منابع مشابه
degradation of oil impregnated paper insulation under influence of repetitive fast high voltage impulses
در طی سالهای اخیراستفاده ازمنابع انرژی تجدید پذیر در شبکه های مدرن بنا به دلایل زیست محیطی و اقتصادی به طور گسترده استفاده شده است همچون نیروگاههای بادی و خورشیدی .ولتاژتولیدی این نیروگاهها اغلب به فرم dc می باشد وادوات الکترونیک قدرت به عنوان مبدل و پل بین شکل موج dc وac استفاده می شوند.این پروسه باعث ایجاد پالسهایی برروی شکل موج خروجی می شود که می تواند وارد تجهیزات قدرت همچون ترانسفورماتور ی...
15 صفحه اولFlow mechanisms in high pressure gas atomization
Very fine (d < 10/~m) metal and alloy powders can be produced efficiently by a high pressure gas atomization (HPGA) technique. Rapid solidification processing, metal injection molding, thermal spraying and other emerging powder-processing approaches benefit from the use of such fine powders. This paper reports on the results of an investigation of gas atomization process dynamics with emphasis ...
متن کاملNonequilibrium electrons in tunnel structures under high-voltage injection
N. B. Kopnin,1,2,3 Y. M. Galperin,4,5 J. Bergli,4 and V. M. Vinokur3 1Low Temperature Laboratory, Helsinki University of Technology, P.O. Box 5100, Espoo 02015 TKK, Finland 2L. D. Landau Institute for Theoretical Physics, 117940 Moscow, Russia 3Argonne National Laboratory, Argonne, Illinois 60439, USA 4Department of Physics, University of Oslo, P.O. Box 1048, Blindern, 0316 Oslo, Norway 5A.F. I...
متن کاملNovel High Reliability Bandgap-based Under- Voltage-lockout Methods
In this paper, a novel method to build under-voltage-lockout (UVLO) circuit has been developed. The method based on bandgap reference voltage comparator, which take advantage of a reference voltage produced by itself realizes voltage compare, stability of parameters such as threshold point voltage, hysteretic range, without utilizing an extra bandgap reference voltage. An abstractive feature of...
متن کاملVoltage Equalization of DC Link capacitors in a CHB-Based PET under the Unbalance Voltage Conditions
The unbalance currents injection by power electronic transformers in order to improve the unbalance voltage conditions of the network causes an imbalanced voltage in the DC link capacitors and creates an active powers inequality in the different phases. In this paper, the proposed control structure independently controls the active power of each phase by modifying the power angle between the vo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1959
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.62.12_1830