Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels

Simple item page
dc.contributor.advisorBarendse, Paul
dc.contributor.authorAkparibo, Awingot Richard
dc.date.accessioned2026-07-03T09:44:32Z
dc.date.available2026-07-03T09:44:32Z
dc.date.issued2026
dc.date.updated2026-07-03T08:17:23Z
dc.description.abstractElectrochemical Impedance Spectroscopy (EIS) is a technique used to characterise the internal mechanisms and dynamic processes taking place within Electrochemical Power Sources and Solid-State Devices such as solar PV cells, batteries and fuel cells. This will enable tracking of their State of Health and monitoring performance loss due to degradation or operational anomalies such as hotspot, partial shading and dust settlement on the solar PV panel. This research proposes a novel online EIS for solar PV panels based on the application of a single stage boost DC-AC inverter topology. Although the single stage boost inverter topologies have gained popularity for their compactness, high voltage gain and high efficiencies, they have not been exploited for online EIS diagnostic functionality for the solar PV device like the traditional online EIS based on the two stage DC-DC-AC topology due to several challenges. The research is set to unpack some of these challenges and propose new EIS measurement techniques based on the single stage boost DC-AC inverter topology. The traditional online EIS becomes fundamental for understanding the problems and validating the online EIS results of the newly proposed research work. The challenges confronting EIS implementations such as the frequency range, cost, and practical hardware limitations on achieving high bandwidth for effective impedance spectroscopy extraction of the solar PV panel are addressed. Simulations and experimental results verified the proposed research, and all the online EIS results of the proposed technique were validated against the traditional online EIS and the commercial offline frequency response analyzer. The study findings are particularly relevant for PV applications, where the requirement of a single stage boost inverter is crucial for optimizing PV operations and lowering costs of system design.
dc.identifier.apacitationAkparibo, A. R. (2026). <i>Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels</i>. (). University of Cape Town ,Faculty of Engineering and the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/43461en_ZA
dc.identifier.chicagocitationAkparibo, Awingot Richard. <i>"Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels."</i> ., University of Cape Town ,Faculty of Engineering and the Built Environment ,Department of Electrical Engineering, 2026. http://hdl.handle.net/11427/43461en_ZA
dc.identifier.citationAkparibo, A.R. 2026. Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels. . University of Cape Town ,Faculty of Engineering and the Built Environment ,Department of Electrical Engineering. http://hdl.handle.net/11427/43461en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Akparibo, Awingot Richard AB - Electrochemical Impedance Spectroscopy (EIS) is a technique used to characterise the internal mechanisms and dynamic processes taking place within Electrochemical Power Sources and Solid-State Devices such as solar PV cells, batteries and fuel cells. This will enable tracking of their State of Health and monitoring performance loss due to degradation or operational anomalies such as hotspot, partial shading and dust settlement on the solar PV panel. This research proposes a novel online EIS for solar PV panels based on the application of a single stage boost DC-AC inverter topology. Although the single stage boost inverter topologies have gained popularity for their compactness, high voltage gain and high efficiencies, they have not been exploited for online EIS diagnostic functionality for the solar PV device like the traditional online EIS based on the two stage DC-DC-AC topology due to several challenges. The research is set to unpack some of these challenges and propose new EIS measurement techniques based on the single stage boost DC-AC inverter topology. The traditional online EIS becomes fundamental for understanding the problems and validating the online EIS results of the newly proposed research work. The challenges confronting EIS implementations such as the frequency range, cost, and practical hardware limitations on achieving high bandwidth for effective impedance spectroscopy extraction of the solar PV panel are addressed. Simulations and experimental results verified the proposed research, and all the online EIS results of the proposed technique were validated against the traditional online EIS and the commercial offline frequency response analyzer. The study findings are particularly relevant for PV applications, where the requirement of a single stage boost inverter is crucial for optimizing PV operations and lowering costs of system design. DA - 2026 DB - OpenUCT DP - University of Cape Town KW - Electrochemical Impedance Spectroscopy KW - solar PV cells LK - https://open.uct.ac.za PB - University of Cape Town PY - 2026 T1 - Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels TI - Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels UR - http://hdl.handle.net/11427/43461 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/43461
dc.identifier.vancouvercitationAkparibo AR. Single stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels. []. University of Cape Town ,Faculty of Engineering and the Built Environment ,Department of Electrical Engineering, 2026 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/43461en_ZA
dc.language.isoen
dc.language.rfc3066eng
dc.publisher.departmentDepartment of Electrical Engineering
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subjectElectrochemical Impedance Spectroscopy
dc.subjectsolar PV cells
dc.titleSingle stage boost inverter-based perturbation technique for online impedance spectroscopy measurements of solar PV panels
dc.typeThesis / Dissertation
dc.type.qualificationlevelDoctoral
dc.type.qualificationlevelPhD
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_ebe_2026_akparibo awingot richard.pdf
Size:
20.31 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.72 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
PhD / Doctoral