نتایج جستجو برای: dc machinery

تعداد نتایج: 87975  

Journal: :Applied sciences 2023

Hybrid fuel cell powertrains are a promising strategy to reduce the environmental impact of vehicles and non-road mobile machinery. To preserve state-of-health cells, an energy storage system with sufficient power capacity, such as ultra-capacitors or batteries, should be introduced in help during sudden abrupt changes demands. However, presence two more sources necessitates development managem...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده برق 1394

در این پایان نامه یک ساختار جدید برای مبدل dc-dc دوطرفه با نسبت تبدیل بالا همراه با قابلیت حذف ریپل جریان ارائه شده است. گین این مبدل در حالت انتقال توان از ورودی به خروجی افزاینده و در حالت انتقال توان از خروجی به ورودی کاهنده خواهد بود. مبدل پیشنهادی در دو طرح مختلف ، یکی به همراه سلف معمولی و دیگری به همراه سلف کوپل در دو مود هدایتی جریان پیوسته و گسسته مورد تحلیل و بررسی قرار گرفته و رابطه ...

2014
Amir Mahmood Soomro Shahnawaz Farhan Khahro Shahnawaz Talpur Liao Xiaozhong Farhan Manzoor

This paper explores a configuration for boost half bridge DC-DC converters, connected in parallel at the input and series at the output, such that the converters share the input current and load voltage equally. A stable control scheme has been developed to achieve this objective. In order to verify the effectiveness and stability of control scheme, input-parallel output-series (IPOS) connected...

Journal: :Journal of immunology 2006
Deborah Braun Laurent Galibert Toshiharu Nakajima Hirohisa Saito Van Vu Quang Manuel Rubio Marika Sarfati

CD47 on live cells actively engages signal-regulatory protein-alpha (SIRP-alpha) on phagocytes and delivers a negative signal that prevents their elimination. We evaluated the biological consequences of SIRP-alpha ligation on the dendritic cell (DC) response to maturation signals and the potential interplay with the IL-10/IL-10R inhibitory pathway. At first, CD47/SIRP-alpha allowed the generati...

Journal: :international journal of mathematical modelling and computations 0
noureddine bouarroudj unité de recherche appliquée en energies renouvelables, uraer, centre de développement des energies renouvelables, cder, 47133 ghardaïa, algeria algeria d. boukhetala b. benlahbib b. batoun

the aim of this paper is to design a fractional order sliding mode controllers (fosmc)for a class of dc-dc converters such as boost and buck converters. firstly, the control lawis designed with respect to the properties of fractional calculus, the design yields an equiv-alent control term with an addition of discontinuous (attractive) control law. secondly, themathematical proof of the stabilit...

2014
Alexander Weinert

In this paper I will present a summary of Turing’s article “Computing machinery and intelligence” [26] and discuss it. I retrace the ideas Turing presented in this paper and explain their historical context. Also, I discuss the impact Turing’s ideas had on the scientific community when the paper was published in 1950 as well as the meaning they still have today. Throughout this paper, I include...

Journal: :IEEE Trans. Industrial Electronics 2011
Xinke Wu Guichao Hua Junming Zhang Zhaoming Qian

A new synchronous rectifier (SR) driving method is proposed using primary current sensing in this paper. Because the magnetizing current of transformer is included in primary winding of transformer, it can’t be used to generate the driving signals of SRs directly. A current compensating winding in current transformer is used to cancel out the magnetizing current and generate suitable driving si...

2011

This paper presents an approach for teaching and learning dc-dc converter design using MathCAD. MathCAD provides advantages that greatly improve teaching and learning process especially when long and complicated design equations are involved such as those found in dc-dc converters. A design example using Excel is presented and then compared with the same example using MathCAD. Experience learne...

Journal: :IEICE Electronic Express 2012
Hosein Mirmazhari Abouzar Taghizadeh Jafar Sobhi Ziaddin Daei Koozehkanani

In this paper, a new in-package high efficiency voltage down converter (VDC) is presented. Usually, quality factor of inductors is the main problem for generating high efficiency DC-DC Converters. In order to mitigate this problem, Bonding Wires with a new form are exploited in which four mutual inductions of bonding wire are used to increase the total inductance. This technique provides a high...

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