Results 71 to 80 of about 1,002,790 (325)

A novel method for calculating harmonic contribution based on difference recurrence estimation

IET Generation, Transmission & Distribution
Determining the harmonic contribution of each harmonic source is conducive to improving the harmonic management of the power system. The main problem with harmonic contribution calculation is determining the equivalent system harmonic impedance.
Huichun Hua, Han Gao, Lijie Gao, Haichao Guo   +3 more
doaj   +1 more source

Control strategy of harmonic suppression of micro-grid based on virtual harmonic impedance

Gong-kuang zidonghua, 2017
In view of problem of harmonic pollution caused by nonlinear loads in micro-grid, a control strategy of harmonic suppression of micro-grid based on virtual harmonic impedance was proposed.
XU Ruidong, ZHOU Jianyong, WANG Boya, YU Zhiwei, WANG Linge, CAO Liru, WU Chenli   +6 more
doaj   +1 more source

Experimental Validation of Harmonic Impedance Measurement and LTP Nyquist Criterion for Stability Analysis in Power Converter Networks

IEEE transactions on power electronics, 2019
This paper presents the first experimental validation of the stability analysis based on the online measurement of harmonic impedances exploiting the linear time-periodic (LTP) approach applied to ac networks of power converters.
Valerio Salis, A. Costabeber, S. Cox, F. Tardelli, P. Zanchetta   +4 more
semanticscholar   +1 more source

Theory and New Amplification Regime in Periodic Multi Modal Slow Wave Structures with Degeneracy Interacting with an Electron Beam

, 2015
We present the theory of a new amplification regime in Travelling Wave Tubes (TWTs) composed of a slow-wave periodic structure that supports multiple electromagnetic modes that can all be synchronized with the electron beam.
Capolino, Filippo, Othman, Mohamed, Tamma, Venkata Ananth   +2 more
core   +1 more source

Fully integrated CMOS power amplifier design using the distributed active-transformer architecture [PDF]

, 2002
A novel on-chip impedance matching and power-combining method, the distributed active transformer is presented. It combines several low-voltage push-pull amplifiers efficiently with their outputs in series to produce a larger output power while ...
Aoki, Ichiro, Hajimiri, Ali, Kee, Scott D., Rutledge, David B.   +3 more
core   +1 more source

Developing evidence‐based, cost‐effective P4 cancer medicine for driving innovation in prevention, therapeutics, patient care and reducing healthcare inequalities

Molecular Oncology, EarlyView.
The cancer problem is increasing globally with projections up to the year 2050 showing unfavourable outcomes in terms of incidence and cancer‐related deaths. The main challenges are prevention, improved therapeutics resulting in increased cure rates and enhanced health‐related quality of life.
Ulrik Ringborg, Joachim von Braun, Julio Celis, Anton Berns, Michael Baumann, Tit Albreht, Nancy Abou‐Zeid, Vanderlei Bagnato, Christian Brandts, Chien‐Jen Chen, Massimiliano di Pietro, Manjit Dosanjh, Thomas Dubois, Alexander Eggermont, Angelika Eggert, Ingemar Ernberg, Sara Faithfull, Johannes Förner, Stefan Fröhling, Manuel Heitor, Leroy Hood, Wei Jiang, Bengt Jönsson, Ravi Kannan, Maria Leptin, Su Li, Peter Lindgren, Douglas Lowy, Jun Ma, Alex Markham, Péter Nagy, Simon Oberst, M. Iqbal Parker, Danielle Rodin, Kevin Ryan, Joachim Schüz, Richard Sullivan, Josep Tabernero, Peter Turkson, Oliver Várhelyi, Harold Varmus, Chijie Wang, Elisabete Weiderpass, Nils Wilking   +43 more
wiley   +1 more source

Adaptive Harmonic Impedance Control and Flexible Compensation Method for AI Data Centers

Energies
The stochastic fluctuations of AI computational loads inject harmonic currents into the DC bus, amplifying bus voltage ripples and weakening the power quality. Existing strategies typically rely on high-gain control strategies to minimize harmonic output
Jinsong Li, Bo Yang, Hao Li, Zhigang Yao, Qiwei Xu, Shuai Lu   +5 more
doaj   +1 more source

Phasor-Based Assessment for Harmonic Sources in Distribution Networks [PDF]

, 2020
Phasor-based interdependencies of multiple harmonic sources, especially Distributed Energy Resources, on distribution networks are analyzed in this paper. A new index, Phasor Harmonic Index (IPH), is proposed by the authors.
Arghandeh, R., Broadwater, R. P., Centeno, V., Cheng, D., Jung, J., Onen, A. Onen   +5 more
core  

Capacitive compensation at nonsinsoidal buses based on IEEE Std. 18-1992 [PDF]

, 2003
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted.
Zobaa, AF
core   +1 more source

Harmonic mitigation potential of shunt harmonic impedances and the influence of background distortion [PDF]

2003 IEEE Bologna Power Tech Conference Proceedings,, 2004
Although complete compensation is only possible using true active filters, shunt harmonic impedances (SHI) have been shown to provide a considerable reduction of the harmonic propagation. In this paper, the mitigation potential of different shunt harmonic impedances is investigated, together with their VA-rating.
Ryckaert, Wouter, Ghijselen, Jozef, Melkebeek, Jan   +2 more
openaire   +2 more sources