Results 221 to 230 of about 7,959 (262)
Some of the next articles are maybe not open access.
Quantitative perturbation theory by successive elimination of harmonics
Celestial Mechanics & Dynamical Astronomy, 1993This paper establishes the theoretical basis for the method presented by the first author [see the previous review, ibid., 101-130 (1993)]. Two theorems are proved. The first one proves the ``almost invariantness within the limit \(T\) in time'' of tori constructed by the method. These tori fill up in the phase space an open set \(A\), say.
A. Morbidelli, A. Giorgilli
openaire +3 more sources
FIR bi notch filters as harmonics eliminators
Proceedings of the International Conference and Workshop on Emerging Trends in Technology, 2010A methodology for designing FIR bi notch filters derived from second order prototype IIR notch filters is suggested. Rejection bandwidth for the designed filter can be controlled by suitable choice of 'r', the pole radius of the IIR prototype notch filters.
Rohini Deshpande +2 more
openaire +1 more source
IEEE Transactions on Industry Applications, 1973
This paper considers the theoretical problem of eliminating harmonics in inverter-output waveforms. Generalized methods are developed for eliminating a fixed number of harmonics in the half-bridge and full-bridge inverter-output waveforms, and solutions are presented for eliminating up to five harmonics.
Hasmukh S. Patel, Richard G. Hoft
openaire +1 more source
This paper considers the theoretical problem of eliminating harmonics in inverter-output waveforms. Generalized methods are developed for eliminating a fixed number of harmonics in the half-bridge and full-bridge inverter-output waveforms, and solutions are presented for eliminating up to five harmonics.
Hasmukh S. Patel, Richard G. Hoft
openaire +1 more source
On the successive elimination of perturbation harmonics
Celestial Mechanics & Dynamical Astronomy, 1993The author presents a method of investigation of perturbations of an integrable Hamiltonian system of two degrees of freedom. He discusses its advantages and defaults in comparison with other applications. The main idea is based on the fact that a Hamiltonian with only one harmonic is integrable.
openaire +1 more source
Harmonic Elimination Using DSTATCOM
2015There has been an increasing awareness admits customers and utilities regarding superior quality and reliable electric power. The awareness has been triggered by a stupendous increase in the number of nonlinear loads such as power electronic devices. Due to nonlinear loads and low power factor the gravest power quality problems today are voltage sags ...
Shabana Urooj, Pikasha Sharma
openaire +1 more source
Research on Harmonic Elimination of the DC Circuit
Applied Mechanics and Materials, 2014270V high voltage DC power supply system with grid of light weight, uninterrupted power supply and a two power density higher characteristic, in recent years become a hot research topic in domestic and international air supply system.[ To ensure the high voltage DC bus power quality, for the safe operation of the aircraft is very important.
Hao Hua Li, You Hua Wang, Dun Yu Zhu
openaire +1 more source
Current Injection Method to Eliminate Harmonics
IEEE Industry Applications Magazine, 1995This article proposes a method to eliminate AC harmonic currents by injecting equal-but-opposite harmonic compensating currents. This method is applicable to any type of load considered a harmonic source. This article describes a system involving a hardware interface, a PC, and advanced software to measure, analyze, and report the condition of ...
Abdul H. Samra, Asrat Teshome
openaire +1 more source
Harmonic elimination for constrained optimal PWM
30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004, 2005The selected harmonic elimination (SHE) pulse-width modulation (PWM) inverter eliminates low-order harmonics by optimizing the distribution of switching angles and can generate high quality output waveforms. The goal of optimal SHE-PWM is to select the switching instances (angles) in such a way that a waveform with a particular characteristic is ...
null Han Huang +2 more
openaire +1 more source
Harmonic inharmonicity: Eliminating beats with quantized harmonics
Applied Acoustics, 2023Nils Wandel +2 more
openaire +1 more source
A new robust scheme for harmonic elimination
Electric Power Systems Research, 1997Abstract A new electronic scheme for harmonic elimination in low voltage level circuits is proposed. The performance of this scheme in the context of robustness to additive noise is evaluated. The scheme is based upon the cancellation of harmonics from actual signal by comparing it with the pure fundamental harmonic.
S.U.A. Qidwai, M. Bettayeb
openaire +1 more source