نتایج جستجو برای: wound rotor wr resolver
تعداد نتایج: 89350 فیلتر نتایج به سال:
in this research work with the aid of tagouchi experimental design and rawing of interaction curves with minitab software, the best rotor speed and dump temperature of mixing for physico-mechanical and rheological properties of the rubber compound with three mixing steps was obtained. moreover by plotting the mean curves in excel worksheet, the dependency of properties on rotor speed, dump temp...
Brushless DC Motors have a permanent magnet rotor and the stator winding are wound such that the back electromotive force (EMF) is trapezoidal. The motor posses high Torque/weight ratio, operate at very high speed, very compact & electronically controlled. In this paper, we have to use three algorithms ZN, GA & PSO respectively. On the basis of performance of these three techniques, PSO have hi...
This paper presents dynamic modeling and simulation of Brushless Doubly Fed Induction Generator (BDFIG) as an alternative for variable speed wind power applications. The mathematic models of active and reactive power for BDFIG have been developed. The power control systems of a 75 kVA generator and wind turbine were simulated in Matlab/Simulink/SymPower Systems. The generator’s control system i...
Context. The favoured progenitors of long-duration gamma-ray bursts (GRBs) are rapidly rotating Wolf-Rayet (WR) stars. However, most Galactic WR stars are slow rotators, as stellar winds are thought to remove angular momentum. This poses a serious challenge to the collapsar model. Recent observations indicate that GRBs occur predominately in low metallicity (Z) environments, which may resolve t...
Virtually all the commonly-used evaluation metrics for entity coreference resolution are linguistically agnostic, treating the mentions to be clustered as generic rather than linguistic objects. We argue that the performance of an entity coreference resolver cannot be accurately reflected when it is evaluated using linguistically agnostic metrics. Consequently, we propose a framework for incorp...
This work presents a novel wound rotor synchronous machine with dampers with dual three-phase open-end stator windings. The aim of the proposed machine is to improve the power segmentation and the availability of the drive system. The mathematical model of this machine is presented in the Park reference frame. This machine is supplied by four 2-level inverters, where each inverter is dimensione...
ترمیم بمعنای جانشینی سلولهای مرده بوسیله سلولهای زنده می باشد. زخمها به دو نوع open wound , closed wound : تقسیم بندی می شوند. روش ترمیم در نوع closed wound بصورت primery intention و در نوع open wound بصورت secondary intention می باشد. عوامل موضعی نظیر ایسکمی لوکال، هماتوم، وجود جسم خارجی در زخم و استفاده از داروهای استروئیدی التیام زخم را به تعویق می اندازند. اسکار عارضه طبیعی هرزخمی است و بوا...
One maintenance task that still exist with conventional motors, are bearing lubrication and renewal. Bearingless motors are replaced with conventional motor that uses a magnetic levitation force to suspend a rotor without any mechanical contact. In bearingless motors, additional windings are wound together with motor windings in stator slots. In this paper, a bearingless permanent magnet-type s...
En España, el papel de la mujer dentro los sindicatos es poco conocido. El presente artículo tiene por finalidad describir posición asimétrica muchas mujeres con respecto a hombres en distintas facetas trayectoria vital, decir, quehacer reproductivo, productivo y sindical. Particularmente analiza las expresiones estas desigualdades que optaron profesiones del ámbito bienestar social sindicalism...
In this preliminary study, we analyzed the kind of anaphoric expressions that occur in expressions describing protein interactions found in biological text. We also studied the impact of anaphora resolution on protein interaction extraction, when an off-the-shelf anaphoric resolver (i.e., not one specially developed for this domain) is used, and looking at full texts as well as abstracts. Our r...
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