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Impacts of Transformer Loading on the Harmonic Distortion Created by GIC Flows
IEEE transactions on industry applicationsGeomagnetically induced currents (GICs) are currents dominated by dc components that flow through grounding circuits into power systems. These currents are typically initiated by geomagnetic disturbances, and flow into power systems through power ...
S. A. Saleh +6 more
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Harmonic distortion and unbalance analysis in multi-inverter photovoltaic systems
International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2018The growing penetration of distributed generation connected to the grid by power electronics converters can adversely affect the power quality. The capability of the system to host large harmonic distortions and unbalance in three-phase systems may be an
F. Spertino +5 more
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Total Harmonic Distortion Decomposition Depending on Distortion Origin
IEEE Transactions on Power Delivery, 2005The total harmonic distortion (THD) ratio is a well-known parameter that characterizes the distortion degree at a specific point of the grid. In this paper, a decomposition of the THD will be presented in order to determine the responsibility of the distribution company and the electrical energy consumer for the harmonic distortion measured at the ...
A. Ortiz +5 more
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Harmonic Power Sharing With Voltage Distortion Compensation of Droop Controlled Islanded Microgrids
IEEE Transactions on Smart Grid, 2018Harmonics are found to have deleterious effects on power system equipment including transformers, capacitor banks, rotating machines, etc. However, the distributed generation interfacing converters (DICs) are able to improve power quality and system ...
H. Moussa +5 more
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World Pumps, 2009
ABB's Kari O Kovanen looks at methods used to reduce harmonic distortion produced by variable speed drives, including reactors, multi-pulse solutions and passive harmonic filters, and also refutes some of the criticisms of low harmonic drives made by some commentators.
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ABB's Kari O Kovanen looks at methods used to reduce harmonic distortion produced by variable speed drives, including reactors, multi-pulse solutions and passive harmonic filters, and also refutes some of the criticisms of low harmonic drives made by some commentators.
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New Harmonic-Distortion-Suppression Method
2011This section presents a method to improve the linearity of current steering (CS) digital-to-analog converters (DACs). The method uses unary functional segmentation to create redundant D/A functions, defined around nominally identical sub-DAC entities. Further, the method uses a digital pre-processor to create phase shifted replicas of the input signal ...
Radulov, Georgi +3 more
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Distortion: Total harmonic distortion in an asymmetrically clipped sinewave
IEEE Instrumentation & Measurement Magazine, 2011The application of a signal to an electronic system such as an amplifier invariably results in an output that is, in some sense and to some extent, a distorted version of that input signal. The application to which the system is put is a major determiner of whether or not the distortion can be neglected or, at least, of how much distortion can be ...
Stephen Dyer, Justin Dyer
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Harmonic distortion in SC sigma-delta modulators
IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1994The maximum achievable resolution in noise-shaping modulators is a function of three principal parameters: oversampling ratio, M; noise-shaping order, L; and quantizer resolution, N. For practical implementations, thermal noise in MOS switches and amplifiers, bandwidth and slew-rate in integrator circuits in switched-capacitor (SC) implementations, and
DIAS VF +2 more
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Total harmonic distortion analysis simulation
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409), 2002Using digital filters and MATLAB software to find out the harmonic components, the work is based on using Butterworth band pass filters with the corresponding cutoff frequency. In this paper, the authors use the idea of using digital filters to analyze and compute the frequencies of the harmonics.
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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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