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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

A transient analysis of synchronous machines

Butler, John Wendell January 1932 (has links)
No description available.
2

Development of a computer based total productive maintenance model for electrical motors

Muniswamy, Aruna. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2008. / Title from document title page. Document formatted into pages; contains vii, 105 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 85-88).
3

Direct digital simulation of power semiconductor-controlled electrical machines

Bahnassy, Hamdy Mohamed. January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1981. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 515-541).
4

Motores a imas permanentes da comutacao eletronica de alta velocidade: uma abordagem ao motor sem ferro no estator

SCHEIBIG, WALTER E.F. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:40:55Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:29Z (GMT). No. of bitstreams: 1 02839.pdf: 2363031 bytes, checksum: 0bc590cacc13ab37c25ea02bb98eaba4 (MD5) / Tese (Doutoramento) / IPEN/T / Escola Politecnica, Universidade de Sao Paulo - POLI/USP
5

Motores a imas permanentes da comutacao eletronica de alta velocidade: uma abordagem ao motor sem ferro no estator

SCHEIBIG, WALTER E.F. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:40:55Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:01:29Z (GMT). No. of bitstreams: 1 02839.pdf: 2363031 bytes, checksum: 0bc590cacc13ab37c25ea02bb98eaba4 (MD5) / Tese (Doutoramento) / IPEN/T / Escola Politecnica, Universidade de Sao Paulo - POLI/USP
6

A vector controlled induction motor drive /

Panjaitan, Rusman. Unknown Date (has links)
Thesis (M Electrical Eng)--University of South Australia, 1995
7

Investigation, analysis and design of the linear brushless doubly-fed machine

Seifkhani, Farroh 08 February 1991 (has links)
This thesis covers the efforts of the design, analysis, characteristics, and construction of a Linear Brush less Doubly-Fed Machine (LBDFM), as well as the results of the investigations and comparison with its actual prototype. In recent years, attempts to develop new means of high-speed, efficient transportation have led to considerable world-wide interest in high-speed trains. This concern has generated interests in the linear induction motor which has been considered as one of the more appropriate propulsion systems for Super-High-Speed Trains (SHST). Research and experiments on linear induction motors are being actively pursued in a number of countries. Linear induction motors are generally applicable for the production of motion in a straight line, eliminating the need for gears and other mechanisms for conversion of rotational motion to linear motion. The idea of investigation and construction of the linear brushless doubly-fed motor was first propounded at Oregon State University, because of potential applications as Variable-Speed Transportation (VST) system. The perceived advantages of a LBDFM over other LIM's are significant reduction of cost and maintenance requirements. The cost of this machine itself is expected to be similar to that of a conventional LIM. However, it is believed that the rating of the power converter required for control of the traveling magnetic wave in the air gap is a fraction of the machine rating. The constructional design of the machine is such that the primary contains two 3-phase windings. One of these 3-phase systems is connected directly to the utility grid; the second 3-phase system, with a different number of poles, is connected to a power electronic converter which has the capability of providing adjustable frequency and amplitude of voltage or current. The speed of the traveling magnetic field can be varied simply by controlling the output frequency of the power electronic converter. The design of the actual machine is such that the two 3-phase systems laid in the primary of the machine are magnetically decoupled from each other because of the difference in pole number of the two systems, (e.g. 6-pole and 2-pole for the test prototype machine in our research lab). The other degree of freedom that this machine provides, is the operation of the machine under two distinct speeds by implementing the pole change technique. This mode of operation can give only discrete changes in speed, however, it provides efficient running at those speeds with a minimum of control mechanism. On the other hand, it is anticipated that the LBDFM with two actively fed windings will produce a continuously adjustable speed over a wide range. Hence, LBDFM will be superior if it can be designed to function effectively. / Graduation date: 1991
8

Load tests on a wound rotor polyphase induction motor with unbalanced voltages on the stator

Moshy, Albert Meir 05 1900 (has links)
No description available.
9

Noise in induction motors.

Attas, Isaac. January 1949 (has links)
Psychologists have found that noise reduces human efficiency. This effect may be considerable even for the most phlegmatic individuals. Moreover, almost everyone objects to unnecessary noises. In recent years there has arisen a very insistent demand for quieter electrical apparatus. This applies particularly to household apparatus such as refrigerator motors, vacuum sweepers and the like. Practically noiseless motors are also required for various drives ( refrigerating plants, circulation pumps of hot water systems, big ventilating systems for rooms, organ bellows etc. ) in non industrial plants such as storerooms, business houses, hotels, hospitals, churches, theatres etc> where all noise should be suppressed. It must also be noted that the stage has been reached where it is taken for granted that the products of the better known manufacturers will give entirely satisfactory performance, and often, the deciding factor between various makes is only the quietness with which the equipment operates. However,noise and vibration are not merely annoyances which may affect the sale of a product or lower the efficiency of a worker. They are often evidences of defects in design and manufacture which seriously affect the life of the equipment and, in many cases, the safety of the user.[...]
10

Über die Entwicklungsmöglichkeiten des Induktionsmotors für Einphasen-Wechselstrom

Koch, R. von. January 1905 (has links)
Thesis (doctoral)--Königliche Technische zu Berlin, 1905. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (p. [103]-104).

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