semina lphf frnt.docx

8/20/2019 semina lphf frnt.docx

1/8

LOW POWER HIGH FREQUENCY SWITCH-MODE

POWER SUPPLY WITH 50V INPUT-5V OUTPUTS

SEMINAR REPORT

Submitted by

AJITH BALAKRISHNAN

Submitted in partial fulfillment for the award of the Degree

Of

MASTER OF TECHNOLOGY

IN


2/8

[Type text]

POWER ELECTRONICS

AWH ENGINEERING COLLEGE

CALICUT

2015

AWH ENGINEERING COLLEGE, CALICUT

DEPARTMENT OF ELECTRICAL ELECTRONICSENGINEERING

BONAFIDE CERTIFICATE

This is to certify that the seminar report entitled ‘ LOW POWER HIGH

FREQUENCY SWITCH-MODE POWER SUPPLY WITH 50V


3/8

[Type text]

INPUT-5V OUTPUT’ being submitted by AJITH BALAKRISHNAN , in

partial fulfillment of the requirement for the degree of Master of Technology in

Power Electronics under KTU is a bonafide record of the seminar presented by

him under our guidance and superision!

Guided By

Mr. Rohith.K Mrs. Fathima

Sapna Assistant Professor AssociateProfessor H.!." "ept. of### "ept. of ###

A$H #n%%. &o''e%e A$H #n%%.&o''e%e

ACKNOWLEDGEMENT

I express my sincere and heartfelt gratitude to M!" R#$%&$ K , Assistant

Professor of EEE department for his help, valuable suggestions and guidance in

the preparation of this seminar.

I also express my sincere thanks to M!'" F(&$%)( S(*+(, Associate

Professor and Head of Electrical and Electronics Engineering department for

extending the moral support.

I ould also like to express my sincere thanks to my parents, friends and

above all, !od Almighty for giving me the strength, courage and blessings in the

successful completion of this seminar.


4/8

[Type text]

ABSTRACT

A sitch"mode poer supply is an electronic poer supply that transfers

poer from a source to a load. In an #$P#, the pass transistor continually

sitches beteen lo"dissipation, full"on and full"off states, spending very little

time in the high dissipation transitions, hich minimi%es the asted energy. &hen

the fre'uency is increased to the (H) range, the dissipated energy gets higher,

ruining the efficiency. Hence, in order to reduce the sitching losses and to

increase the sitching fre'uency, ithout compromising for the efficiency, ne

topologies had to be invented. *his leads to the development of resonant

converters. *his paper presents the design of such a resonant converter ith a

sitching fre'uency in the very high fre'uency range +--- $H%/, a large step

don ratio +ten times/, and lo output poer +0 &/.#everal different inverters and

rectifiers are analy%ed and compared. *hree different poer stages are

implemented1 one ith a large input inductor, one ith a sitch ith small

capacitances, and one ith a sitch ith lo on"resistance. *he poer stages are

designed ith the same specifications and efficiencies from 2-.345.67 have been

achieved.

https://en.wikipedia.org/wiki/Power_supplyhttps://en.wikipedia.org/wiki/Dissipationhttps://en.wikipedia.org/wiki/Dissipationhttps://en.wikipedia.org/wiki/Power_supply


5/8

[Type text]

CONTENTS

C$(*&! P( N#"

8I#* O) )I!9:E# i

8I#* O) *A;8E# ii

0. I*IO< 0

5. #&I*>H $O=E PO&E: #9PP8? 5

5.0 *heory of operation @

5.5 Advantages and =isadvantages 3

5. Applications 3

. :E#O


6/8

[Type text]

. :E#Olass =E Inverter 5

.@ #election of Inverter 54

2. PO&E: #*A!E# 56

2.0 $O#)E* ith 8o >O## -

2.5 $O#)E* ith 8o : O


7/8

[Type text]

2 >lass =E :ectifier

0

3 Class DE Rectifer waveorms simulated with PLECS

02

4 >lass E Inverter

06

6 >lass E Inverter aveforms simulated ith P8E>#

55 0- >lass E)5 Inverter

5

00 >lass "5 Inverter aveforms simulated ith P8E>#

5@05 >lass =E Inverter

5

0 Class DE iverter waveorms simulated with PLECS

!"

#$ $easurements on the prototype ith lo # O##

-

0 %easuremets o the #&'() prototype with *R+',-!

(!

02 Achieved (5I< .f # PO9* actor and $ next to previous results


8/8

[Type text]

LIST OF TABLES

T(/ N# T(/ N() P(

+.)!

0 :esults from previous research

0-

5 :elation beteen fre'uency and efficiency for converter

00

>omparison of :ectifier topologies

03

@ >omparison of Inverter topologies

54

Documents

semina lphf frnt.docx