Results 241 to 250 of about 470,563 (307)
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SPE Offshore Europe, 1985
ABSTRACT Until now direct-current motors fed by thyristor rectifiers have dominated as variable-speed drive systems for oil-drilling applications. During drilling of a test well at Rogaland Research Center in Stavanger, Norway, a new drilling system "The Power Swivel" was tested and the conventional DC motor/SCR system was
S.O. Olsen, S. Knudsen
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ABSTRACT Until now direct-current motors fed by thyristor rectifiers have dominated as variable-speed drive systems for oil-drilling applications. During drilling of a test well at Rogaland Research Center in Stavanger, Norway, a new drilling system "The Power Swivel" was tested and the conventional DC motor/SCR system was
S.O. Olsen, S. Knudsen
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AC Drive Observability Analysis
IEEE Transactions on Industrial Electronics, 2013AC induction motors and permanent magnet synchronous drives became very popular for motion control applications due to their simple and reliable construction. Sensorless drive control is required in many applications to reduce drive production costs. While many approaches to magnetic flux, rotor speed, or other quantities needed to control electrical ...
Pavel Vaclavek, Petr Blaha, Ivo Herman
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Controlled AC Electrical Drives
IEEE Transactions on Industrial Electronics, 2008The use of AC electrical machines in controlled electrical drive applications is reviewed. The major types of electrical machines are briefly summarized to set the context and establish the physical basis for the control techniques used. Machine properties, which are the key to successful control, can be obscured by the necessary mathematics required ...
Finch JW, Giaouris D
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IEE Proceedings B Electric Power Applications, 1982
Variable-speed drives comprising static inverters and squirrel-cage induction machines have attractive characteristics and are suitable for use in many industrial applications. A major attribute of some of these drives is their very high energy efficiency, and this paper is a presentation of the results of an experimental investigation into the factors
R.M. Green, J.T. Boys
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Variable-speed drives comprising static inverters and squirrel-cage induction machines have attractive characteristics and are suitable for use in many industrial applications. A major attribute of some of these drives is their very high energy efficiency, and this paper is a presentation of the results of an experimental investigation into the factors
R.M. Green, J.T. Boys
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PREDICTIVE CONTROL FOR AC-DRIVES
IFAC Proceedings Volumes, 1989Abstract AC-drives are controlled by field or decoupling control. These solutions enable the control of the flux and the torque independently. For good dynamic response a good dynamic behaviour of these current control loops is necessary. Good dynamic response needs a high sampling rate and a high switching frequency of the inverter.
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1996
Abstract An important factor in worldwide industrial progress during the past several decades has been the increasing sophistication of factory automation. Manufacturing lines in an industrial plant typically involve one or more variable speed motor drives which serve to power conveyor belts, robot arms, overhead cranes, steel process ...
D W Novotny, T A Lipo
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Abstract An important factor in worldwide industrial progress during the past several decades has been the increasing sophistication of factory automation. Manufacturing lines in an industrial plant typically involve one or more variable speed motor drives which serve to power conveyor belts, robot arms, overhead cranes, steel process ...
D W Novotny, T A Lipo
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Proceedings of the IEEE, 1988
The progress of semiconductor technology in power electronics as well as microelectronics has made it possible to develop controllable AC drives without moving contacts, that are more powerful, of more compact design, improved efficiency and of superior dynamic performance.
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The progress of semiconductor technology in power electronics as well as microelectronics has made it possible to develop controllable AC drives without moving contacts, that are more powerful, of more compact design, improved efficiency and of superior dynamic performance.
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High power AC drives based on stacking of standard low power AC drives
2008 IEEE Power Electronics Specialists Conference, 2008Adjustable speed drives (ASDs) are used in industry, among others, in pumps, compressors, and fans. Standard low power ASDs are based on a rectifier, a voltage DC link, and an inverter. The selection of an ASD depends upon the voltage and power rating of the load.
Jorge A. Hidalgo +4 more
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