نتایج جستجو برای: z h converter

تعداد نتایج: 677090  

This paper presents a modified nine switch inverter with two inputs and two Z-source networks. This inverter has two DC inputs and two AC outputs. Input DC voltages can be boosted to the required level. Amplitude, frequency and phase of AC output voltages can be controlled, independently. The proposed converter can be used in applications with two unregulated DC sources, which require feeding ...

This paper introduces a novel two transistors forward topology employing a z-source to achieve ZVZCS and power transformer resetting for various applications. Comparing with the forward converter, this topology has the advantage of displaying ZCS condition with an added Z-Source and no additional switches when the switches turn on, and that ZVS condition happens when the switches turn off. Duty...

2013
A. Gopi R. Saravanakumar

Abstract: This paper proposed a new type of converter called Single Phase Switched Inductor Z-source Matrix Converter (SLMC). It is an ac-to-ac converter with diode bridge bidirectional switch cell. The limitations of existing matrix converter like voltage regulation and quality output issues are overcome in the proposed SLMC by adding the switched inductance. The simulation is performed for di...

2006
MOHAMMADREZA RAFIEI REZA GHAZI RADJAB ASGHARIAN HAMID A. TOLIYAT

In this paper, a comparative study on the subject of robust control of dc/dc PWM converters is presented. Considering a wide range of possible changes for the converter’s operating conditions, robust control of dc/dc PWM converters using some state of the art robust controllers i.e., ∞ H , μ , and fuzzy controllers is studied. The system under study is a CUK converter as a non-linear, variable ...

Journal: :Applied optics 2000
V R Daria C Saloma

We demonstrate a new technique for performing accurate Fourier transform interferometry with a 1-bit analog-to-digital (AD) converter that does not require oversampling of the interferogram, unlike in other 1-bit coding schemes that rely on delta-sigma modulation. Sampling aims at locating the intersections {z(i)} of the modulation term s(z) of the interferogram and a reference sinusoid r(z) = ...

‎Complex-valued harmonic functions that are univalent and‎ ‎sense-preserving in the open unit disk $U$ can be written as form‎ ‎$f =h+bar{g}$‎, ‎where $h$ and $g$ are analytic in $U$‎. ‎In this paper‎, ‎we introduce the class $S_H^1(beta)$‎, ‎where $1<betaleq 2$‎, ‎and‎ ‎consisting of harmonic univalent function $f = h+bar{g}$‎, ‎where $h$ and $g$ are in the form‎ ‎$h(z) = z+sumlimits_{n=2}^inf...

2013
Viktor Beldjajev Indrek Roasto Janis Zakis

The paper analyzes the impact of the component losses on the efficiency of the novel DC/DC converter. The converter is a combination of the quazi-Z-source (qZS) network and dual active bridge (DAB). In the analysis the mathematical loss models of the proposed DC/DC converter are derived and efficiency is estimated. Eventually the efficiency is verified experimentally.

Z-Source converter or impedance-source converter is a kind of power converters, which has the responsibility to convert the direct current to alternative current. This converter with respect to its circuit diagram acts as a buck-boost converter except it doesn’t use from DC-DC converter bridge. Γ-source inverters are one of the conventional converters based on impedance-sources; which have been...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1376

فرض کنید h یک مجموعه ناتهی و p*(h) مجموعه زیر مجموعه های ناتهی h باشد. در این صورت ابر عمل در h، تابعی است از h2 به p*(h). مجموعه h همراه با ابرعمل یک ابر گروهوار نامیده می شود. ابرگروهوار > و <h یک ابر گروه است اگر و تنها اگر x h:x hhh x (تکثیرپذیری) و x, y, z, h, x (y z)(x y) z (شرکت پذی یری) در یک -hv ساختار به عنوان مثال -hv گروه، برای ابرعمل، شرایط ضعیف تری در نظر گرفته می شود. به عنوان مث...

1999
Arkadiy Kats Gregory Ivensky Sam Ben-Yaakov

Abs t rac t -The phys ica l s ize of inductors in resonant converters was examined i n terms o f inductor t o transformer s i z e rat io . F o l l o w i n g the general d i scuss ion o f the i s s u e , the inductor s i z e i n ser i e s resonant DC-DC converter i s examined i n deta i l . It i s shown that the inductor t o transformer s i z e rat io i s a funct ion of the peak v o l t a g e o ...

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