Results 1 to 10 of about 251,871 (367)
, 2006 Current and voltage waveforms of a distribution or a transmission system are not pure sinusoids. There are distortions in these waveforms that consist of a combination of the fundamental frequency, harmonics and high frequency transients.
Zamanan, N. +2 more
core
Even-odd harmonics generated from above-threshold ionization
, 2014 We are reporting a theoretical prediction: The photoelectrons forming above-threshold-ionization (ATI) peaks emit both even and odd harmonics. These harmonics exhibit plateau and cut-off features similar to those odd-only harmonics observed in ATI ...
Sun ZW(孙祉伟) +7 more
core +1 more source
Evaluation of coated QCM for the detection of atmospheric ozone [PDF]
, 2011 A coated acoustic wave sensor has been developed to selectively detect atmospheric ozone. The selective detection has been assessed using a variety of coatings: beeswax, gallic acid, indigo carmine, polybutadiene, potassium iodide and sodium nitrite ...
Muller, JBA +11 more
core +1 more source
Optimization of passive filtering systems used for mitigating harmonics in distribution networks
, 2016 Many optimization techniques have been applied not just to reduce the effects of minor harmonics on resonant harmonic filters (RHF) but also to minimize the investment cost or to maximize the efficiency of RHF.
Perez Alvarez, Juan J. [UNESP] +5 more
core +2 more sources
Active Power Filters Under Marketing Aspect [PDF]
Journal of Electrical and Electronics Engineering, 2013 This paper presents some active power filters and their solutions with equipment based on power electronics. A short marketing study concerning the shunt, hybrid and series active power filters isdescribed showing their main schemes, and principles of ...
SILAGHI Helga +3 more
doaj
Genetic and combinatorial algorithms for optimal sizing and placement of active power filters
International Journal of Applied Mathematics and Computer Science, 2015 The paper deals with cost effective compensator placement and sizing. It becomes one of the most important problems in contemporary electrical networks, in which voltage and current waveform distortions increase year-by-year reaching or even exceeding ...
Maciążek Marcin +2 more
doaj +1 more source
Predictive Adaptive Filter for Reducing Total Harmonics Distortion in PV Systems
Energies, 2020 This paper presents a new method for reducing the total harmonic distortion (THD) of photovoltaic (PV) systems by using an adaptive filter based on a predictive model.
Liqaa Alhafadhi +3 more
doaj +1 more source
HARMONICS ANALYSIS OF A WIND ENERGY CONVERSION SYSTEM WITH A PERMANENT MAGNET SYNCHRONOUS GENERATOR
, 2015 Global energy demands are growing daily, with renewable energy options such as wind power emerging as attractive alternatives to fossil fuels. This thesis is mainly doing simulation using Matlab to filter harmonics which are found in a Permanent Magnet ...
Nasr, Abdulhakim
core
P-class phasor measurement unit algorithms using adaptive filtering to enhance accuracy at off-nominal frequencies [PDF]
, 2011 While the present standard C.37.118-2005 for Phasor Measurement Units (PMUs) requires testing only at steady-state conditions, proposed new versions of the standard require much more stringent testing, involving frequency ramps and off-nominal frequency ...
Roscoe, Andrew +5 more
core +1 more source
Power Quality Services Provided by Virtually Synchronous FACTS
Energies, 2019 The variable and unpredictable behavior of renewable energies impacts the performance of power systems negatively, threatening their stability and hindering their efficient operation.
Andres Tarraso +3 more
doaj +1 more source