Results 191 to 200 of about 2,047 (232)

Design and Analysis of Brushless Doubly Fed Reluctance Machines

IEEE Transactions on Industry Applications, 2011
Brushless doubly fed reluctance machines (BDFRMs) are a class of machines that may be controlled using a power converter that has a rating lower than the total power rating of the machine. The attractive properties of these machines have, in the past, been offset by low power density and efficiency when compared to other types of machines.
Knight, Andrew M., Betz, Robert E., Dorrell, David G.   +2 more
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Comparison of brushless induction and reluctance doubly-fed machines

2013 IEEE International Symposium on Industrial Electronics, 2013
This paper compares alternative rotor designs for the brushless doubly-fed machine (BDFM) using finite element analysis to estimate their operating ranges and characteristics. Two types of rotors are considered: induction (with cage, nested layer, double layer and isolated layer) and reluctance rotors, so a total of five rotors are investigated.
Min-Fu Hsieh, I-Hsien Lin
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Brushless Series Connected Machine with DC Stator Excitation

SAE Technical Paper Series, 2012
<div class="section abstract"><div class="htmlview paragraph">The brushless DC motors with permanent magnets are used primarily in law power applications. There are no limits on weight and motor dimensions in considered motors with DC stator excitation.
Gladyshev S.P., Okrainskaya I.
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Brushless excitation systems for synchronous machines

Electronics and Power, 1975
This article gives a simple approach to the various commonly used systems of brushless excitation for synchronous machines. The systems described have been designed for medium and large-size motors and generators of the salient-pole type operating at 50 or 60 ...
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FeNdB for Slotless, Brushless D.C. Machines

1989
Once a decision has been made, more or less intuitively, one can be happy if the intuition is verified in the course of time. When starting in the CEAM-project, we were looking for a possible innovation to be realized by using FeNdB-magnets. The basic idea was not to start with known d.c. motors designed optimally for e.g.
I. Kitzmann, K. R. Schulz
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Theory of Brushless dc Machines

2009
This chapter contains sections titled: Introduction Voltage and Torque Equations in Machine Variables Voltage and Torque Equations in Rotor Reference-Frame Variables Analysis of Steady-State Operation Dynamic Performance References ...
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Design and analysis of brushless DC machines

Seventh International Conference on Electrical Machines and Drives, 1995
The brushless DC drive is now widely used and conventional design methodology determines key dimensions to give the required pole flux and the target torque/speed characteristics. However these analytical procedures give only limited information on saturation, armature reaction, and space/time variation of flux arising from MMF and permeance harmonics.
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Dynamic modeling of brushless doubly-fed machines

Conference Record of the IEEE Industry Applications Society Annual Meeting, 2003
A mathematical model that has the necessary flexibility to investigate design alternatives of the brushless doubly fed machine (BDFM) is developed. The model development starts from a consideration of the basic stator coils and the basic nested loops that constitute the rotor cage.
A.K. Wallace, R. Spee, H.K. Lauw
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Compensating characteristics of a brushless doubly-fed machine

2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692), 2004
The paper presents how a brushless doubly-fed machine (BDFM) may substitute the wound rotor induction machine as a variable speed synchronous condenser. Firstly a brief presentation of the machine operation is made. Then some characteristics of the system are presented.
A.C. Ferreira, R.M. Stephan, M.R.M. Araujo   +2 more
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A Brushless Permanent Magnet Machine With Integrated Differential

IEEE Transactions on Magnetics, 2011
Road vehicles are equipped with at least one differential which enables torque to be transmitted to the driving wheels while still being able to rotate at different speeds. The paper presents a brushless permanent magnet machine with integrated differential, where the torque is transmitted to the wheels/axles through two permanent magnet eddy current ...
Kais Atallah, Jiabin Wang
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