11,618 research outputs found
Development Of Decision Model For Maintenance Analysis Of Non-Repairable Component By Considering The External Factor [TS192. R821 2007 f rb].
Full text linkPenyelenggaraan pencegahan (Preventive Maintenance – PM) merupakan salah satu strategi yang digunakan untuk mengurangkan masalah kerosakan mesin yang berlaku secara tiba-tiba.
Preventive Maintenance (PM) is one of the strategies that can be applied to reduce the machine breakdown problems due to unplanned maintenance. However, the application of PM in term of when is the best time to carry out the PM is an important issue
Extrapleural Nuss procedure for chest wall deformity complicating thoracotomy and pulmonary resectio
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General Analytical Model of Magnet Average Eddy-Current Volume Losses for Comparison of Multi-phase PM Machines with Concentrated Winding
Full text linkthis paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are exhibited according to the ratio between each harmonic wavelength and magnet pole width. Then various losses sub-models are deduced. Using this analytical model, magnet volume losses for many Slots/Poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Finally, in order to verify the theoretical study, Finite Element models are built and simulation results are compared with analytical calculationsProjet MHYGALE/ADEM
Analytical Model of Magnet Eddy-Current Volume Losses in Multi-phase PM Machines with Concentrated Winding
Full text linkThanks to IEEE. The original PDF of the article can be found at: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6342330&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6342330 MHYGALE, project managed by VALEO-EEMthis paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated. Secondly, analytical model of magnet volume losses is developed by studying the interaction between MMF harmonics wavelengths and magnet pole dimensions. Different cases of this interaction are studied according to the ratio between each harmonic wavelength and magnet pole width (following flux density variation). Then various losses sub-models are deduced. Finally, using this analytical model, magnet volume losses for many slots/poles combinations of 3, 5, and 7 phase machines with concentrated winding are compared. This comparison leads to classify combinations into different families depending on their magnet losses level. Besides, in order to validate the theoretical study, Finite Element models are built and simulation results are compared with analytical calculations.MHYGALE/ADEM
Disseminated tuberculosis presenting as multiple hepatosplenic microabscesses and pancytopenia in a teenage boy
No full textThymectomy for non-thymomatous myasthenia gravis: a comparison of surgical methods and analysis of prognostic factors.
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