Dr Kosala Gunawardane

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Lecturer

Phone: +64 9 921 6134

Email: kosala.gunawardane@aut.ac.nz

Physical Address:
AUT University
WZ Building, Level 4, Room 410
34 St Paul Street
Auckland Central
Auckland

Postal Address:
Auckland University of Technology
School of Engineering, Computer and Mathematical Sciences
Private Bag 92006
Auckland 1142
Auckland

Qualifications:

PhD (Waikato)

BSc (Hons) Engineering- (University of Moratuwa)

Memberships and Affiliations:

IEEE Member

Teaching Areas:

Electrical Engineering Principles

Circuit Theory

Engineering Projects

Research Areas:

Analog circuit design

Power electronics

Supercapcacitor-based applications

Low-Dropout regulators

Current Research Projects:

Supercapcacitor assisted low dropout (SCALDO) regulators

Publications:

Journal Papers

[1]  K. Kankanamge-Gunawardane and N. Kularatna, ‘Improving the end-  to-end efficiency of DC-DC converters based on a supercapacitor assisted low dropout regulator (SCALDO) technique” Transactions on IEEE Industrial Electronics, March 2013 , vol.61, Issue 1, pp. 223 - 230.

 

[2]  K. Kankanamge-Gunawardane , N. Kularatna, and D. Alistair Steyn-Ross, ‘Laplace Transform-Based Theoretical Foundations and Experimental Validation-Low Frequency Supercapacitor Circulation for Efficiency Improvements in Linear Regulators, Transactions on IET Power Electronics, Nov 2012, Vol. 5, Iss. 9, pp. 1785–1792.

                                 

Book Chapters

[1]  K. Gunawardane, Capacitors as energy storage devices—simple basics to current commercial families , Chapter 4 (Ed) N. Kularatna (2015): Energy Storage Devices for Electronic Systems, Elsevier, USA.

 

[2]  K. Gunawardane, Supercapacitor as a lossless dropper in DC-DC converters, Chapter 6 (Ed) N. Kularatna (2015): Energy Storage Devices for Electronic Systems, Elsevier, USA

 

[3]  K. Kankanamge-Gunawardane, Control Loop Design of DC-to-DC Converters, Chapter 5 (Ed) N. Kularatna (2011): DC power supplies, power management and surge protection for power electronics systems, FL, USA, CRC Press

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Conference Papers

 [1]   K. Kankanamge-Gunawardane , N. Kularatna, Supercapacitor assisted LDO (SCALDO) technique- an extra low frequency design approach to high efficiency DC-DC converters and how it compares with the classical switched capacitor converters, 28th IEEE Applied Power Electronics Conference, March 2013, California, USA.

 

[2]   J. Fernando, N. Kulatana, K. Kankanamge-Gunawardane,  "Indirect applications of supercapacitor energy storage capabilities and characterisation required," 2013 IEEE International Symposium on Industrial Electronics (ISIE),  Taipei, Taiwan, pp.1-6, May 2013

 

[3]   K. Kankanamge-Gunawardane , N. Kularatna, Implementation aspects of a new linear regulator topology based on low frequency supercapacitor circulation, 27th IEEE Applied Power Electronics Conference 2012, Florida, USA, pp. 2340 – 2344.

 

[4]   K. Kankanamge-Gunawardane , N. Kularatna, and D. Alistair Steyn-Ross, Laplace Transform-Based Theoretical Foundations and Experimental Validation-Low Frequency Supercapacitor Circulation for Efficiency Improvements in Linear Regulators , 37th IEEE Industrial Electronics Conference, Melbourne, Australia, November 2011, pp. 3974-3979.

 

[5]   N. Kularatna, J. Fernando, K. Kankanamge-Gunawardane , and X. Zhang, A low frequency supercapacitor circulation technique to improve the efficiency of linear regulators based on LDO ICs, 26th IEEE Applied Power Electronics Conference, Texas, USA, 2011, pp. 1161 – 1165.

 

[6]   N. Kularatna, J. Fernando, K. Kankanamge-Gunawardane , and L. Tilakaratna, Very low frequency supercapacitor techniques to improve the end-to-end efficiency of DC-DC converters based on commercial off the shelf LDOs, 36th IEEE Industrial Electronics Conference, 2010, pp. 721 – 726.

 

 

Magazine Articles

 

[1]  N. Kularatna, K. Kankanamge-Gunawardane , and J. Fernando, ‘Supercaps improve LDO efficiency-Part 1: Low noise linear supplies’, Power Electronics Technology Magazine, USA, April 2011, pp.14-17.

 

[2]  N. Kularatna, K. Kankanamge-Gunawardane , and J. Fernando, Supercaps improve LDO efficiency-Part 2: Implementation’, Power Electronics Technology Magazine, USA, May 2011, pp.30-33.