نتایج جستجو برای: electric insulation
تعداد نتایج: 152295 فیلتر نتایج به سال:
Haipeng Xie 1, Zhaohong Bie 1,*, Yanling Lin 1 and Chao Zheng 2 1 The State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China; [email protected] (H.X.); [email protected] (Y.L.) 2 The Department of Research and Application of New Technology, China Electric Power Research Institution, Beijing 100192, China; zhengch@epri....
With increase in the demand for electrical power conversion and control, new power electronic technologies are being developed rapidly. The power conversion is possible because of silicon power devices which are the most important components of any power electronic system. Among the power devices, insulated gate bipolar transistors (IGBT) are more accepted and widely used in various application...
«Cahiers Techniques» is a collection of documents intended for engineers and technicians, people in the industry who are looking for more in-depth information in order to complement that given in product catalogues. Furthermore, these «Cahiers Techniques» are often considered as helpful «tools» for training courses. They provide knowledge on new technical and technological developments in the e...
In liquid metal blankets the interaction of the moving breeder with the intense magnetic field that confines the fusion plasma results in significant modifications of the velocity distribution and increased pressure drop compared to hydrodynamic flows. Those changes are due to the occurrence of electromagnetic forces that slow down the core flow and which are balanced by large driving pressure ...
Voltage sensors are an important part of the electric system. In service, traditional voltage sensors need to directly contact a high-voltage charged body. Sensors involve a large volume, complex insulation structures, and high design costs. Typically an iron core structure is adopted. As a result, ferromagnetic resonance can occur easily during practical application. Moreover, owing to the mul...
The computation program of the transient recovery voltages that appears across the terminals of a circuit breaker, after the low inductive current has been interrupted at the disconnecting no load high voltage transformers, using the routines set developed in Matlab is presented. The computation algorithm is based on the peculiarities of operation of the transformer. The computation program has...
We have fabricated exchange-biased Co/Pt layers ((0.3 nm/1.5 nm) 3) on (0 01)-oriented Cr2O3 thin films. The multilayered films showed extremely smooth surfaces and interfaces with root mean square roughness of E0.3 nm for 10mm 10mm area. The Cr2O3 films display sufficient insulation with a relative low leakage current (1.17 10 A/cm at 380MV/m) at room temperature which allowed us to apply elec...
با توجه به نقش مهمی که عایق های الکتریکی در عایق بندی ادوات و تجهیزات فشار قوی دارند، بحث سلامت آنها در این مبحث بسیار مهم می باشد. یکی از مواردی که در عایق بندی مشکل ایجاد می نماید، وجود حفره در عایق ها می باشد که باعث کاهش توانایی عایقی می گردد. روشهای مختلفی برای شناسایی این عیب موجود می باشد. با توجه به روش های مرسوم تست غیر مخرب که بر پایه بر پایه التراسونیک استوار است، دستگاهی ساخته شد و ...
The transmission of the electric power to shore and concepts for the electrical system of offshore wind farms are evaluated with respect to selection of a cable. Necessity of use of a shunt by an AC cable connection to shore is addressed, Consequences of the use of a higher insulation of cables, use of three single core cables in triangular and linear configuration is compared in the paper.
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