http://repository.iitr.ac.in/handle/123456789/22845| Title: | Comparative assessment of three-phase transformerless grid-connected solar inverters |
| Authors: | Ronanki, Deepak Sang P.H. Sood V. Williamson S.S. |
| Published in: | Proceedings of the IEEE International Conference on Industrial Technology 2017 IEEE International Conference on Industrial Technology, ICIT 2017 |
| Abstract: | Solar energy is a promising alternative energy source for a sustainable pollution-free future. Due to the requirements of high efficiency, reliability, power density and low cost, transformerless PV inverters can be utilized in a grid-connected solar energy system. However, this suffers from no galvanic isolation and leakage currents through the stray capacitances between the PV array and the ground which results in some degradation of the system's performance as well as safety issues. This paper performs a comprehensive review and comparison of the performance of different 3-phase inverter topologies combined with different pulse width modulation (PWM) schemes in transformerless PV systems. Moreover, a modified discontinuous PWM technique was proposed for an H8 inverter to reduce leakage currents in this paper. The analysis was carried out for 50 kW PV inverters. The key performance of each inverter topology such as common mode voltages (CMVs), leakage currents, current harmonics and efficiency are holistically evaluated by using simulation results. Also, the merits and demerits of each system are highlighted. © 2017 IEEE. |
| Citation: | Proceedings of the IEEE International Conference on Industrial Technology (2017): 66-71 |
| URI: | https://doi.org/10.1109/ICIT.2017.7913060 http://repository.iitr.ac.in/handle/123456789/22845 |
| Issue Date: | 2017 |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Keywords: | Capacitance Leakage currents Photovoltaic cells Pulse width modulation Solar energy Topology Voltage control Alternative energy source Common mode voltage Comparative assessment Galvanic isolation Inverter topologies Solar energy systems Stray capacitances System's performance Electric inverters |
| ISBN: | 9.78151E+12 |
| Author Scopus IDs: | 55233695400 57194284670 57222519760 7203080313 |
| Author Affiliations: | Ronanki, D., Department of Electrical, Computer and Software Engineering, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada Sang, P.H., Department of Electrical, Computer and Software Engineering, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada Sood, V., Department of Electrical, Computer and Software Engineering, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada Williamson, S.S., Department of Electrical, Computer and Software Engineering, Faculty of Engineering and Applied Science, University of Ontario Institute of Technology (UOIT), 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada |
| Appears in Collections: | Conference Publications [HRE] |
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