Dr. Abhishek Tiwari
Dr. Abhishek Tiwari
Designation : Research Associate I
Qualification : Ph.D. (Physics), USBAS, GGSIPU-Delhi
Department/Project : VARD & IPR- Engineering
Location : Gandhinagar, Gujarat
Email : abhishekt@nifindia.org
Dr. Abhishek Tiwari obtained his Ph.D. in Physics from (GGSIPU), Delhi, where his doctoral research focused on the modelling and performance analysis of hybrid solar photovoltaic–thermoelectric generator (PV–TEG) systems and their applications. He holds an M.Tech. in Electronics and Communication Engineering from the University School of Information, Communication and Technology (USICT), Guru Gobind Singh Indraprastha University, Delhi, and a B.Tech. in Electronics and Communication Engineering from Netaji Subhas University of Technology (NSUT), East Delhi Campus. His research interests include renewable energy systems, hybrid photovoltaic–thermal and thermoelectric technologies, thermal and exergy analysis, mathematical modelling, MATLAB-based numerical simulation, and artificial intelligence-driven predictive modelling using artificial neural networks (ANNs). He has published five research papers in reputed international journals and presented six papers at international conferences. He also serves as a peer reviewer for internationally reputed journals, including Renewable Energy (Elsevier) and the International Journal of Green Energy (Taylor & Francis). Committed to continuous professional development, he has actively participated in several Faculty Development Programmes (FDPs), workshops, and professional training programmes in renewable energy, computational modelling, artificial intelligence, engineering research, and related interdisciplinary domain.
Research Papers
Tiwari, A. & Aggarwal, S. (2026). Exergy analysis and predictive modelling of a hybrid solar photovoltaic thermoelectric collector for refrigeration application. International Journal of Exergy. https://doi.org/10.1504/IJEX.2026.10080179.
Tiwari, A., Tiwari, G. N., Anand, S. & Aggarwal, S. (2025). Modelling of a hybrid concentrated solar photovoltaic thermal–thermoelectric generator collector with vapor absorption refrigeration system at different constant collection temperatures. Environmental Progress & Sustainable Energy, 44, e70144. https://doi.org/10.1002/ep.70144.
Tiwari, A. & Aggarwal, S. (2025). Comparative analysis of artificial neural network-based predictive models for hybrid compound parabolic concentrator–photovoltaic thermal–thermoelectric generator collector across multiple performance metrics. Environmental Progress & Sustainable Energy, 44, e70199. https://doi.org/10.1002/ep.70199.
Tiwari, A., Anand, S. & Aggarwal, S. (2023). Comparative study of compound parabolic concentrator–photovoltaic thermal–thermoelectric generator (CPC-PVT-TEG) collector integrated with vapour absorption refrigeration (VAR) system. Energy Sources Part A: Recovery, Utilisation, and Environmental Effects, 45(4), 10277–10303. https://doi.org/10.1080/15567036.2023.2239742.
Tiwari, A. & Aggarwal, S. (2021). Thermal modelling, performance analysis and exergy study of a concentrated semi-transparent photovoltaic–thermoelectric generator (CSPV-TEG) hybrid power generation system. International Journal of Sustainable Energy, 40(10), 947–976. https://doi.org/10.1080/14786451.2021.1887187.
Conference Papers
Tiwari, A., Aggarwal, S. (2025). Hybrid PVT-TEG Collector Coupled with VAR System: A Comparative Study. In: Kumar, A., Tiwari, G.N., Norton, B., Tiwari, D. (eds) Selected Proceedings of the 1st International Conference on Advanced Materials for Sustainable Innovation; IC-AMSI 2024; 28–30 August; New Delhi; India. IC-AMSI 2024. Springer Proceedings in Energy. Springer, Singapore.https://doi.org/10.1007/978-981-96-4492-6_22
Tiwari, A. & Aggarwal, S. (2022). Performance investigation of semi-transparent photovoltaic thermal–thermoelectric generator (SPVT-TEG) hybrid system. In 2022 IEEE IAS Global Conference on Emerging Technologies (GlobConET) (pp. 482–485). Arad, Romania. https://doi.org/10.1109/GlobConET53749.2022.9872438.
Tiwari, A. & Aggarwal, S. (2022). A comparative study of concentrated photovoltaic thermal–thermoelectric generator hybrid systems. In S. Mekhilef, R. N. Shaw & P. Siano (Eds.), Innovations in Electrical and Electronic Engineering (Lecture Notes in Electrical Engineering, Vol. 894). Springer, Singapore. https://doi.org/10.1007/978-981-19-1677-9_42.
Tiwari, A. & Aggarwal, S. (2022). Performance analysis of concentrated semi-transparent photovoltaic thermal–thermoelectric generator (CSPVT-TEG) hybrid system under varying concentration ratio. In 2022 IEEE International Conference on Power Electronics, Smart Grid, and Renewable Energy (PESGRE) (pp.1–6). Trivandrum, India. https://doi.org/10.1109/PESGRE52268.2022.9715849.
Tiwari, A. & Aggarwal, S. (2020). The effect of concentration ratio and number of P–N thermocouples on photovoltaic–thermoelectric hybrid power generation system. In M. Bose & A. Modi (Eds.), Proceedings of the 7th International Conference on Advances in Energy Research (Springer Proceedings in Energy). Springer, Singapore. https://doi.org/10.1007/978-981-15-5955-6_144.
Tripathi, R., Tiwari, A. & Tiwari, G. N. (2020). Overall performance of N partially covered photovoltaic thermal–compound parabolic concentrator (PVT-CPC) collector with different concentration ratio. In S. Singh & V. Ramadesigan (Eds.), Advances in Energy Research (Vol. 2, Springer Proceedings in Energy). Springer, Singapore. https://doi.org/10.1007/978-981-15-2662-6_11.
Tiwari, A., Tripathi, R., Tiwari, G.N. (2020). Improved Analytical Model for Electrical Efficiency of Semitransparent Photovoltaic (PV) Module. In: Singh, S., Ramadesigan, V. (eds) Advances in Energy Research, Vol. 1. Springer Proceedings in Energy. Springer, Singapore. https://doi.org/10.1007/978-981-15-2666-4_10