Modelling and simulation-based performance study of a transformerless single-stage grid-connected photovoltaic system in Indian ambient conditions |
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| Authors: | Asim Datta Gautam Bhattacharya Dipankar Mukherjee Hiranmay Saha |
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| Affiliation: | 1. Department of Electrical &2. Electronics Engineering, National Institute of Technology Meghalaya, Bijni Complex, Laitumkhrah, Shillong 793003, Meghalaya, Indiadatta_asim@rediffmail.com;4. Department of Physics, Ramakrishna Mission Vidyamandira, Belur Math, Howrah 711202, West Bengal, India;5. Department of Electronics &6. Tele-communications Engineering, Bengal Engineering and Science University, Shibpur, Howrah 711103, West Bengal, India;7. Centre of Excellence for Green Energy &8. Sensor Systems, Bengal Engineering and Science University, Shibpur, Howrah 711103, West Bengal, India |
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| Abstract: | This paper presents a transformerless single-stage full-bridge inverter for a grid-connected photovoltaic system (GCPVS) and its performances based on power loss, efficiency, and total harmonic distortion for the conditions: (a) seasonal variations of inputs in the photovoltaic (PV) system, (b) variation of grid voltage, and (c) variation of carrier frequency and Modulation Index of sinusoidal pulse-width modulation of the inverter. A typical 2.8 kWp, 368 V nominal PV array-based GCPVS is modelled and simulated to evaluate proper load matching in Indian ambient and grid conditions prior to practical implementation. Detailed analyses on system powers, power losses, efficiency, and harmonic distortions as well as selection of parameters for the simulation model are presented. The impacts of penetrating PV power into electric grid are investigated in order to predict the possible unwanted consequences. |
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| Keywords: | modelling and simulation performance study transformerless grid-connected PV system Indian ambient condition |
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