Dr.Rathnayake.jpg

Dr. K.B.N. Ratnayake

(Nimal)

Senior Lecturer

PhD : Rensselaer Polytechnic Institute, USA.
MSc : Rensselaer Polytechnic Institute, USA.
BSc : Faculty of Engineering, University of Peradeniya.

Department of Electrical & Electronic Engineering

Faculty of Engineering

University of Peradeniya

Sri Lanka

ABOUT ME

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EDUCATIONAL QUALIFICATIONS

  • PhD : University of Rensselaer, USA.
  • MSc : University of Rensselaer, USA
  • BSc : Faculty of Engineering, University of Peradeniya


Publications


Latest Refereed Journal Papers

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Ratnayake K. R. M. N., Murai Y., “A Novel Carrier PWM Scheme to Reduced Common-mode Voltage in Multi-Level Inverter”, The Transaction of The Institute of Electrical Engineers of Japan( A Publication of Industry Application Society), Vol. 120-D, No. 3, 200, pp.342-350.

1950-1955

Ratnayake K. R. M. N., Murai Y. Watanabe T., “A Novel PWM Scheme to Control Reduced Neural Point Voltage Variation in Three-Level Voltage Source Inverter”, IEEE-IAS’99 Conference Record, pp.1950-1955.

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Ratnayake K. R. M. N., Murai Y., “A Novel PWM Scheme to Eliminate Common-mode Voltage in Three-Level Voltage Source Inverter”, IEEE-PESC’98 Conference Record, pp.269-274.

2005

Ratnayake K. R. M. N., Murai Y., “Study of Leakage Current Reduction Techniques and Their Suitability for Three-Level High Power Inverter Applications”, IEEE-PESC’98 Conference Record, pp.1456-1462.

2000

Ratnayake K. R. M. N., Isikawa H., Wang D., Yoshida M., Watanabe T., “Novel Hybrid Five Level Inverter”, IEEJ-IPEC’2000 Conference Record, pp.2025-2028.

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Ratnayake K. R. M. N., Wang D., Yoshida M., Watanabe T., Murai Y., “Selective Harmonic Eliminated PWM Scheme for a Common-mode Voltage Minimized in Three-Level Voltage Inverter System”, IEEJ-IAS’99 Conference Record, 241( pp.81-86).

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Ratnayake K. R. M. N., Abeyratne S.G., Murai Y., “Comparative Study of Device Losses and Stress in Resonant Power Converters”, The Publication of The Institute of Electrical Engineers of Japan , SPC-95-43.

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Tokushima D., Ratnayake K. R. M. N., Isikawa H., Wang D ., “A Modified C-dump Soft Switched SRM Converter”, IEEJ-IPEC’2000 Conference Record.

1996

Kularatna A.D.V.N., Ratnayake K. R. M. N., Hewawickrama S.B., Liyanage D.N., "Soft Microcontroller based power failure recorder for worst case power line monitoring", Proceedings of the PEMC'96 Conference (Budapest, Hungary), 2 - 4 September 1996, (Vol. 2) pp. 301 - 303.



Research

Research Interests

  • Voice over IP - Protocols and Signaling.
  • Speech Recognition and Synthesis.
  • Linux Embedded Systems.
  • Digital Audio Restoration.
  • Computer Music.



AWARDS & MEMBERSHIPS

MEMBERSHIPS

  • Member, IEEE.

POSITIONS HELD

POSITIONS  HELD

  • Senior Lecturer Dept. of Electrical & Electronic Engineering, University of Peradeniya, Sri Lanka. (2001 to date)
  • Researcher Gifu University, Japan. (1995 to 1996)
  • Research Engineer Arthur C Clarke Institute for Modern Technologies, Katubedde, Moratuwa Sri Lanka. (1991-1994)