Photovoltaic Cell/Module Equivalent Electric Circuit Modeling Using Impedance Spectroscopy

TY - JOUR

T1 - Photovoltaic Cell/Module Equivalent Electric Circuit Modeling Using Impedance Spectroscopy

AU - Olayiwola, Olufemi Issac

AU - Barendse, Paul S.

N1 - © 2019 IEEE

PY - 2020/3/1

Y1 - 2020/3/1

N2 - This work is focused on the dynamic alternating current equivalent electric circuit (AC-EEC) modeling of the polycrystalline silicon wafer-based photovoltaic cell and module under various operational and fault conditions. The models are drawn from the impedance changes observed using electrochemical impedance spectroscopy. Vital considerations for valid impedance data and appropriate parameter extraction were also discussed. In this work, cell-level tests were carried out at different voltage bias levels under illumination, dark, uniform partial shading, and cell-mismatch conditions. The cell characterization procedure was then used as a basis for developing the photovoltaic (PV) module level model. Normal illumination and partial shading tests were carried out at the module/panel level. The AC-EEC model for both the levels was obtained from the associated Nyquist and Bode plots. These models were then used to extract the internal cell/module parameters and the associated trends were observed. Results obtained demonstrates that the variations of the ac model give several parameters that show distinct variation such that they can be used for inline characterization and real-time condition monitoring of the photovoltaic cells/module under the different operational and fault conditions.

AB - This work is focused on the dynamic alternating current equivalent electric circuit (AC-EEC) modeling of the polycrystalline silicon wafer-based photovoltaic cell and module under various operational and fault conditions. The models are drawn from the impedance changes observed using electrochemical impedance spectroscopy. Vital considerations for valid impedance data and appropriate parameter extraction were also discussed. In this work, cell-level tests were carried out at different voltage bias levels under illumination, dark, uniform partial shading, and cell-mismatch conditions. The cell characterization procedure was then used as a basis for developing the photovoltaic (PV) module level model. Normal illumination and partial shading tests were carried out at the module/panel level. The AC-EEC model for both the levels was obtained from the associated Nyquist and Bode plots. These models were then used to extract the internal cell/module parameters and the associated trends were observed. Results obtained demonstrates that the variations of the ac model give several parameters that show distinct variation such that they can be used for inline characterization and real-time condition monitoring of the photovoltaic cells/module under the different operational and fault conditions.

KW - Equivalent circuit model

KW - impedance

KW - photovoltaic

KW - polycrystalline silicon

KW - spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85082046330&partnerID=8YFLogxK

U2 - 10.1109/TIA.2019.2958906

DO - 10.1109/TIA.2019.2958906

M3 - Article

AN - SCOPUS:85082046330

SN - 0093-9994

VL - 56

SP - 1690

EP - 1701

JO - IEEE Transactions on Industry Applications

JF - IEEE Transactions on Industry Applications

IS - 2

ER -