Associate Professor Nihal Kularatna

Associate Professor

Qualifications: BSc Eng(Hons), DSc, C.Eng, FIENZ,FIET, FIE, SMIEEE

About Nihal

Nihal was spotlighted as a Featured Engineer for US electrical engineering website EE Web. Read the interview.

Research Interests

Power conditioning and power protection for electronic systems; Supercapacitor applications; DC power management; Smart sensor systems

Research Supervised


  • Hu, Yang (in progress). SC assisted DC Microgrid applications.
  • Vandy, Francis (2014). Design and Implementation of an AC Voltage Regulator based on Series Power Semiconductor Array.
  • Kozhiparambil, Parthasradhy K. (2011). Development of a supercapacitor based surge resistant uninterruptible power supply.
  • Jindasa, Chandani (2007). High Power linear AC electronic load for testing UPS systems.


  • Gaylard, Carl (2016). Supercapacitor assisted inverter for the purposes of ripple control.


  • Ariyarathna, Thilanga (in progress). SC assisted linear computer power supply (silver box).
  • Fernando, Jayathu (in progress). Supercapacitor-Assisted surge absorber (SCASA) and Supercapacitor Modelling.
  • Jayananda, Dilini (in progress). SC assisted LED lighting topologies.
  • Milani, Kaveh (in progress). SC assisted high density inverter.
  • Wijesooriya, Nimesha (in progress). Linear AC regulator technique.
  • Gurusinghe, Nicoloy (in progress). Supercapacitor assisted temperature modification apparatus (SCATMA) and fast supercapacitor charger.
  • Wickramasinghe, Thilini (2016)Supercapacitor-based linear converter for voltage regulator modules.
  • Leijen, Petrus J.M. (2016). NiMH battery forensics: Instrumentation, modelling and prognostics for identifying failure.
  • Gunawardne, Kosala (2014). Analysis on SCALDO regulators.
  • James, Sisira (2014). Investigation of surge propagation in transient voltage surge suppressors and experimental verification.

Teaching Commitments

Recent Publications

  • Gunawardane, K., & Kularatna, N. A. D. V. (2017). Supercapacitor assisted low dropout regulator technique: A new design approach to achieve high-efficiency linear DC-DC converters. IET Power Electronics. doi:10.1049/iet-pel.2017.0093

  • Wickramasinghe, T., Kularatna, N. A. D. V., & Steyn-Ross, D. (2017). Reduced-switch SCALDO: An extra low frequency DC—DC converter technique for VRM applications. IET Power Electronics. doi:10.1049/iet-pel.2016.0420

  • Leijen, P., Steyn-Ross, D., & Kularatna, N. A. D. V. (2017). Use of effective-capacitance variation as a measure of state-of-health in a series-connected automotive battery pack. IEEE Transactions on Vehicular Technology. doi:10.1109/TVT.2017.2733002 Open Access version:

  • Gurusinghe, N., Kularatna, N., Round, W. H., & Steyn-Ross, D. A. (2017). Energy-Limited transient-mode fast supercapacitor charger topology. IEEE Transactions On Power Electronics, 32(2), 911-914. doi:10.1109/TPEL.2016.2590561

View All research publications by Nihal Kularatna

Contact Details

Room: EF.3.03
Phone: +64 7 858 5102
Cellphone: 027 579 0007
Fax: +64 7 838 4835