Identification of GTO Switch Fault in Voltage Source Inverter in PV Integrated Microgrid
| Authors | S.S. Ghosh1 , S. Chattopadhyay2 , S. Das3 , A. Das3, G.R.K. Prasad4, A. Das1 |
| Affiliations |
1Department of Electrical Engineering, Jadavpur University, Kolkata, West Bengal, India 2Department of Electrical Engineering, GKCIET, Malda, West Bengal, India 3Department of Electrical Engineering, IMPS College of Engineering and Technology, Malda, West Bengal, India 4Department of Electronics and Communication Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, A.P. – 522302, India |
| Е-mail | ssghosh732103@gmail.com |
| Issue | Volume 16, Year 2024, Number 3 |
| Dates | Received 03 April 2024; revised manuscript received 25 June 2024; published online 28 June 2024 |
| Citation | S.S. Ghosh, S. Chattopadhyay, et al., J. Nano- Electron. Phys. 16 No 3, 03022 (2024) |
| DOI | https://doi.org/10.21272/jnep.16(3).03022 |
| PACS Number(s) | 88.80.Cd, 88.80.H – |
| Keywords | Fast Fourier Transform (FFT), Fault detection, GTO, Microgrid, PV system, Voltage source inverter (VSI). |
| Annotation |
Microgrid inverters (MGIs) employing gate turn-off thyristor (GTO) technology are used in both grid-tied and off-grid microgrids (MGs), where they are essential for controlling power flow and maintaining system stability. The ability of GTOs to withstand high voltages and currents is crucial in power conversion systems that require substantial power levels. GTOs in voltage source inverters (VSIs) are used to convert DC electricity from renewable energy sources, such as photovoltaic (PV) systems, wind turbines or energy storage systems, into AC power that is suitable for use in MGs. An MG’s GTO switch failure (GSF) in three-phase (3Ph) VSI can result in several issues, such as diminished power production, safety issues, unstable voltage and frequency, loss of grid connection, overcurrent or overvoltage situations, and operational downtime. Minimizing the impact of such issues on MG operations requires careful maintenance, monitoring, and fault detection techniques. An approach to determine GSF in a PV system-connected 3Ph VSI for the MG application is demonstrated in this study. To identify GSF, a Fast Fourier Transform (FFT) based analysis of the 3Ph VSI’s output current signal has been conducted. |
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List of References |
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