i want to know the circuit diagram for zero voltage switching resonant dc page link inverter using auxilary boost converter and also the logic to turn on the switches.please help me finding the solution ....etc

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A Soft-Switching DC/DC Converter With High Voltage Gain


I. INTRODUCTION
RECENTLY, the demand for dc/dc converters with high
voltage gain has increased. The energy shortage and the
atmosphere pollution have led to more researches on the renewable
and green energy sources such as the solar arrays and the
fuel cells . Moreover, the power systems based on battery
sources and supercapacitors have been increased. Unfortunately,
the output voltages of these sources a ....etc

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AUTOMATIC SWITCHING OF MOBILE PHONE PROFILE BASED ON CURRENT SPEED OF THE VECHILE

A method of automatically switching a profile of a mobile phone comprising a)Measuring the current speed of the vehicle in mobile phone b) compare the current speed with predefined threshold speed c) switching of profile of the mobile based on the comparison result obtained from step b.
The current speed of the vehicle can be obtained either by using GPS speedometer which nowadays comes as inbuilt application in modern mobile phones or by ....etc

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Introduction
The zero-cross family of optically isolated triac drivers is an inexpensive, simple and effective solution for interface applications between low current dc control circuits such as logic gates and microprocessors and ac power loads (120, 240 or 380 volt, single or 3-phase). These devices provide sufficient gate trigger current for high current, high voltage thyristors, while providing a guaranteed 7.5 kV dielectric withstand voltage between the line and the control circultry. An integrated, ze ....etc

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AIM:

Aim Of the Project Is Get the Energy From non conventional Energy Source To Convert 400v 3phase Energy. Using 3phase Zv ZC Switching Dc-Dc Convert For Fuel Cell Application.

ABSTRACT:
In spite of having many advantages, such as low
switch voltage and easy implementation, the voltage-fed dc dc
converter has been suffering from problems associated with large transformer leakage inductance due to high transformer turn ratio when it is applied to low-voltage, high-current ste ....etc

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High-voltage direct current



A high-voltage, direct current (HVDC) electric power transmission system uses direct current for the bulk transmission of electrical power, in contrast with the more common alternating current systems. For long-distance transmission, HVDC systems may be less expensive and suffer lower electrical losses. For underwater power cables, HVDC avoids the heavy currents required by the cable capacitance. For shorter distances, the higher cost of DC conversion equipment compared to an AC system m ....etc

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Abstract
This paper presents an analytic current model for capacitively coupled Single-Electron Tunneling Transistors (SETTs) that is based on a modified M-state steady-state master equation. Based on this current model we also derive a current noise model for SETT. To validate the proposed models we calculate their characteristics at different device parameters and different operation temperatures and compare them with the corresponding characteristics calculated by the full master equation method. The results indicate that the propos ....etc

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name dinesh
mini projet report
Voltage source inverters (VSI) have been widely used in uninterruptible power supplies, unified power flow controllers or unified power quality conditioners, and distributed generation systems (DGS). VSIs are inherently efficient, compact, and economical devices used to control power flow and provide quality supply. VSIs can be classified as voltage-controlled VSIs (VCVSIs) and current-controlled VSIs (CCVSIs), depending on their control mechanism. In this paper, a detailed comparison of VCVSIs and CCVSIs for DG ....etc

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plzz need sme previous question pprs of ehv
plz help me.. ....etc

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ZERO VOLTAGE SWITCH

A zero voltage switch (ZVS) DC link, single-phase, pulse width-modulated
voltage source inverter (VSI) is proposed. Operating principle and various operating
intervals of the converter are presented and analyzed. Design consideration is
discussed and a design example of experimental results from a laboratory model is
also presented.
In proposed ZVS DC page link technique, the switch voltage is clamped to the dc
link voltage and PWM scheme can be used to control the inverter output v ....etc

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