Results 271 to 280 of about 1,503,489 (327)
Some of the next articles are maybe not open access.
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
semanticscholar +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
Harmonic injection method: a novel method for harmonic distortion analysis
ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002In this paper we propose a novel method for analysing harmonic components of the signals produced by nonlinear dynamical systems. The proposed method, unlike numerical analysis method, gives symbolic answers that allow us to interpret the operation of the analysed systems more insightfully. To demonstrate the accuracy and the flexibility of our method,
Jirayuth Mahattanakul +1 more
openaire +1 more source
Harmonic and interharmonic distortion modeling in multiconverter systems
IEEE Transactions on Power Delivery, 1995The problem of modeling multi-power converter systems in presence of harmonic and interharmonic distortion is considered. Specifically, current source rectifiers are considered as distortion sources, some supplying DC motors and the remaining supplying inverters feeding AC machines.
R. CARBONE +3 more
openaire +3 more sources
2001
Having run a harmonic study, bus harmonic voltages, line harmonic currents and voltage and current distortion factors are calculated and compared to limits set by standards. If the limits are exceeded, various filtering alternatives are simulated and examined to resolve resonance problems and bring the system into compliance with known standards.
openaire +1 more source
Having run a harmonic study, bus harmonic voltages, line harmonic currents and voltage and current distortion factors are calculated and compared to limits set by standards. If the limits are exceeded, various filtering alternatives are simulated and examined to resolve resonance problems and bring the system into compliance with known standards.
openaire +1 more source
Harmonic distortion in nearly sinusoidal oscillators
European Transactions on Telecommunications, 1990AbstractAn approach for calculation of harmonic content (h) in nearly sinusoidal oscillators is presented. It uses Volterra series to develop explicit expressions, which are then used to discuss the dependence of h and the dependence of amplitudes of harmonics upon the feedback and upon the oscillation‐amplitude.
openaire +1 more source
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
openaire +1 more source
IEEE Power Engineering Society Summer Meeting,, 2003
Harmonic distortion limits recommended by the majority of known standards are for steady-state harmonics. The harmonic distortions measured in the field, however, vary with time. How to apply the steady-state limits to the actual measured harmonics has been a concern for verifying compliance to harmonic standards.
openaire +1 more source
Harmonic distortion limits recommended by the majority of known standards are for steady-state harmonics. The harmonic distortions measured in the field, however, vary with time. How to apply the steady-state limits to the actual measured harmonics has been a concern for verifying compliance to harmonic standards.
openaire +1 more source
Harmonic distortion. Genesis to revelation?
Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference, 2002With the recent developments in personal computers and their widespread use in exploiting the Internet, there has been a resulting demand for high speed communications. The use of conventional telephone networks poses a significant problem for error-free data transmission by modem.
openaire +1 more source
The effects of harmonic distortion on equipments
IEE Colloquium on Sources and Effects of Harmonic Distortion in Power Systems, 1997All transformers are affected by harmonics given that any power system is contaminated to some degree by them. What is of interest and concern are the extremes, albeit known and in most cases predictable extremes. Some loads are known as classical harmonic generators so far as transformers are concerned. Any transformer connected to a converter load or
openaire +1 more source