OFFICIAL SITE OF PAUL BARENDSE
What I Do
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A LITTLE ABOUT ME
I’m an academic from the Cape Town (South Africa) area, dedicating my life to exploring and researching ways to enhance the world we live in. My research focus is towards electric drives and power electronics for renewable energy and industrial applications. My research contributes to the development and maintenance of such systems to ensure these are reliable and cost effective. I have received grants for my research, with projects and publications that you can learn more about below.
RESEARCH PROJECTS
The Course of My Career
DFIG'S - FAULT DIAGNOSIS
We have developed a laboratory-based test rig to represent a utility scale DFIG wind turbine system. The scaled-down generator has been designed and developed using dimensional analysis techniques to mimic the behaviour of the actual generator. The microgenerator has been adapted for fault implementation, which allows us to explore methods for early fault detection and mitigation. Advanced signal processing tools are used for diagnostics to account for the transient nature of the system.
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REAL-TIME IMPEDANCE SPECTROSCOPY FOR PV
Impedance spectroscopy is a tool for laboratory-based characterisation, offering detailed insight into the electrochemical properties of the device. Our research is focused on moving the technique closer towards real-time implementation through the use of the power electronic converter. This would allow for characterisation and fault classification of photovoltaics while in-operation.
CONDITION MONITORING OF FUEL CELLS
The durability of the fuel cell has been a major hindrance to its large scale adoption. Â The current operational lifetime of the fuel cell falls short of set targets for more commonly used energy conversion systems. This challenge also translates to system cost which discourages uptake of the fuel cell technology. To remedy the durability challenge, in addition to efforts from the material side, real-time monitoring of the operational fuel cell is necessary. This work focuses on techniques for online condition monitoring using invasive and passive methods.
ELECTRIC DRIVES - FAULT DETECTION AND EFFICIENCY ESTIMATION
Electric drives are critical to the efficient operation of various industries (eg. EV's). Accurate control while maximising efficiency are some of the important features offered by these systems. However, as their complexity in application increases, so does the difficulty in identifying early inception of faults. Due to the typical non-stationary operation of electric drives, time-frequency signal processing techniques are to be explored for fault detection.
POSSIBLE MSC & PHD TOPICS
1. Power electronic converter for control of Wind Energy Conversion Systems.
2. Design and develop an electric drive for an EV application.
3. Power electronic interface for fuel cell/PV systems.
4. Fault detection and ride-through strategies for wind energy conversion systems.
5. Online condition monitoring of inverter-fed electric motors in electric vehicle applications.
6. Investigation into the impact of electric motor faults on the battery of electric vehicles.
7. Towards a low-cost Hardware platform for online condition monitoring of PV modules.
8. Fault detection using the wireless power transfer unit in electric vehicles for impedance extraction.
9. Investigating the use of switch-mode converter inductor current ripple excitation for fuel cell or battery impedance spectroscopy.
RECENT PUBLISHED WORKS
2019-2022
PATENT
1. US Patent App. 17/436,502, “Characterisation of Electricity-Producing Cells Using Broadband Impedance Spectroscopy”, 2022
JOURNALS
1. A.A. Ajayi-Obe, M.A. Khan and P.S. Barendse, “Techno-Economic Evaluation of Five-Level Nested Neutral Point Clamped (NNPC) Converter Topology for Transformer-less Connection of High Power Wind Energy Conversion Systems”, Journal of Energy in Southern Africa, Vol. 30, No. 3, pp. 33-43, Aug. 2019.
2. J. Mushenya, M. A. Khan and P. Barendse, "Development of a Test Rig to Automate Efficiency Testing of Converter-Fed Induction Motors," in IEEE Transactions on Industry Applications, 2019.
3. E. Balogun, N. Hussein, J. Chamier, P. Barendse, “Performance and durability studies of perfluorosulfonic acid ionomers as binders in PEMFC catalyst layers using Electrochemical Impedance Spectroscopy", International Journal of Hydrogen Energy 44 (2019) pp. 32219-32230
4. M. Aminu, P. Barendse and A. Khan, "A Simplified Equivalent Circuit Method for Induction Machine Nonintrusive Field Efficiency Estimation," in IEEE Transactions on Industrial Electronics, vol. 67, no. 9, pp. 7301-7311, Sept. 2020.
5. O. I. Olayiwola and P. S. Barendse, "Photovoltaic Cell/Module Equivalent Electric Circuit Modeling Using Impedance Spectroscopy," in IEEE Transactions on Industry Applications, vol. 56, no. 2, pp. 1690-1701, March-April 2020.
6. Khan, A.; Hu, X.M.; Khan, M.A.; Barendse, P. Doubly Fed Induction Generator Open Stator Synchronized Control during Unbalanced Grid Voltage Condition, Energies 2020, 13, 3155.
7. M. Chirindo, M. A. Khan and P. Barendse, "Analysis of Non-Intrusive Rotor Speed Estimation Techniques for Inverter-Fed Induction Motors," in IEEE Transactions on Energy Conversion, vol. 36, no. 1, pp. 338-347, March 2021, doi: 10.1109/TEC.2020.3007409.
8. Y. Liu, L. Ralikalakala, P. Barendse and P. Pillay, "Power Electronic Converter-Based Induction Motor Emulator with Stator Winding Faults," in IEEE Transactions on Industrial Electronics, 2022.
9. L. Shelembe and P. Barendse, "An adaptive amplitude-modulated pseudo-random binary sequence excitation for converter-based impedance spectroscopy characterization of photovoltaic modules," in IEEE Transactions on Industry Applications, 2022.
CONFERENCES
1. L. Shelembe, P. Barendse, “A Nested-loop ControlStrategy for a Bidirectional Cuk Inverter”,, Baltimore, Maryland, USA, 2019.
2. A. Aroge, P. Barendse, “Multi-Frequency Signal Synthesis for Accurate Fuel Cell Impedance Estimation”, , Baltimore, Maryland, USA, 2019.
3. M. Aminu, J. Mushenya, P. Barendse, M. A. Khan, “Converter-fed Induction Motor Efficiency Measurement under Variable Frequency/Load Points: An Extension of the IEC/TS 60034-2-3”, , Baltimore, Maryland, USA, 2019.
4. O. Faloye, P. Barendse, “A Three Level DC-DC Converter for Battery Impedance Spectroscopy”, , Baltimore, Maryland, USA, 2019.
5. O. Olayiwola, P. Barendse, “ Characterization of Photovoltaic Cells Using Time Domain Voltage Decay Analysis”, IEEE Africon, Accra, Ghana, 2019.
6. C. Boniface and P. Barendse, "Impedance Behavioural Study of Silicon Steel Laminated Core Inductor," 2020 International SAUPEC/RobMech/PRASA Conference, Cape Town, South Africa, 2020, pp. 1-6, doi: 10.1109/SAUPEC/RobMech/PRASA48453.2020.9041022.
7. E. Hamatwi and P. Barendse, "Condition Monitoring and Fault Diagnosis of Stator and Rotor Interturn Winding Faults in a DFIG-based Wind Turbine System: A Review," 2020 International SAUPEC/RobMech/PRASA Conference, Cape Town, South Africa, 2020, pp. 1-6, doi: 10.1109/SAUPEC/RobMech/PRASA48453.2020.9040981.
8. O. I. Olayiwola and P. S. Barendse, "Power Electronic Implementation of Electrochemical Impedance Spectroscopy on Photovoltaic Modules," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 3654-3661, doi: 10.1109/ECCE44975.2020.9236404.
9. L. Shelembe and P. Barendse, "Online condition monitoring of Photovoltaic (PV) cells by implementing electrical impedance spectroscopy using a switch-mode DC-DC converter," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 2136-2141, doi: 10.1109/ECCE44975.2020.9235596.
10. J. Mushenya, A. Khan and P. Barendse, "A Simplified Efficiency Estimation Approach for Converter-Fed Induction Motors," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 1046-1051, doi: 10.1109/ECCE44975.2020.9236297.
11. Y. Liu, L. Ralikalakala, P. Barendse and P. Pillay, "Power Hardware-in-the-Loop based Emulation of An Induction Machine with Stator Winding Faults," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021, pp. 1-6, doi: 10.1109/IECON48115.2021.9589711.
12. L. Shelembe and P. Barendse, "A quantitative feedback theory approach to converter-based broadband impedance spectroscopy for online condition monitoring of photovoltaic modules," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 451-458, doi: 10.1109/ECCE47101.2021.9595386.
13. E. Hamatwi, P. Barendse and A. Khan, "Development of a Test Rig for Fault Studies on a scaled-down DFIG," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 3805-3812, doi: 10.1109/ECCE47101.2021.9595739.
14. L. Shelembe and P. Barendse, "An amplitude-modulated pseudo-random binary sequence approach to broadband impedance spectroscopy for photovoltaic module system identification," 2021 IEEE ECCE, 2021, pp. 443-450, doi: 10.1109/ECCE47101.2021.9595969.
15. S. Mahlangu and P. Barendse, "Online Condition Monitoring of Fuel Cells (FC) by Implementing Electrical Impedance Spectroscopy using a Switch-Mode DC-DC Converter," 2021 IEEE ECCE, 2021, pp. 477-482, doi: 10.1109/ECCE47101.2021.9595528.
16. E. Hamatwi, P. Barendse and A. Khan, "An Investigation into the Diagnosis of Interturn Winding Faults in a Scaled-down DFIG using the MCSA and DWT of the Stator and Rotor Current," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 3797-3804, doi: 10.1109/ECCE47101.2021.9595144.
17. C. Boniface and P. Barendse, "Winding Inter-Turn Fault Detection in a Silicon Steel Laminated Core Inductor using Sweep Frequency Response Analysis," 2022 30th Southern African Universities Power Engineering Conference (SAUPEC), 2022, pp. 1-6, doi: 10.1109/SAUPEC55179.2022.9730713.
18. L. Shelembe and P. Barendse, "Parametric excitation for rapid converter-based PV module broadband impedance estimation," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 2022, pp. 1-7, doi: 10.1109/ECCE50734.2022.9947407.
19. L. Shelembe and P. Barendse, "Inductor current ripple excitation design for rapid converter-based electrical impedance spectroscopy on a monocrystalline solar module," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 2022, pp. 1-8, doi: 10.1109/ECCE50734.2022.9947520.
20. Y. Liu, C. Boniface, P. Barendse and P. Pillay, "Power-Hardware-in-the-Loop Based Induction Motor Emulator with Rotor Cage Fault," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 2022, pp. 1-6, doi: 10.1109/ECCE50734.2022.9947658.
21. S. Mahlangu and P. Barendse, "Fuel Cell Stack Broadband Excitation for Online Condition Monitoring Using Different Switch-mode DC-DC Topologies," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 2022, pp. 1-8, doi: 10.1109/ECCE50734.2022.9948207.
22. L. Ralikalakala and P. Barendse, "Impact of Inverter Switching Harmonics in Detecting Changes in Impedance Due to Broken Rotor Bars," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), 2022, pp. 1-6, doi: 10.1109/ECCE50734.2022.9947928