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

  • Bandara, N., Gunawardane, K., & Kularatna, N. (2020). Supercapacitor based RC loop loss circumvention technique to improve the efficiency of photovoltaic inverters. In Proceedings of the IEEE International Conference on Industrial Technology Vol. 2020-February (pp. 1151-1156). doi:10.1109/ICIT45562.2020.9067272

  • Subasinghage, K., Gunawardane, K., Kularatna, N., & Lie, T. T. (2019). Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) technique to a split-rail DC-DC converter application. IEEE Access, 7, 124034-124047. doi:10.1109/ACCESS.2019.2937754

  • Ariyarathna, T., Kularatna, N., & Steyn-Ross, D. A. (2019). DC-UPS capability for the SCALDO-assisted 48-V google rack power architecture. In Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC Vol. 2019-March (pp. 476-481). doi:10.1109/APEC.2019.8722306

  • Wijesooriya, P. N., Kularatna, N., & Steyn-Ross, D. A. (2019). Use of multiple transformer windings for efficiency enhancement in the series transistor-array based linear AC voltage regulator. In Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC Vol. 2019-March (pp. 2414-2419). doi:10.1109/APEC.2019.8722202

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