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An Alternative Approach for THD Assessment
2020 International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE), 2020In a grid, electrical installations operate under strict conditions to power quality, such as low harmonic emission, a balanced three-phase voltage, stable frequency, and a voltage level at consumer buses. Harmonic emission, mostly caused by non-linear loads, may lead to different well-known negative effects.
Mikhail A. Ivanchenko, Dmitry V. Dvorkin
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Inorganic chemistry, 2001
Complexes [Mg(thd)2(A)] (Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione; A = ethylenediamine, en (2); N,N'-dimethylethylenediamine, dmeda (3); N,N'-diethylethylenediamine, deeda (4); N,N,N',N'-tetramethylethylenediamine, tmeda (5); diethylenetriamine, dien (6); triethylenetetra-amine, trien (7); 1,2-ethanediol (8)) and [Mg(thd)2(EtOH)]2(1,3-propanediol ...
T, Hatanpää +3 more
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Complexes [Mg(thd)2(A)] (Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione; A = ethylenediamine, en (2); N,N'-dimethylethylenediamine, dmeda (3); N,N'-diethylethylenediamine, deeda (4); N,N,N',N'-tetramethylethylenediamine, tmeda (5); diethylenetriamine, dien (6); triethylenetetra-amine, trien (7); 1,2-ethanediol (8)) and [Mg(thd)2(EtOH)]2(1,3-propanediol ...
T, Hatanpää +3 more
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Low THD variable load buck PFC converter
2008 IEEE Power Electronics Specialists Conference, 2008International standards impose several constraints concerning the electric power quality and require that the harmonic content of the line current of grid connected equipment is below assigned limits; for this reason operating of ac-dc converters with high power factor and low line current distortion has become essential.
SOLERO, LUCA +3 more
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Intermolecular energy transfer between Tb(thd)3 and Eu(thd)3 complexes in solution
Journal of the Chemical Society, Faraday Transactions 2, 1977Intermolecular energy transfer between Tb(thd)3 and Eu(thd)3 chelates (thd = 2,2,6,6-tetra-methyl-3,5-heptanedione) in a variety of solvents at room temperature is studied by both emission life-time and steady-state emission intensity techniques. Thirteen different solvents were examined, ranging from strongly coordinating dimethylsulphoxide (dmso) and
Harry G. Brittain +1 more
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Inorganica Chimica Acta, 1993
Abstract Y(thd)3(H2O) (I) has been prepared from yttrium nitrate via the aqueous method; its drying yielded Y(thd)3 (III). The sublimation of compound II, resulting from the reaction of yttrium isopropoxide with thdH, also yielded Y(thd)3. Compounds II and IlI have been characterized by elemental analysis, IR, 1H 13C{1H} and 89Y NMR spectroscopies ...
A. Gleizes +5 more
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Abstract Y(thd)3(H2O) (I) has been prepared from yttrium nitrate via the aqueous method; its drying yielded Y(thd)3 (III). The sublimation of compound II, resulting from the reaction of yttrium isopropoxide with thdH, also yielded Y(thd)3. Compounds II and IlI have been characterized by elemental analysis, IR, 1H 13C{1H} and 89Y NMR spectroscopies ...
A. Gleizes +5 more
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Vapour pressure and heat capacities of metal organic precursors, Y(thd)3 and Zr(thd)4
Journal of Crystal Growth, 2004Abstract The vapour pressure of two metal organic precursors, Y(thd) 3 [CAS RN: 15632-39-0] and Zr(thd) 4 [CAS RN: 18865-74-2] (thd=2,2,6,6-tetramethylheptane-3,5-dionate), used for metal organic chemical vapour deposition of high-temperature superconductor layers, was measured by a static method in the technologically important temperature range ...
Michal Fulem +5 more
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Calibration of the thd functions of electrical standards
2008 Conference on Precision Electromagnetic Measurements Digest, 2008The paper describes a test procedure, the test waveforms, and the reference equipment used to calibrate the voltage and current total harmonic distortion (THD) measuring functions of multi-function electrical standards. It also shows that it is possible to establish traceability to the SI units for the THD measurements by measuring the voltage and ...
Arseneau, R., Frigault, M., Zelle, J. J.
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The THD Characteristics of the Phase detector
IEEE Transactions on Consumer Electronics, 1986The paper presents an evaluation of the THD characteristics of the synmetrical and simple phase detectors, using exponential models of the detectors. By developing the output expressions into a series with Bessel-function coefficients, it is shown that, under certain conditions, the convergence is obtained.
Zorana Popovic, Aleksander Markovic
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Polyhedron, 1994
Abstract The reaction between the barium derivative resulting from barium chips and 1-dimethylamino-2-propanol and 2,2,6,6-tetramethyl-3,5-heptanedione (thdH) in a 1 : 1 stoichiometry produced the β-diketonatoalkoxide derivative 2 or [Ba(thd)2(OHCH MeCH2NMe2)]2 3, depending on the solvent, THF or hexane.
L.G. Hubert-Pfalzgraf +3 more
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Abstract The reaction between the barium derivative resulting from barium chips and 1-dimethylamino-2-propanol and 2,2,6,6-tetramethyl-3,5-heptanedione (thdH) in a 1 : 1 stoichiometry produced the β-diketonatoalkoxide derivative 2 or [Ba(thd)2(OHCH MeCH2NMe2)]2 3, depending on the solvent, THF or hexane.
L.G. Hubert-Pfalzgraf +3 more
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Islanding detection of wind farms by THD
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies, 2008One of the most main protection requirements of grid connected wind turbines (WTs) is islanding detection and anti-islanding protection. In this paper, a new method for islanding detection of WTs based on THD of asynchronous generator currents is proposed. The new features of the proposed method are its application for wind farms with a large number of
H. Kazemi Karegar, A. Shataee
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