Results 41 to 50 of about 15,797 (201)
, 2018 This thesis deals with design of a THD analyzer for audio frequency. In the interduction, there is a description of methods of THD calculation and realization of THD analyzer.
Ha, Tuan
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High Voltage, EarlyView.ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley +1 more source
Deutschland 1945-1949 Ringvorlesung an der THD im Sommersemester 1985
, 1989 TIB Hannover: RN 6167(49) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische ...
Schumann, H.G. (ed.) +2 more
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Renormalization techniques for inflation systems and some of their applications
Acta Crystallographica Section A, EarlyView.In this work, renormalization methods for quantities related to the diffraction of inflation systems are surveyed.Exact renormalization techniques are important and powerful, particularly for inflation‐generated systems. We review recent results in this direction.
Michael Baake +4 more
wiley +1 more source
Transanal haemorrhoidal dearterialization (THD) for selected fourth-degree haemorrhoids
, 2011 Traditional treatment of fourth-degree haemorrhoidal disease (HD) is conventional haemorrhoidectomy and is frequently associated with significant pain and morbidity.
F. Litta +8 more
core +1 more source
Intermodulation noise realted to THD in dynamic nonlinear wideband amplifiers [PDF]
, 1998 In this work it is shown that the power of the intermodulation noise of a wide-band amplifier with dynamic nonlinearities can be estimated by the total harmonic distortion (THD) with a sinusoid input signal of appropriate amplitude and frequency. The THD
Mattisson, Sven, Sjöland, Henrik
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Evidence of a local BCC‐type coordination of cobalt in FCC taenite of iron meteorites
Meteoritics &Planetary Science, EarlyView.Abstract Ni, Co, and Fe K‐edge X‐ray absorption fine structure (XAFS) measurements were performed, revealing an unexpected local structure around Co in well‐known iron and stony‐iron meteorites. Cobalt is enriched in kamacite but remains in taenite at concentrations of at least 0.3 atom%.
Kanako Yoshihara +5 more
wiley +1 more source
Thd Analysis Of Lfac Transmission System
, 2015 This paper deals with the design of filters and THD analysis of a low - frequency ac (20Hz) transmission system. The LFAC system is interfaced with the 50Hz main power grid with a cycloconverter. The wind power is collected in dc form,and is connected to the L FAC transmission line with a twelve pulse inverter.
Yogesh G. Bhujbal,, Dr. Asha Gaikwad
openaire +1 more source
Best THD of multilevel DC/AC inverters
, 2012 Multilevel DC/AC inverters have various structures. They have many advantages. Unfortunately, most existing inverters have poor total harmonic distortion (THD) since each level switching angle is not carefully arranged.
Li, Ying.
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THD and efficiency study for PV grid-connected [PDF]
, 2012 Total harmonic distortion (THD) is a measurement of the harmonic distortion and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency.
Lafsah, Mat Daud
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