Mathematical Modeling in Combining Photovoltaic and Thermoelectric Generator Using a Spectrum Splitter

Hariyanto Hariyanto; Mustofa Mustofa; Zuryati Djafar; Wahyu H. Piarah

doi:10.25042/epi-ije.022019.13

Hariyanto Hariyanto Department of Mechanical Engineering, Engineering Faculty, Musamus University
Mustofa Mustofa Department of Mechanical Engineering, Engineering Faculty, Universitas Tadulako
Zuryati Djafar Department of Mechanical Engineering, Engineering Faculty, Universitas Hasanuddin
Wahyu H. Piarah Department of Mechanical Engineering, Engineering Faculty, Universitas Hasanuddin

DOI: https://doi.org/10.25042/epi-ije.022019.13

Keywords: Photovoltaic, power output, spectrum splitter, thermoelectric generator

Abstract

The experimental stages of converting solar energy into electrical energy in Photovoltaic and Thermoelectric Generator (PV-TEG) hybird takes a long time. Modeling is one approach to find out the initial data before conducting experiments leading to minimize design errors, time and budget. A mathematical model is created to analyze the performance of a PV-TEG hybrid module. Modeling is performed as an electrical circuit equivalent to Kirchoff's Curent Law (KCL) by deriving several equations corresponding to the characteristics of each module. Type of PV is amorphous Silicon (a-Si), while TEG is Bismuth Telluride (Bi₂Te₃). The AM1.5D standard solar spectrum is splitted its wavelength spectrum using hot mirror, where the wavelengths of 400-690 nm are transmitted to PV and 690-1150 nm are reflected to TEG. All of PV-TEG hybrid parameters, for example intensity, temperature, and material property are obtained from the specification data of each module. As a results, the maximum total power is 0.0437 W with 5.1% its efficiency.