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Overview on sources of harmonic distortion
IEE Colloquium on Sources and Effects of Harmonic Distortion in Power Systems, 1997Harmonics have been present in power systems since the very early stages of AC system development. The principal reason for this is that when the battle between AC and DC systems was resolved in favour of AC systems the one piece of equipment which fought a rearguard battle was the DC motor. It could be controlled in a manner which AC motors could not,
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Harmonic distortion in commercial establishments
IEE Colloquium on Sources and Effects of Harmonic Distortion in Power Systems, 1997Many commercial systems are private 400 V supplies. A large number of distorting loads have been connected at these sites with the result that the source current waveform may be distorted. Consequently, excessive harmonic voltages may be generated. Other commercial supplies may be connected to systems which contain excessive distortion. This problem is
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Harmonic distortion in electret microphones
Applied Acoustics, 1991Abstract Using the harmonic-balance method, an approximate solution for the differential equation describing the relationship between the output voltage of the electret microphone and its air-gap thickness is obtained. Closed form expressions are derived for the amplitudes and phases of the fundamental, second- and third-harmonic components of the ...
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Robust Implementation of Zero Harmonic Distortion Converter in Distorted Grids
2022 IEEE Industry Applications Society Annual Meeting (IAS), 2022Dener A. L. Brandão +3 more
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Second Harmonic Distortion in Horns
1994Figure 44 presents solutions to the following equation: $$ \% 2ndharmonic = 1.76 \sqrt {{{I_T}}} (f/{f_c}) \times {10^{{ - 2}}} $$ (44.1) where IT is the acoustic intensity at the horn throat in watts per square meter, fc is the nominal cutoff frequency of the horn, and f is the driving frequency.
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Harmonic Distortion Perception Threshold
2007One of the quality factors of almost every professional audio instrument is the total harmonic distortion (THD) factor. In view of attempts to reduce it to the smallest possible values, a question comes up: what is the real human threshold of perceiving harmonic distortion?
Furdek, Marija +3 more
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REDUCING HARMONIC DISTORTION BY DITHERING
2021LONG BENJAMIN JOHN OLIVER, KAPPUS BRIAN
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