Abstract
Increasing penetration of the Photovoltaic (PV) systems in electric power generation sector entails high-reliability grid-connected PV inverters. In fact, inverter faults are one of the most common root causes for PV system failures that significantly increase the levelized cost of energy (LCOE). Meanwhile, higher voltage levels are favorable for utility-scale PV applications due to higher energy efficiency. Hence, a novel fault-tolerant four-leg five-level active neutral point clamped (5L-ANPC) inverter is proposed in this paper. In a fault scenario, the fourth leg can replace any of the faulty phases of the inverter to provide the fault-tolerant capability for post-fault operation. In normal healthy condition, the fourth-leg can be used for heavy-load current sharing to mitigate the thermal stress on the semiconductor devices of the main phase legs, which further enhances the PV system reliability. Simulation results are demonstrated to verify the effectiveness of the proposed PV inverter.
Original language | English |
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Title of host publication | 2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021 |
Pages | 395-400 |
Number of pages | 6 |
ISBN (Electronic) | 9781728192970 |
DOIs | |
State | Published - 2021 |
Event | 13th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021 - Dallas, United States Duration: Aug 22 2021 → Aug 25 2021 |
Publication series
Name | 2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021 |
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Conference
Conference | 13th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021 |
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Country/Territory | United States |
City | Dallas |
Period | 8/22/21 → 8/25/21 |
Bibliographical note
Publisher Copyright:© 2021 IEEE.
Keywords
- Fault tolerance
- LCOE reduction
- Photovoltaic systems
- PV inverter
- Reliability
- Utility scale
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Mechanical Engineering
- Safety, Risk, Reliability and Quality