نتایج جستجو برای: zsi
تعداد نتایج: 139 فیلتر نتایج به سال:
In this paper multi-input Cuk- derived buck-boost inverter is presented based on Model Predictive Control (MPC). The control technique applied to multi- input because of the several features such as reduction passive elements compared with two-stage topologies and family impedance inverters Z-source Inverter (ZSI), Quazi Source Inverter(QSI), T-Source (TSI), Y-Source (YSI) .in addition , it sui...
This paper proposes the Modified Switched Inductor Quasi Z Source Inverter (MSL-QZSI) for extracting maximum solar power generation. The Z source inverter uses LC impedance network to couple the main converter circuit to the power source, which provides the boosting of input voltage. It is not possible in traditional voltage-source inverter (VSI) and current-source inverter (CSI). The proposed ...
In the renewable energy sources, PV system forms the reliable for power generation. Thus the transformerless CMI is considered to be the best alternative for low cost and high efficiency photovoltaic systems. Eliminating the leakage current is one of the most important issues for transformerless inverters in grid-connected photovoltaic system applications, where the technical challenge is how t...
The field of robotics employs a vast amount of coupled sub-systems. These need to interact cooperatively and concurrently in order to yield the desired results. Some hybrid algorithms also require intensive cooperative interactions internally. The architecture proposed lends itself amenable to problem domains that require rigorous calculations that are usually impeded by the capacity of a singl...
Climate change is adversely affecting the development, management, and planning of surface groundwater resources. The meteorological drought becomes a severe natural problem, it can occur in any climatic region world. Thus, monitoring minimizing crucial for analyzing predicting impacts. considered basin or region-specific since atmospheric conditions are highly variable from to region. However,...
Leonardo Fea, an Italian explorer and traveler, sampled a comprehensive collection of continental Mollusca during his travels throughout the former British Burma (currently Myanmar) in 1885-1887. Cesare Maria Tapparone-Canefri, malacologist, studied this sample published paper with description numerous terrestrial freshwater molluscan taxa new to science. This was partly deposited Museo Civico ...
تعادل آب حوضه ها و دریاچه ها در بسیاری از مناطق ایران به ویژه مناطق خشک و نیمه خشک تحت تاثیر شرایط رطوبتی و بارش قرار دارد. در سال های اخیر به علت افزایش فراوانی خشکسالی ها، روند رو به رشد تغییر اقلیم و دخالت انسان در بوم سامانه طبیعی، سطح آب دریاچه ها به ویژه در این مناطق به طور چشم گیری کاهش یافته است و افزون بر آسیب های زیست محیطی، بخش های اقتصادی و اجتماعی جامعه را نیز با چالش روبه رو کرده ...
در این پژوهش با بهرهگیری از دادههای ایستگاهی و شبکهبندی شده و با استفاده از شاخص استاندارد شده Z (ZSI)، دورههای خشک و مرطوب سواحل جنوبی دریای خزر شناساییشد. سپس موقعیت هستههای مرکزیپرارتفاعبرایدورههای منتخب در ترازهای زیرین جو استخراج،و نقشه پراکنش آن ترسیم شد. نتایج نشان داد در دوره خشک، موقعیت هستهها در عرضهای جغرافیایی پایین در محدوده بین 35 تا 55 درجه شمالی است. قویترین هستهها در ...
Introduction: Drought is recognized as a slow, creeping phenomenon that can accelerates the expansion of desertification in different regions especially in arid and semi-arid area with its effect on the agricultural sectors, water resources and vegetation cover. Positioning of Iran in the world arid and semi-arid belt is exposed to drought and water crisis and desertification. Drought monitorin...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید