Vijay Laxmi Mishra - Electrical Engg. Department, Kamla Nehru Institute of Technology, Sultanpur (An autonomous institute of state Govt., established in ۱۹۷۶), U.P.-۲۲۸۱۱۸, India.
Yogesh Chauhan - Electrical Engineering Department, Professor, Kamla Nehru Institute of Technology, Sultanpur (An autonomous institute of state Govt., established in ۱۹۷۶), Uttar Pradesh, India.
Kripa Verma - Electrical Engineering Department, Professor and Director, Kamla Nehru Institute of Technology, Sultanpur (An autonomous institute of state Govt., established in ۱۹۷۶), Uttar Pradesh, India.

Solar energy serves as one of the promising resources of renewable energy due to its abundance availability and clean nature. Climatic data such as irradiation level and temperature are essential as input variables while designing the photovoltaic-based system. This research paper presents an extensive comparative analysis of modeling approaches of photovoltaic modules using a ۱-diode and ۲-diode solar models studied under varying irradiation levels and temperature values. ۸ different cases of solar models based on ۱-diode and ۲-diode models have been incorporated. Its effect on ۱۰ performance indexes of the photovoltaic module is comprehensively investigated. Based on these parameters, these solar models are compared in detail. MATLAB/Simulink tool is applied to explore the results. Extensive results have been taken under various operating conditions. The results show that the ۲-diode model exhibits excellent performance as it maximizes the efficiency by ۵.۴۱% against the ۱-diode model. Also, the ۲-diode model has a greater performance ratio of ۴۱.۷۰% than the ۱-diode model. Hence, it is revealed that the performance of ۲-diode models in terms of smooth output curves, increased maximum power, fill factor, and efficiency are much closer to the actual performance as compared to the ۱-diode model.

Irradiation Level, Mathematical Modelling, Power-Voltage Curve, Photovoltaic Module, Voltage-Current Curve, ۱-diode model, ۲-diode model