Dynamic Equivalent Circuit Model of Dye-Sensitized Solar Cells for Transient Response to Solar Irradiance

摘要

The equivalent circuit models of dye-sensitized solar cells (DSSCs) are presented for characterizing the AC and dynamic responses of build-integrated photovoltaic (BIPV) solar windows. Based on the current-voltage and electrochemical impedance spectroscopy (EIS) measurements on a test cell (similar to 9 x 5 mm), the circuit models are implemented in P-spice. It is demonstrated that the simulated DC and AC (EIS) responses are well-matched with the measurement results and that the dynamic transient response can be simulated as well. Using the circuit model, we demonstrate the dynamic responses of a DSSC module (similar to 300 x 300 mm) at various local shading conditions. The developed circuit models can be used to analyze and design a solar system using DSSC BIPV windows.