trivial task. Although it seem obvious the allocation of filters in the buses with the biggest harmonic distortions and/or with the largest harmonic sources, it is going to be proven that these choices are not the best solution regard the network operation ...
Variz, A.M., Niquini, F.M.M, Pereira, J.L.R., Barbosa, P.G., Carneiro, S., Ribeiro, P.F.   +5 more
openaire   +2 more sources

Distributed Power Amplifier with electronic harmonic filtering

2009 IEEE Radio Frequency Integrated Circuits Symposium, 2009
Providing all band power amplification and harmonic rejection are objectives with orthogonal implementations. This paper is a review of a new Distributed Power Amplifier (DPA) architecture using programmable frequency dispersion. This frequency domain dispersion is designed to achieve electronic harmonic filtering within the intended frequency band ...
Bruce Thompson, Bob Stengel, Scott Olson, Nicholas Cafaro, David Scagnelli, Alvin Joseph, Jim Dunn   +6 more
openaire   +1 more source

Optimal Design for LC Power Harmonic Filters

International Journal of Power and Energy Systems, 2005
This study describes a novel method for designing LC-type (single-tuned) filters to reduce harmonic distortion. The proposed method minimizes the total cost of the filters, such that the harmonic distortion is within an acceptable range. The filter design problem is formulated as a combinatorial optimization problem with a nondifferentiable objective ...
Y.T. Hsiao, C.H. Chen, H.W. Cheng
openaire   +1 more source

Compact filtering power divider with harmonic suppression

Journal of Electromagnetic Waves and Applications, 2016
This paper presents a novel power divider with flltering responses. By using quarter- wavelength resonators with a novel feeding structure, both power division and bandpass responses are obtained, and compact size is realized. Discriminating coupling is utilized to suppress the third harmonic to obtain wide stopband. The isolation resistor is connected
Wan-Li Zhan, Xiao-Lan Zhao
openaire   +1 more source

Computer-aided design of power harmonic filters

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242), 2002
Power harmonic filters for rectifiers, motor drives and UPS are usually designed by characterizing currents and voltages by their harmonic components. Usually, no attempt is made to determine the effect of switching of the filters, or of the system operation during a fault in the filter. A superior design method is to use modeling tools to characterize
N.K. Medora, A. Kusko
openaire   +1 more source

Parallel operation of passive power filter and hybrid power filter for harmonic suppression

IEE Proceedings - Generation, Transmission and Distribution, 2001
Harmonic pollution has been serious in recent years. Passive filters have been used to suppress harmonic current conventionally. However, passive power filters have the problem of resonance. To solve the resonance problem, active power filters and hybrid power filters were developed.
H.-L. Jou, J.-C. Wu, K.-D. Wu
openaire   +1 more source

Absorptive Filters for Microwave Harmonic Power

Proceedings of the IRE, 1959
Utilizing the cutoff properties of certain lossy periodic waveguide structures, low reflection absorptive filters for harmonic power at microwave frequencies have been obtained. Various approaches to specific absorptive filters are discussed, and the experimental results presented demonstrate the validity of the concepts developed. Insertion loss of up
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Harmonic Intelligent Control with Active Power Filter

Proceedings of the 41st International Universities Power Engineering Conference, 2006
This paper presents the procedures required to determine the locations and sizes of multiple-Active Power Filters (APFs) to reduce harmonic distortion in a power system with harmonic sources. The objective function is to minimize the APFs injection currents while satisfying harmonic voltages, total harmonic voltage distortions within IEEE-519 ...
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A discrete frequency tuning active filter for power system harmonics

2008 IEEE Power Electronics Specialists Conference, 2008
Severe voltage distortion due to power system harmonic resonance has been reported in recent years. The termination installation active filter was presented to resolve this problem. It operates as similar conductance for all harmonic frequencies whether in a fixed conductance command or in an automatic gain adjustment control.
null Tzung-Lin Lee, null Jian-Cheng Li, null Po-Tai Cheng   +2 more
openaire   +1 more source