A New Phase-Shifted Full-Bridge Converter With Voltage-Doubler-Type Rectifier for High-Efficiency

PDP Sustaining Power Module

By, S.RAGHU BABU

School of Computing and Electrical EngineeringBAHIR DAR UNIVERSITY

CONTENTS

FULL BRIDGE POWER SUPPLY PHASE SHIFTS PROPOSED METHOD CIRCUIT DIAGRAM EXPLAINATION OF PROPOSED SYSTEM

CIRCUIT CONTROL AND LOGIC SIMULATION RESULTS

OBJECTIVE OF PROJECT

To design & simulate a new Phase-Shifted Full-Bridge Converter with Voltage-Doubler-Type Rectifier for High-Efficiency PDP Sustaining Power Module

It regulates the output power delivered to the load by controlling the phase shift and ensures switch turn on at zero voltage by controlling the frequency.

Circuit diagram of the proposed converter.

The proposed converter, is suitable for high voltages and low-current applications

Realize high power density, high performance, and high efficiency

Comparative analysis of ZVS operation and circulating energy.(a) Conventional PSFB converter. (b) Proposed PSFB converter.

The energy that is stored in the leakage inductor is insufficient to fully charge and discharge the output capacitors of lagging leg switches at a light load.

By using both the primary current and the magnetizing current, the proposed converter has a good performance in the ZVS operation of all power switches, regardless of load conditions.

Output voltage according to variations in effective

duty ratio Deff and equivalent load resistance Ro.

Required minimum dead time for ZVS under variations in load condition and magnetizing inductance

OPEN LOOP SIMULINK SYSTEM

OPENLOOP PRIMARY CURRENT, DIODE (D1 AND D2) CURRENTS

CLOSED LOOP SIMULINK

CONTROL BLOCK

CLOSED LOOP PRIMARY INPUT VOLTAGE (V=100v)

CLOSED LOOP OUTPUT VOLTAGE (V=200v)

CONCLUSION A new PSFB converter with a voltage-doubler-type

rectifier for a high-efficiency PDP sustaining power module has been proposed in this project

The proposed converter employs a voltage-doubler-type rectifier without an output inductor.

The improved efficiency of the proposed converter demonstrates its suitability as a sustaining power module, owing to its high reliability, low noise, and high efficiency

Future Improvement

Converter can also be designed for simultaneous operation of non linear load and proposed converter.

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