Expeditious Identification of IGBT Switch Fault in Bidirectional Microgrid Inverter Linked to Distributed Energy Resources
| Authors | S.S. Ghosh1 , S. Chattopadhyay2, S.H. Arigela3, V.V. Kamesh4, A. Das1 , S. Das5 |
| Affiliations |
1Department of Electrical Engineering, Jadavpur University, Kolkata, West Bengal, India 2Department of Electrical Engineering, GKCIET, Malda, West Bengal, India 3Department of Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur District, Andhra Pradesh, India-522302 4Department of Mechanical Engineering, Aditya Engineering College, Surampalem East Godavari District, Andhra Pradesh-533437, India |
| Е-mail | ssghosh732103@gmail.com |
| Issue | Volume 16, Year 2024, Number 1 |
| Dates | Received 15 December 2023; revised manuscript received 17 February 2024; published online 28 February 2024 |
| Citation | S.S. Ghosh, S. Chattopadhyay, et al., J. Nano- Electron. Phys. 16 No 1, 01019 (2024) |
| DOI | https://doi.org/10.21272/jnep.16(1).01019 |
| PACS Number(s) | 84.70. + p, 88.80.hj |
| Keywords | Bidirectional DC/AC inverter (BDAI), Distributed energy resources (DERs), Fast fourier transform (FFT), IGBT (3) , Fault recognition, Microgrid. |
| Annotation |
In contemporary power electronics, Insulated Gate Bipolar Transistors (IGBTs) are extremely important for various reasons. IGBTs serve as vital components in microgrid inverters, providing the switching capabilities required to transform DC electricity from renewable sources into high-quality AC power for microgrid (MG) applications. A bidirectional inverter (BDI) is an essential component of a microgrid, allowing for the smooth integration of distributed energy resources (DERs) and supporting both grid-connected and islanded operations. In a bidirectional DC/AC inverter (BDAI), IGBTs play an important role in managing the flow of electricity in both directions. The consequences of bidirectional inverter’s IGBT failures on a microgrid might vary from small power quality concerns to more serious interruptions in stability and system performance. Therefore, IGBT should operate without failure. This paper illustrates a method for identifying an early IGBT switch failure (ISF) in a bidirectional microgrid inverter that is linked to a photovoltaic (PV) and battery energy storage system (BESS). An analysis of the inverter output current signal using the Fast Fourier Transform (FFT) has been undertaken to discover faults. Afterwards, the impacts on the DC, fundamental current component, and harmonic distortions have been investigated for various levels of fault. A successful detection of the ISF has been attempted, based on the best-fit features. An ISF detection algorithm also has been proposed. |
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