نتایج جستجو برای: loss reduction
تعداد نتایج: 903118 فیلتر نتایج به سال:
<p class="papertitle">This paper presents Dynamic Membrane Evolutionary Algorithm (DMEA) has been applied to solve optimal reactive power problem.Proposed methodology merges the fusion and division rules of P systems with active membranes adaptive differential evolution (ADE), particle swarm optimization (PSO) exploration stratagem. All elementary are amalgamated into one membrane in comp...
The loss of distribution networks caused by various electrical motors including transformers and generators can significantly affect the efficiency economical operation power grid, especially for new systems with high penetration renewable energies. In this paper, potential using an energy storage system (ESS) reduction is investigated, where a novel two-stage method key-bus selection ESS sched...
Clean and sustainable renewable energy technology is going to take responsibility of energy supply in electrical power systems. Using renewable sources improve the environment and reduce dependence on oil and other fossil fuels. In distribution power system, utilizing of wind and solar DGs comprises some advantages; consist of loss and emission reduction, and also improvement of voltage profile...
In power systems, reconfiguration is one of the simplest and most low-cost methods to reach many goals such as self-healing, reliability improvement, and power loss reduction, without including any additional components. Regarding the expansion of distribution networks, communications become more complicate and the number of parameters increases, which makes the reconfiguration problem infeasib...
. فیلتر پیشنهادی دارای فرکانس قطع db 3- در 2.38 ghz و باندگذر این فیلتر، از باند عبور به باند قطع که معمولاً از فرکانس قطع db 3- تا فرکانسی که در آن میزان تضعیف به db 20- میرسد برابر با ghz 0.45است. باند قطع این فیلتر با میزان تضعیف db 21- از ghz 2.5 تا23.5ghz است. insertion loss در باند عبور کمتر از db 0.1 و return loss در باند عبور بهتر از db 16. 9- و در باند قطع نزدیک به 0 db میباشد که نشا...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
approximately 20% of the incidence of cancers are caused by obesity. there have been several studies showing that weight loss, through calorie reduction and increased exercise, can potentially reduce the risk of cancer in obese people. but currently other special methods such as anti-obesity drugs or bariatric surgeries are used for intentional weight loss. whether such intentional weight loss ...
translation as a comunicative process is always said to be associated with various aspects of meaning loss or gain. subtitling as a mode of translating, due to special discoursal and textual conditions imposed upon it, is believed to be an obvious case of this loss or gain. presenting the spoken sound track of a film in writing and synchronizing the perception of this text by the viewers with...
Background: Reconstructions of acute acromioclavicular (AC) dislocations have been thought to result in superioroutcomes than chronic dislocations. The use of tendon graft in reconstructions has demonstrated favorablebiomechanical properties. To determine whether utilizing tendon graft during repair of acute AC dislocations results insuperior outcomes and lower complication ra...
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