Norhafiz bin Azis

@research.upm.edu.my

Electrical and Electronic Engineering
Advanced Lightning, Power and Energy Research Centre (ALPER)

Norhafiz bin Azis


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https://researchid.co/norhafiz

RESEARCH, TEACHING, or OTHER INTERESTS

Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment, Energy, General Energy
223

Scopus Publications

3576

Scholar Citations

32

Scholar h-index

94

Scholar i10-index

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

  • Advanced position control and artificial intelligence strategies for robust robotic manipulators with energy-saving features: a comprehensive review
    MY Elshishini, NMH Norsahperi, MK Hassan, H Rashidi Ramli, ...
    Systems Science & Control Engineering 14 (1), 2657100 , 2026
    2026
  • Modelling of the partial discharge within insulation paper under double spherical cavity
    MH Roslan, N Azis, MZA Ab Kadir, J Jasni, MFM Yousof
    Electric Power Systems Research 257, 112978 , 2026
    2026
  • Electromagnetic transient simulation of EV fast charging on distribution networks: Comparative evaluation with PV integration
    AHA Karim, MZA Ab Kadir, X Liu, N Azis, NMH Norsahperi, ZMK Abda
    Journal of Energy Storage 155, 121535 , 2026
    2026
  • Assessment of viscosity changes due to residual mineral oil in synthetic ester oil
    NA Othman, H Zainuddin, MS Yahaya, N Azis, Z Ibrahim, MAC Musni
    AIP Conference Proceedings 3462 (1), 090005 , 2026
    2026
  • An Impedance-Matching Technique for Suppressing Spurious Switching in Flyback Converters with Parasitic Effects
    MF YAAKUB, MAM RADZI, N AZIS, S SHAFIE, M AZRI, FHM NOH
    Przegląd Elektrotechniczny, 173 , 2026
    2026
  • Harmonic distortion assessment of EV charging penetration and superconducting magnetic energy storage integration in a 400 V distribution network: EMT simulation based on a …
    AH Abdul Karim, MZA Ab Kadir, X Liu, N Azis, NMH Norsahperi, ...
    Engineering Research Express 8 (4), 045325 , 2026
    2026
  • Effect of dibenzyl disulphide on partial discharge characteristics in mineral oil–impregnated cellulose pressboard
    AM Selva, N Azis, MZA Ab Kadir, J Jasni, H Zainuddin, MFM Yousof
    Electric Power Systems Research 251, 112212 , 2026
    2026
    Citations: 1
  • Output Capacitance Extraction of p -GaN HEMTs under Multi Pulse Switching across Variable Frequencies and Drain-Bias Stress
    X Liu, J Chen, S Wang, S Wu, Z Jiang, MAM Radzi, N Azis, S Shafie, ...
    IEEE Transactions on Power Electronics , 2026
    2026
  • Design of Rapid-Response Fail-Safe Protection Circuit for 200 V p-Gan HEMTs in LLC Half-Bridge Converters
    X Liu, S Shafie, MAM Radzi, N Azis, AHA Karim, N Norddin
    2025 IEEE International Circuit and System Symposium (ICSyS), 1-6 , 2025
    2025
  • Harmonic distortion analysis in power system due to geomagnetically induced currents
    ZM Khurshid, MZA Ab Kadir, NF Ab Aziz, ZA Rhazali, N Azis
    Electric Power Systems Research 247, 111831 , 2025
    2025
    Citations: 2
  • Simulation-Based Evaluation of Power Efficiency and Output Capacitance in Standalone PV MPPT Buck Converters Using 200 V p -GaN HEMTs
    X Liu, S Shafie, MAM Radzi, N Azis, AHA Karim, N Norddin, I Lawal
    Journal of Electrical Engineering & Technology 20 (6), 3875-3887 , 2025
    2025
    Citations: 4
  • An adaptive sliding mode controller with free-will arbitrary time convergence for three-phase rectifiers in autonomous agricultural vehicles
    OT Mahmood, WZ Wan Hasan, N Azis, NMH Norsahperi, HR Ramli, ...
    PLoS One 20 (8), e0330424 , 2025
    2025
  • Advanced Transformer Insulating Fluids: Morphological and Dielectric Performance of Hybrid Hematite-Zinc Oxide Nanofluids
    D Zamri, NHN Ali, NSM Mustakim, NK Mohd, N Azis, MH Mamat
    2025 IEEE 5th International Conference in Power Engineering Applications … , 2025
    2025
  • Acoustic Partial Discharge Localization in Refined, Bleached and Deodorized Palm Oil (RBDPO) Based on the Savitzky-Golay and Moving Average Denoising Methods.
    ND Ahmad, N Azis, J Jasni, KA Md Rezali, MA Talib, NH Nik Ali, ...
    Pertanika Journal of Science & Technology 33 , 2025
    2025
  • On the Effect of Rolling Sphere Penetration and Rod Spacing Configurations in Optimizing Lightning Protection for Solar Farms
    MSM Nasir, MZA Ab Kadir, MAM Radzi, N Azis, M Osman, NAFM Nasir
    2025 13th Asia-Pacific International Conference on Lightning (APL), 1-6 , 2025
    2025
  • Broken rotor bar detection of three phase induction motor using frequency response analysis.
    R Khan, MF Mohd Yousof, RA Rahman, N Azis, S Al-Ameri, A Ali
    International Journal of Electrical & Computer Engineering (2088-8708) 15 (2) , 2025
    2025
    Citations: 1
  • Investigation of Partial Discharge Characteristics in Mineral Oil Induced by Dibenzyl Disulfide.
    AM Selva, N Azis, MU Tariq, MZA Ab Kadir, J Jasni, H Zainuddin
    Pertanika Journal of Science & Technology 33 (2) , 2025
    2025
    Citations: 2
  • Improved electrogeometric model for shielding failure evaluation of double-circuit UHVAC transmission lines based on leader propagation simulations
    Z Ma, J Jasni, MZA Ab Kadir, N Azis, Y Ma
    Electric Power Systems Research 239, 111240 , 2025
    2025
    Citations: 2
  • SPICE Simulation Assisted Thermal Management for Surface-Mount GaN HEMTs: Experimental Validation and Performance Insights
    X Liu, S Shafie, MAM Radzi, N Azis, N Norddin, AHA Karim, I Lawal
    2025 IEEE Power Electronics Society International Decentralized Energy … , 2025
    2025
  • Enhanced Incremental Conductance MPPT with Adjustable Reference Current and Scheduled-Gain Using a Power Zoning Strategy for Flyback-Based Photovoltaic Inverter Systems
    MF Yaakub, MAM Radzi, FHM Noh, M Azri, S Shafie, N Azis, AAN Zaidan
    Journal of Power and Energy Engineering 13 (9), 261-273 , 2025
    2025
    Citations: 1

MOST CITED SCHOLAR PUBLICATIONS

  • Automated positioning dual-axis solar tracking system with precision elevation and azimuth angle control
    MHM Sidek, N Azis, WZW Hasan, MZA Ab Kadir, S Shafie, MAM Radzi
    Energy 124, 160-170 , 2017
    2017
    Citations: 207
  • Evolution of transformer health index in the form of mathematical equation
    A Azmi, J Jasni, N Azis, MZAA Kadir
    Renewable and Sustainable Energy Reviews 76, 687-700 , 2017
    2017
    Citations: 131
  • Lightning protection on photovoltaic systems: A review on current and recommended practices
    NI Ahmad, MZA Ab-Kadir, M Izadi, N Azis, MAM Radzi, NH Zaini, ...
    Renewable and Sustainable Energy Reviews 82, 1611-1619 , 2018
    2018
    Citations: 121
  • The effect of temperature on a mono-crystalline solar PV panel
    NH Zaini, MZ Ab Kadir, M Izadi, NI Ahmad, MAM Radzi, N Azis
    2015 IEEE Conference on Energy Conversion (CENCON), 249-253 , 2015
    2015
    Citations: 118
  • Suitability of palm based oil as dielectric insulating fluid in transformers
    N Azis, J Jasni, MZA Ab Kadir, MN Mohtar
    Journal of Electrical Engineering & Technology 9 (2), 662-669 , 2014
    2014
    Citations: 100
  • Effect of molecular structure on oxidative degradation of ester based transformer oil
    NA Raof, R Yunus, U Rashid, N Azis, Z Yaakub
    Tribology International 140, 105852 , 2019
    2019
    Citations: 83
  • Investigation of the dielectric and thermal properties of non-edible cottonseed oil by infusing h-BN nanoparticles
    RA Farade, NIBA Wahab, DEA Mansour, NB Azis, J Jasni, ...
    Ieee Access 8, 76204-76217 , 2020
    2020
    Citations: 75
  • Lightning surge analysis on a large scale grid-connected solar photovoltaic system
    NH Zaini, MZA Ab. Kadir, MA Mohd Radzi, M Izadi, N Azis, NI Ahmad, ...
    Energies 10 (12), 2149 , 2017
    2017
    Citations: 72
  • An enhanced adaptive perturb and observe technique for efficient maximum power point tracking under partial shading conditions
    AN Mahmod Mohammad, MA Mohd Radzi, N Azis, S Shafie, ...
    Applied Sciences 10 (11), 3912 , 2020
    2020
    Citations: 67
  • Investigation of the effect of sonication time on dispersion stability, dielectric properties, and heat transfer of graphene based green nanofluids
    RA Farade, NIA Wahab, DEA Mansour, NB Azis, JB Jasni, V Veerasamy, ...
    IEEE Access 9, 50607-50623 , 2021
    2021
    Citations: 63
  • Development of graphene oxide-based nonedible cottonseed nanofluids for power transformers
    RA Farade, NI Abdul Wahab, DEA Mansour, NB Azis, J bt. Jasni, ...
    Materials 13 (11), 2569 , 2020
    2020
    Citations: 59
  • On the effect of lightning on a solar photovoltaic system
    NH Zaini, MZA Ab-Kadir, M Izadi, NI Ahmad, MAM Radzi, N Azis, ...
    2016 33rd International Conference on Lightning Protection (ICLP), 1-4 , 2016
    2016
    Citations: 55
  • Ageing assessment of transformer paper insulation through post mortem analysis
    N Azis, Q Liu, ZD Wang
    IEEE Transactions on Dielectrics and Electrical Insulation 21 (2), 845-853 , 2014
    2014
    Citations: 54
  • The effect of interfacial zone due to nanoparticle–surfactant interaction on dielectric properties of vegetable oil based nanofluids
    RA Farade, NIA Wahab, DEA Mansour, NB Azis, JB Jasni, V Veerasamy, ...
    IEEE Access 9, 107033-107045 , 2021
    2021
    Citations: 53
  • Investigation on the electrical properties of palm oil and coconut oil based TiO 2 nanofluids
    SFM Nor, N Azis, J Jasni, MZA Ab Kadir, R Yunus, Z Yaakub
    IEEE Transactions on Dielectrics and Electrical Insulation 24 (6), 3432-3442 , 2018
    2018
    Citations: 53
  • Estimation of transformers health index based on the markov chain
    MS Yahaya, N Azis, MZA Ab Kadir, J Jasni, MH Hairi, MA Talib
    Energies 10 (11), 1824 , 2017
    2017
    Citations: 53
  • New perturb and observe algorithm based on trapezoidal rule: Uniform and partial shading conditions
    NMM Altwallbah, MAM Radzi, N Azis, S Shafie, MAAM Zainuri
    Energy Conversion and Management 264, 115738 , 2022
    2022
    Citations: 47
  • Nanoparticles application in high voltage insulation systems
    EJ Kadim, ZA Noorden, Z Adzis, N Azis
    IEEE Transactions on Dielectrics and Electrical Insulation 28 (4), 1380-1399 , 2021
    2021
    Citations: 47
  • Development of palm-based neopentyl glycol diester as dielectric fluid and its thermal aging performance
    NA Raof, U Rashid, R Yunus, N Azis, Z Yaakub
    IEEE Transactions on Dielectrics and Electrical Insulation 23 (4), 2051-2058 , 2016
    2016
    Citations: 47
  • Unmanned aerial vehicle quadcopter: A review
    OID Bashi, WZ Hasan, N Azis, S Shafie, H Wagatsuma
    Journal of Computational and Theoretical Nanoscience 14 (12), 5663-5675 , 2017
    2017
    Citations: 44