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Institution

Hydro-Québec

GovernmentMontreal, Quebec, Canada
About: Hydro-Québec is a government organization based out in Montreal, Quebec, Canada. It is known for research contribution in the topics: Electric power system & Dielectric. The organization has 2596 authors who have published 4433 publications receiving 100878 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, the effect of prolonged cycling on the hydriding/dehydriding properties and on the structure of nanocrystalline MgH 2 -V composite produced by high-energy ball milling was investigated.

91 citations

Journal ArticleDOI
TL;DR: This paper presents the creation of the transient analysis numerical simulator MatEMTP in the computational engine frame of MATLAB and proposes a new design idea suitable for EMTP re-development in a high level programming context.
Abstract: The traditional method for developing electric network analysis computer programs is based on coding using a conventional computer language: FORTRAN, C or Pascal. The programming language of the EMTP (Electromagnetic Transients Program) is FORTRAN-77. Such a program has a closed architecture and uses a large number of code lines to satisfy requirements ranging from low level data manipulation to the actual solution mathematics which eventually become diluted and almost impossible to visualize. This paper proposes a new design idea suitable for EMTP re-development in a high level programming context. It presents the creation of the transient analysis numerical simulator MatEMTP in the computational engine frame of MATLAB. This new approach to software engineering can afford a dramatic coding simplification for sophisticated algorithmic structures.

90 citations

Journal ArticleDOI
TL;DR: A survey of the literature on recent progress in lithium-ion batteries is presented, with the active sub-micron-sized particles of the positive electrode chosen in the family of lamellar compounds LiMO2, where M stands for a mixture of Ni, Mn, Co elements, and in thefamily of yLi2MnO3•(1 − y)LiNi½Mn½O2 layered-layered integrated materials.
Abstract: This review presents a survey of the literature on recent progress in lithium-ion batteries, with the active sub-micron-sized particles of the positive electrode chosen in the family of lamellar compounds LiMO2, where M stands for a mixture of Ni, Mn, Co elements, and in the family of yLi2MnO3•(1 − y)LiNi½Mn½O2 layered-layered integrated materials. The structural, physical, and chemical properties of these cathode elements are reported and discussed as a function of all the synthesis parameters, which include the choice of the precursors and of the chelating agent, and as a function of the relative concentrations of the M cations and composition y. Their electrochemical properties are also reported and discussed to determine the optimum compositions in order to obtain the best electrochemical performance while maintaining the structural integrity of the electrode lattice during cycling.

90 citations

Patent
03 Dec 2001
TL;DR: In this paper, a method for synthesizing Li4Ti5O12, Li4ZβTi (5-β)O 12, OR Li (4-α) ZαTi 5O12 particles preferably having spinel structure was proposed.
Abstract: The invention concerns a method for synthesising Li4Ti5O12, Li4ZβTi (5-β)O12, OR Li (4-α) ZαTi5O12 particles preferably having spinel structure, wherein: β is greater than 0 and not more than 0.5 (preferably having spinel structure); α represents a number greater than zero and not more than 0.33, Z representing a source of at least a metal selected among the group consisting of Mg, Nb, Al, Zr, Ni, Co. Said particles coated with carbon exhibit particularly interesting electrochemical properties as anode and/or cathode component of electrochemical generators.

90 citations

Journal ArticleDOI
TL;DR: In Hydro-Quebec, an automatic measurement and recording of the electric field along the insulator string which decreases considerably in front of an internally-shorted insulator is performed as discussed by the authors.
Abstract: Until now at Hydro-Quebec, overhead power transmission line porcelain insulators had been tested by the buzz method which simply consists in applying a short-circuit to each insulator in a string and listening for a buzz-like sound indicating a good insulator. However, safety considerations that preclude short-circuiting insulators and other disadvantages of that method have led Hydro-Quebec to undertake and complete the development of a new insulator tester. The working principle of this new device is based on the automatic measurement and recording of the electric field along the insulator string which decreases considerably in front of an internally-shorted insulator. The tester is slid along the string while the insulators are counted automatically. The information from tests on up to 200 strings can be stored in the device to be later transferred in a host computer for interpretation and/or permanent storage. The new tester also gives information on voltage distribution along the insulator strings which can be useful for the design of future power transmission lines. >

90 citations


Authors

Showing all 2603 results

NameH-indexPapersCitations
John B. Goodenough1511064113741
Mark Sutton128100978703
Pierre Legendre9836682995
Jackie Y. Ying8958735694
Karim Zaghib6953316785
Geza Joos6751415880
M. V. Reddy6625415772
Kamal Al-Haddad6182821017
Jean-Pol Dodelet5916418473
Taha B. M. J. Ouarda5834912230
Michael R. Wertheimer5432011003
Richard Martin5433911465
Michel Armand5415244873
Marc Lucotte501698088
Abdelbast Guerfi492156739
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
202256
2021115
2020173
2019162
2018156