Results 251 to 260 of about 5,914,333 (296)

Torque Ripple Suppression for Open-End Multi-Phase PMSMs Operating Under Open-Phase Faults

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018
Open-phase faults in multiphase PMSMs could occur either through an electrical failure or by selective isolation of one or a higher number of phase windings. In such cases, postfault currents are injected into the remaining healthy windings to maintain an average torque.
Mohammad Farshadnia, Matthew Priestley, M. A. M. Cheema, John E. Fletcher   +3 more
openaire   +1 more source

Data Symbol Phase Synchronizers of Open Loop

2009 Fourth International Conference on Digital Telecommunications, 2009
In this work, we study the data symbol synchronizers of open loop. The recovered clock of this synchronizers hasn’t the capacity to follow the input changes. However, its simplicity allows operation at high data rates.We present four synchronizer types namely the tank circuit, the SAW (Surface Acoustic Wave) circuit, the monostable circuit and the ...
Reis, A.D., Rocha, J.F., Gameiro, A.S., Carvalho, J.P.   +3 more
openaire   +2 more sources

Modeling and Control of Three-Phase PMSMs Under Open-Phase Fault

IEEE Transactions on Industry Applications, 2011
This paper deals with modeling and control of three-phase permanent-magnet synchronous motors (PMSMs) under open-phase fault conditions. Suitable reference frame transformations are introduced in order to obtain a q-d axis model similar to that normally used for machines working in healthy conditions.
Gaeta A, SCELBA, GIACOMO, Consoli A.
openaire   +3 more sources

Reflective passive phased array with open polarization phase shifters

IEEE International Symposium on Phased Array Systems and Technology, 2003., 2004
A novel design of spiraphase-type reflective phased array is proposed. A full-wave mathematical model is developed to predict the scanning characteristics of this phased array. Numerical optimization of the geometry of the array element is performed. The scanning characteristics of the phased array with optimized elements are calculated.
A.E. Martynyuk, J.I. Martinez Lopez, N.A. Martynyuk   +2 more
openaire   +1 more source

Open Pinned-Phase CCD Technology

SPIE Proceedings, 1989
A novel CCD technology, open pinned-phase (OPP) technology, is presented. Particular attention is given to the design and process features of an OPP-CCD that unite multi- and virtual-phase technologies. It is found that the OPP/CCD will produce a modest short-wavelength QE and excellent charge collection efficiency characteristics which are similar to ...
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Computing Phase Speeds at Open Boundary

Journal of Hydraulic Engineering, 1990
In the course of modeling hydrodynamic phenomena in a limited area domain, one must specify open boundary conditions. Various forms of the Sommerfeld radiation condition have been used on the boundary of the domain, in the past, to permit internal disturbances to pass unhindered through the boundary.
Lakshmi H. Kantha, Alan F. Blumberg, George L. Mellor   +2 more
openaire   +1 more source

Open-Wye-Type Phase Conversion Systems

IEEE Transactions on Industry and General Applications, 1970
This paper describes the novel open-wye-type phase conversion system which operates three-phase motors on single-phase power. The system is initially depicted in its most basic circuit, with more sophisticated circuits presented as the paper progresses. Circuit voltages and currents are outlined for the basic system.
Kenneth C. Elliott, William M. Elliott
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Opening Phases

Abstract This chapter examines Julius Caesar’s strategic preparations and initial actions during his Gallic campaigns. He recruits knowledgeable local staff, evaluates the region’s logistical capabilities, and prepares for military engagement.
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The Opening Phase of STAPP

1979
In my book Short-Term Psychotherapy and Emotional Crisis (Sifneos, 1972) I discussed at some length the specific requirements for STAPP. To avoid repetition, therefore, I shall only summarize the major points here.
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Plasma Opening Switch Conduction Phase Adjustment

AIP Conference Proceedings, 2002
Plasma Opening Switch conduction phase duration adjustment has a practical importance for several POS applications. They are POS synchronization and increase of energy and current density coming through the POS. The report represents the results of both experiments and simulations on POS conduction phase duration on experimental test-bench.
openaire   +1 more source