Results 211 to 220 of about 172,163 (262)
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On the High Speed Capacity of Bearingless Drives
IEEE Transactions on Industrial Electronics, 2014With soaring raw material costs, the need for smaller drives running at higher speeds is ever increasing. In parallel, magnetic bearings and bearingless drives have outgrown the purely academic level and are the state of the art solution for several industrial processes.
Hubert Mitterhofer +2 more
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Electrical Drives for Wide Speed Ranges
Transactions of the American Institute of Electrical Engineers, 1942THE electrical drive for a wide speed range is obtained by the addition of a rotating regulator called a Rototrol to a conventional variable voltage system. This combination will give a speed range of 120 to 1 or more, and can be used effectively in many industries to simplify the mechanical design of the machine which it drives.
G. A. Caldwell, W. H. Formhals
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Variable Speed Drives Evaluation Test
IEEE Industry Applications Magazine, 1998Testing of variable speed drives is not yet subject to standards, although motor drives with the same general design may differ significantly in performance. Tests of efficiency, harmonic content, immunity to voltage sags and capacitor switching are developed and applied to a collection of 3 hp and 20 hp 480 V drives.
E.G. Strangas, V.E. Wagner, T.D. Unruh
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A wide-range adjustable-speed drive
Electrical Engineering, 1949This paper describes the theory and characteristics of a drive which provides a wide range of adjustable speeds. The ratio of the maximum to minimum useful speeds attainable is approximately 20-to-1. The system provides high starting-torque, relatively high efficiencies and rapid deceleration through regenerative braking.
A. G. Conrad, E. R. Tribken
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Driving simulator validation for speed research
Accident Analysis & Prevention, 2002The behavioral validation of an advanced driving simulator for its use in evaluating speeding countermeasures was performed for mean speed. Using mature drivers, 24 participants drove an instrumented car and 20 participants drove the simulator in two separate experiments.
Stuart T, Godley +2 more
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1994
Adjustable-speed drives have been a stalwart contributor to the success of many of the world’s industrial processes for years. Textile fiber manufacturing, steel mill rolling, automobile tire cord processing, and a myriad of other processes utilize adjustable-speed electric drives in the manufacturing process. High energy costs are now causing interest
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Adjustable-speed drives have been a stalwart contributor to the success of many of the world’s industrial processes for years. Textile fiber manufacturing, steel mill rolling, automobile tire cord processing, and a myriad of other processes utilize adjustable-speed electric drives in the manufacturing process. High energy costs are now causing interest
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Parameter sensitivity of speed estimation in speed sensorless induction motor drives
Proceedings of 4th IEEE International Workshop on Advanced Motion Control - AMC '96 - MIE, 2002A method for evaluating the sensitivity of speed estimation to parameter variations in inverter motor drives with microprocessor based control is proposed in the paper. By using a full order flux asymptotic observer, the step by step analytical determination of the stator current error is carried out.
ATTAIANESE, Ciro +3 more
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On the interharmonic components generated by adjustable speed drives
10th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.02EX630), 2004The interharmonic generation process is addressed with reference to high power adjustable speed drives based on double stage conversion systems using line commutated or pulse width modulated inverters. Reference is made to ideal supply conditions. Formulas to forecast the interharmonic frequencies due to the interaction between the rectifier and the ...
F. DE ROSA +3 more
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Auditory Feedback Influences Perceived Driving Speeds
Perception, 2008Reducing the level of internal noise is seen as a goal when designing modern cars. One danger of such a philosophy is that one is systematically attempting to alter one of the cues that can be used by drivers to estimate speed and this could bias speed judgments and driving behaviour.
Horswill, Mark S., Plooy, Annaliese M.
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High-Speed Electrical Machines and Drives.
IEEE Trans. Ind. Electron., 2014The use of high-speed electrical machines and drives is in continuous evolution for a number of engineering applications, including electrical spindles for milling cutters and grinding, turbochargers, electrical turbo-compounding systems, aeroengine spools, helicopter and racing engines, and fuel pumps.
BOGLIETTI, Aldo +2 more
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