a new single phase soft switching power factor correction converter ppt ....etc

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Introduction to Pulse Width Modulation (PWM)
In this technique several pulses are produced in each half – cycle but the width of the pulses
is not the same as in case of multiple – pulse width modulation, however the width of each pulse is
varied in accordance with the amplitude of the sine wave reference voltage. The width of the pulse
at the center of the half – cycle is maximum and decreases on either side. The figure 6(a) shows the
generation of the output signal by comparing a sinusoidal reference sign ....etc

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A Single-Stage PV Module Integrated Converter Based on a Low-Power Current-Source Inverter
Abstract—
This paper presents a transformerless three-phase
inverter designed for the integration into a special type of a
photovoltaic (PV) module, which is capable of providing an output
voltage of several hundred volts. The chosen topology, a currentsource
inverter, features a single-stage power conversion system
that directly feeds into the grid. The principle operation and control
is described, and a modified modulation strat ....etc

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Abstract
A new zero-voltage-switching (ZVS) control approachis presented for pulsewidth modulation (PWM) buck convertersunder discontinuous conduction mode (DCM)/continuousconduction mode (CCM) boundary. This proposed technique compensatesfor control circuit delay, and hence, turns on power MOSat the instant exactly when drain-to-source voltage becomes zero.No complicated timing calculation circuits or additional externalcomponents are required. This proposed integrated ZVS controlcan be applied to other dc–dc converters as well. The ....etc

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i need full info about this topic ....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, ....etc

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ABSTRACT

This paper presents a new 3-level, single-phase, pulse width modulated (PWM), boost-integrated acto- dc series resonant converter (SRC) with high frequency transformer isolation. This converter uses a new gating scheme suitable for integrating boost converter and PWM 3-level dc-to-dc SRC converter with above resonance operation. Principle of operation and different operating modes are presented with analysis. Based on the analysis design example of a 1 HP, 280 V, 50 kHz ac-to-dc series resonant conv ....etc

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Implementation of Full-Bridge Current-Fed Resonant Boost Converter using PIC microcontroller
ABSTRACT
This paper presents a current-fed full-bridge boost DC-ACDCconverter with transformer isolation operating withoutswitching power dissipation. The output voltage is regulatedby dc-ac converter whose frequency changes with a constantturn-off time of transistors. The proposed converter is devoidof parasitic oscillations, as all of the parasitic capacitancesand inductances are included in a resonant tank circuit. Themain advantage of such ....etc

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please give the ppt and pdf of the seminar topic single phase soft switching power factor correction converter ....etc

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Current-Fed Resonant Full-Bridge Boost DC/AC/DC Converter
INDIRECT dc/ac/dc converters utilizing an isolation transformer
are widely used in different applications, such as
battery chargers and dischargers, uninterruptible power systems,
alternative energy systems, hybrid electric vehicles, and
medical X-ray imaging.
In the case of the applications where low input voltages have
to be converted to high output voltages, current-fed converters
are used, whereas in the case of higher power applications, fullbridge
boost conv ....etc

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