This paper presents ac-dc
converter utilising current control mode to
obtain unity p.f. Many applications
demanding ac-dc converter require stable
dc voltage at the terminals with better
steady state and transient performance,
which is accomplished by boost converters.
These converter produce higher, regulated
dc output voltage and simultaneously
improving the p.f. Utilising control
techniques of current, it is observed that
input current can be made to follow input
sinusoidal voltage wave thus shaping the
input current and reducing harmonics
distortion and bringing p.f. to almost
unity. Amongst various current control
strategies hysteresis current mode in CCM
mode control is preferred. Simulation is
done in PSIM software.
Aparna Chaturvedi
M.Tech 2nd Year
Vinesh Agarwal
HOD Electrical Dept.
[1] Supratim Basu, Math H.J.Bollen and Tore
M.Undeland, "PFC strategies in Light of EN
61000-3-2", EPE PEMC Conference, Riga, Latvia,
1-3 September 2004.
[2]W.Wolfle, Hurley W.G, "Power Factor
Correction and Harmonic Filtering for AC/DC
Converters", 28th Annual IEEE
IndustrialElectronics Conference-IECON,
Vol.4,2002, pp. 3238-3243.
[3] Huai Wei, Issa Batarseh, Senior Guangyong Zhu
and Peter Kornetzky, " A Single-Switch AC– DC
Converter with Power Factor Correction", IEEE
Transactions on Power Electronics, Vol. 15, No. 3,
May 2000, pp. 421-430.
[4] Tse.C.K, "Classification And Derivation Of
Switching Power Converters With Power Factor
Correction and Output Regulation", Third
International Conference on Power Electronics
and Motion Control- IPEMC, Beijing, Vol.2, 2000.
[5]J.W.Kimball ,P.T.Krein,Y.Chen, "Hysteresis
Current and Delta Modulation Control Converters
using sensor less Current Mode"IEEE Trans. Power
Electronics,Vol.21,Issue 4,pp 1154-1158,July
2006.
[6] N.A.Rahim, J.Selvaraj, C.Krismadinata,
"Hysteresis current control of sensorless MPPT for
grid connected photo voltaic system",Proc.IEEE
,ISIE ,pp 572-577,2007.
[7] L.Rosseto, G.Spiazzi, P.Tenti, " Control
techniques for power factor correction
converters",,Department of Electrical Engineering,
Department of Electronics and
Informatics,University of Italy,pp 1-9,1994.
[8] PSIM User Manual Guide", Powersim Inc.,
May, 2001.
Aparna Chaturvedi, Vinesh Agarwal "Performance Analysis of Power Factor Correction for Converters using
Hysteresis Current Mode Control" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.1 issue 8, pp.10-14 2012
E-business is a powerful tool for business transformation to 21st
century that allows companies to enhance their supply chain
operation reach new market and improve services for customers
as well as for providers. The development and improvement of
technologies have brought success towards e-business. High
technologies attracted people misuse the technologies such as
hackers and cybercrime which they can access to e-business
privacy easily. This article examines the issues related to the
security of the assets and transactions in the e-business
components and activities. Since a large business community is
involved and public money at large invested in business, role of
information security and privacy is not blown up in this kind of
business. This article identifies the need of security, essential
components of security and their importance to protect ebusiness
from threats. Thus e-business companies should built
security circle around business entity. Company should built
security and trust to protect e-business customers which in turn
will improve e-business prospective. This paper undertake
descriptive study on security threats determining the quantum of
risk of security threats on e-business and develop a model of
total security for secure business transaction using e-business
platform.
Bijender Singh Yadav
Research Scholar, JJT University Chudela (Jhunjhunu), India
[1]B. Dahlbom, Postface, Oxford University Press, 2001.
[2] Burns S 2002 Unique Characteristic of e-commerce and
their effect upon payment system Ver. 1.3
[3] Computer Insecurity Springer Verlag, London 2005
[4] Majumdar C Barik MS, Das S 2003 Final technical report
for project development.
[5] N. Jarvis, E-commerce and encryption: Barriers to growth,
Computers & Security 18 (1999), no. 5, 429-431.
[6] P. Jungck and S. Shim, Issues in high speed Internet security,
Computer 37 (2004), no. 7, 36-42.
[7] S. Katsikas, J. Lopez, and G. Pernul, Trust, privacy and
security in e-business: Requirements and solutions, Lecture
Notes in Computer Science 3746 (2005),548-558.
/
Bijender Singh Yadav "Electronic Business Security Model (EBSM)" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.1 issue 8, pp.19-26 2012
