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The estimation of interharmonics by group frequencies
2004 IEEE Region 10 Conference TENCON 2004., 2004In this paper, an innovative concept, group frequency (GF), is proposed to facilitate the analysis of power system interharmonics as well as conventional integer harmonics. The concept is applied in the analysis of load currents of integral cycle controllers (ICCs) and other controlled power applications.
null Yong-Nong Chang +3 more
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2001
Harmonics occur due to equipment with non-linear characteristics such as transformers and fluorescent lamps, and today are principally due to power electronics components such as rectifiers, triacs or thyristors. In this regard, particular attention should be paid to the use of rectifiers with capacitor smoothing which are used extensively in ...
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Harmonics occur due to equipment with non-linear characteristics such as transformers and fluorescent lamps, and today are principally due to power electronics components such as rectifiers, triacs or thyristors. In this regard, particular attention should be paid to the use of rectifiers with capacitor smoothing which are used extensively in ...
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Interharmonics in power systems
2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262), 2001IEC-61000-2-1 defines interharmonic as follows: between the harmonics of the power frequency voltage and current, further frequencies can be observed which are not an integer of the fundamental. They can appear as discrete frequencies or as a wideband spectrum.
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On the Effects of Unbalances, Harmonics and Interharmonics on PLL Systems
IEEE Transactions on Instrumentation and Measurement, 2013The effects of unbalances, harmonics, and interharmonics on PLL systems are analyzed. After a brief review of some typical schemes for three-phase and single-phase PLLs, an analytical assessment of the phase angle and frequency errors for PLLs in the presence of disturbances is performed to obtain simple analytical formulas.
Feola L +2 more
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Double stage harmonic and interharmonic processing technique
2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134), 2002Measurement and analysis experiences have shown great difficulties in interharmonic detection and measurement due to their small amplitudes and their consequent vulnerability from harmonics spectral leakage. A new approach that has a general validity and results fully compatible with the IEC standard is presented.
GALLO, Daniele +2 more
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Interharmonic analysis and mitigation in adjustable speed drives
IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014This paper presents the theoretical background and studies on the supply side current interharmonics in a double-stage Adjustable Speed Drive (ASD), when they are initiated by motor current imbalance. Some useful approaches are then proposed to compensate for these interharmonic currents in partially and/or fully controlled ASD, resulting in ...
Hamid Soltani +3 more
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Some considerations on interharmonic voltage limits and their assessment
2008 43rd International Universities Power Engineering Conference, 2008Some considerations on interharmonic voltages limits and their assessment are developed. Reference is made to recent activities in the standard review process and to research literature regarding this specific topic and related issues. Some recalls on the main interharmonic voltages effects are reported.
LANGELLA, Roberto, TESTA, Alfredo
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On the processing of harmonics and interharmonics in electrical power systems
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), 2002A recent IEC standard draft gives new definitions and methods for measurement and interpretation of results for harmonics and interharmonics, in particular introducing the concept of the harmonic and interharmonic groups. This paper analyses the spectral leakage problems due to a nonsynchronization of the analyzed waveforms with the window width ...
GALLO, Daniele +2 more
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Harmonic and interharmonic currents compensation in DC line
2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2014In this paper a strategy for the compensation of harmonic currents in DC bus has been proposed. By means of a multilevel converter, low amplitude harmonic currents due to the interaction between primary converters operating in different conditions and connected to the same DC bus, are compensated.
Fioretto M +4 more
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Damping torsional interharmonic effects of large drives
2009 IEEE 6th International Power Electronics and Motion Control Conference, 2009Current source thyristor converters are the most widespread technology for large drives and today still a suitable choice for supplying high power variable speed drives for pumps and compressors because of excellent reliability records.
Simon Schramm +3 more
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