نتایج جستجو برای: power density
تعداد نتایج: 865915 فیلتر نتایج به سال:
Background and Objectives: Due to the increasing use of mobile phone in recent years, the number of BTS antennas has also increased. .Proliferation of BTS antennas in cities and villages, and perpetuation of encountering with waves from one side and increasing the anxiety of many people in encountering with their waves from the other side convinced more investigations in this field. Therefore,...
Permanent magnet motors have some advantages such as high power density, high efficiency and good thermal characteristic and are used in many industrial applications. The aim of this paper is to present the optimal design and fabrication of a counter rotate brushless permanent magnet motor for using In under water systems. Due to the motor space limitations and lack of heat transmission with th...
Background and objectives: In recent decades, progress of telecommunication industry resulted in public availability to cost-effective cellular mobile hence, boom of base stations of cellular mobile in response to vast public demands. Base stations of cellular mobile are specific source of microwave production in a certain frequency in environment. Antennas are installed on high towers to creat...
In recent days, power density has become an important and increasingly universal figure of merit of power supply and power system innovation and performance. Achieving high power density implies the utilization of the latest topological advances in power conversion, employing state−of−the−art control methods and using the best semiconductor technology available for the designer. This paper outl...
Although most noise reduction algorithms are critically dependent on the noise power spectral density (PSD), most procedures for noise PSD estimation fail to obtain good estimates in nonstationary noise conditions. Recently, a DFT-subspace-based method was proposed which improves noise PSD estimation under these conditions. However, this approach is based on eigenvalue decompositions per DFT bi...
Permanent Magnet Synchronous Motors (PMSMs) have been widely used in many industrial applications. In This paper a new method for multi objective optimal design of a permanent magnet synchronous motor (PMSMs) with surface mounted permanent magnet rotor is presented to achieve maximum efficiency and power density using a Bees algorithm for industrial applications. The objective function is a...
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