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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

An analysis of a two-axis excitation system for synchronous machines

楊世鈞, Yang, Shih-jung. January 1966 (has links)
published_or_final_version / Electrical Engineering / Master / Master of Science in Engineering
2

An investigation into the properties of axial-field alternators

陳梓芬, Chan, Tze-fun. January 1980 (has links)
published_or_final_version / Electrical Engineering / Master / Master of Philosophy
3

Operating point dependent modeling of synchronous reluctance motors and its implication on vector controlled motor performance

Wung, Peter Yu-Pu 08 1900 (has links)
No description available.
4

Improved synchronous reluctance machine with dual stator windings and capacitance injection.

Ogunjuyigbe, Ayodeji Samson Olatunji. January 2009 (has links)
D. Tech. Electrical Engineering. / Discusses the research needed to improve the performance indices (effective reactance ratio and torque index) of a synchronous reluctance machine with a simple salient rotor, using an electric circuit approach ; dual sator winding and capacitance injection, such that its power factor, torque and torque per ampere are attractive.
5

Modelagem computacional do aquecimento de um motor de indução monofasico aplicado em maquinas de lavar roupas durante a etapa de agitação / Computer based model for the heating of a single phase induction motor applied on washing machine during agitation task

Giesbrecht, Mateus, 1984- 11 September 2007 (has links)
Orientador: Gilmar Barreto / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação / Made available in DSpace on 2018-08-09T16:50:00Z (GMT). No. of bitstreams: 1 Giesbrecht_Mateus_M.pdf: 3904732 bytes, checksum: 55e43903b08b7c8d770f9120fb071c40 (MD5) Previous issue date: 2007 / Resumo: A motivação para este estudo é criar um modelo computacional capaz de prever se o regime de trabalho a que um motor monofásico de indução é submetido implica ou não em um aquecimento que comprometa os materiais isolantes do mesmo. A solução apresentada busca encontrar uma equação a diferenças em que a saída do sistema (temperatura do motor no instante k+1) é calculada como uma combinação linear das entradas (temperatura do motor, valor RMS da corrente e temperatura ambiente no instante k). Para conhecer os coeficientes desta combinação linear, foram realizados alguns ensaios e, a partir de seus resultados, foi aplicado o método dos mínimos quadrados para a obtenção do modelo computacional que representa o sistema. Os resultados computacionais obtidos com o modelo proposto refletem com exatidão o comportamento do sistema real. O modelo desenvolvido também é útil para outras aplicações em que se utilize um motor de indução monofásico em regime intermitente periódico com partida / Abstract: This study motivation was finding a computer-based model that was able to foresee if the duty cycle applied in a single-phase induction motor implies or not in an overheating that can compromise the motor insulation. The solution presented here is based on finding a difference equation in which the system output (motor temperature at time k+1) is calculated as a linear combination of the input (motor temperature, RMS current and ambient temperature at time k). The Mean Square Method was applied to find the coefficients of this linear combination, resulting in the final computational model that represents the system. The computational results found with the proposed model reflect exactly the real system behaviour. This model is also useful to other applications in which a single-phase induction motor during intermittent periodic duty with starting is used. / Mestrado / Automação / Mestre em Engenharia Elétrica

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