Thesis (Ph. D.)--Open University. BLDSC no. DX79222. / Consulation copy in 2 volumes.

Akademisk afhandling--Stockholms högskola. / In two parts, each with special t.p.; pt. 1 dated 1917. Imprint on cover: Lund, Gleerupska univeritetsbokhandeln. "Résumé (in French): p. [366]-370.

Akademisk afhandling--Stockholms högskola. / In two parts, each with special t.p.; pt. 1 dated 1917. Imprint on cover: Lund, Gleerupska univeritetsbokhandeln. "Résumé (in French): p. [366]-370.

No description available.

Thesis (M.S.)--Mississippi State University. Department of Electrical and Computer Engineering. / Title from title screen. Includes bibliographical references.

Thesis (M. Eng.)(Electronic)--University of Pretoria, 2003. / Summaries in Afrikaans and English. Includes bibliographical references.

No description available.

The Digital Multifunction Power Measuring System is the outgrowth of a project involving the design of a prototype precision Digital Watt Transducer for the Bonneville Power Administration (BPA). A prototype Digital Watt Transducer was built and tested since no other device of the desired accuracy was connnercially available. Upon partial completion of the project, another Watt Transducer did become available which was essentially identical to our development. Since we could not economically compete with the manufacturer of these Watt Transducers, our project was stopped. Over a period of several months we thought about other ways to apply the experience gained from the Watt Transducer project, and came upon the idea of designing a precision multifunction power meter to help simplify the calibration of Watt and VAR transducers in the Instrumentation and Standards Laboratory, and possibly replace approximately five less accurate analog meters presently used by our Meter-Relay Craftsmen in their field testing. Since no similar meter was available, and since possible revenues lost to inaccurate measurement could justify the development costs of such a meter, we were given authorization to design and build it. This instrument is the Digital Multifunction Power Measuring System which measures the following electrical parameters to approximately plus or minus one-tenth of one percent or better accuracy: True RMS AC Volts in two ranges; True RMS AC Amps in six ranges; Watts in twelve ranges; VARs in twelve ranges; Phase Angle between Volts and Amps in all ranges; DC Volts in three ranges. This instrument has been completed, tested, and calibrated to its design accuracies and is presently being demonstrated within the BPA system to make its availability known to those personnel who might have need for such an instrument.

No description available.

Orientador: Jose Antonio Siqueira Dias / Acompanha 1 CD-R / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação / Made available in DSpace on 2018-08-14T09:20:05Z (GMT). No. of bitstreams: 1 Lopes_PauloHenriquedeOliveira_M.pdf: 1347912 bytes, checksum: 86c17d3e935cd0c95c11539e4590d844 (MD5) Previous issue date: 2009 / Resumo: O aumento da poluição nos grandes centros urbanos tem levado a uma busca incessante de soluções tecnológicas para a substituição dos veículos com motor a combustão por outra fonte de energia, sendo que os veículos elétricos têm se apresentado como uma das alternativas mais promissoras para um futuro próximo. Entretanto, um dos problemas a resolver na utilização de veículos puramente elétricos é o abastecimento (recarga das baterias) nas ruas. Neste trabalho é apresentado o projeto, desenvolvimento e implementação de um protótipo de um ponto de fornecimento de energia elétrica pré-paga usando cartões indutivos. O protótipo desenvolvido operou dentro das especificações e normas aplicáveis ao setor de medida de energia elétrica. Outras aplicações para este equipamento estão sendo estudadas, como por exemplo na venda de energia elétrica para residências de baixa renda. / Abstract: The increasing in pollution caused by combustion engines in large cities has motivated the search for new technologies to replace these engines, and the electrical vehicle is a promissing alternative in the near future. However, one of the problems that remains to be solved is charging these vehicles in the streets. This works presents the design, development and implementation of a pre-paid point of sale of electrical energy equipment which uses inductive cards. The developed prototype meets the specifications and rules of the Brazilian electrical sector for the energy meters. Other applications for this pre-paid energy meter are being considered, as, for example, in selling pre-paid energy to low. / Mestrado / Eletrônica, Microeletrônica e Optoeletrônica / Mestre em Engenharia Elétrica