نتایج جستجو برای: dc بوست
تعداد نتایج: 55801 فیلتر نتایج به سال:
Single phase power factor correction ac-dc converters are widely used in industry for ac-dc power conversion from single phase ac mains to an required output dc voltage. In case of high power application these types of converter use an ac-dc boost converter followed by dc-dc converter. These converters has the features of excellent input power factor, continuous input and output currents, and i...
The class of Deterministic Conditional Term Rewriting Systems (DCTRSs) is of utmost importance for the tight relationships exhibited with functional programming, logic programming and inductive reasoning. However, its analysis is extremely diicult, and to date there are only very few works on the subject, each analyzing a particular aspect of DCTRSs. In this paper, we perform a thorough analysi...
This paper presents a new method for theoretical stability analysis of a bidirectional dual full bridge DC-DC converter with triple phase-shift control. The developed approach is analytically sound and generally applicable when compared with the existing approaches, which are by and large based on computer simulation. The operating process of a bidirectional converter is multi-stage and nonline...
. The aim of this paper is to present an overcurrent limitation for the digital peak current mode dc-dc converter. The proposed method can detect the overcurrent in real time and it also maintains arbitrary current in the overcurrent limitation mode. It is expected to provide an effective function to protect the renewable energy system. The effectiveness of proposed method is confirmed from bot...
The DC-DC converter topologies have received increasing attention in recent years for high power and high performance applications. The advantages of DC-DC boost converters include increased efficiency, reduced size, reduced electromagnetic emission, faster transient response, and improved reliability. The front end inductors in a boost converter are magnetically coupled to improve electrical p...
Switched circuits in power electronics by their nature present hybrid behavior. Such circuits can be described by a set of discrete states with associated continuous dynamics. A control objective, usually regulation of the output in the face of disturbances in the continuous system, is accomplished by choosing among discrete states. We describe a hybrid systems perspective of several common tas...
⎯ A thermoelectric energy scavenging microsystem is proposed, optimized to convert the small thermal power available in human-body applications. A Lithium solid-state thin-film battery is integrated in the same device as well as the ultra low-power electronics to charge battery and perform DC-DC conversion.
Dc-dc converters suitable for use in battery-powered electronic equipment with energy management are discussed. To realize the benefits of energy management, these converters must be capable of maintaining regulation of their output voltages at no load, while maintaining high efficiency. Variable frequency operation is shown to give an improvement in efficient operating range of approximately t...
سیستم های قدرت فعلی اساساً به سوخت های فسیلی تجدیدناپذیر وابسته بوده که علت اصلی آلودگی محیط زیست و تغییرات آب و هوائی هستند. بخاطر این مشکلات و کاهش تدریجی منابع نفت خام، پیدا کردن جایگزین مناسب ضروری به نظر می رسد. اتصال چند واحد تولید مقیاس کوچک به سیستم های توزیع فشارضعیف به نوعی از سیستم قدرت انجامید که ریز شبکه نامیده می شود. ریزشبکه ها در دو نوع ac و dc می باشند. برای فشرده سازی و کاهش هز...
acute myeloid leukemia (aml) is a type of poor prognosis hematological malignancies characterized by heterogeneous clonal expansion of myeloid progenitors. leukemic stem cells are thought to form the majority of a cell population in minimal residual diseases (mrds) which are resistant to current chemotherapeutic regimens and mediate disease relapse. current therapeutic vaccine strategies have d...
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