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Advisor(s)
Abstract(s)
Nine-switch voltage source inverters (NSVSI) are DC-AC converters that utilize a reduced number of switches,
making them advantageous for dual or six-phase motors. To enhance the quality of the output voltage and provide fault tolerant capability, NSVSI topologies, like the T-Type-based NSVSI, have been modified to operate as multilevel converters. However, to ensure fault-tolerant capability, a fault diagnosis algorithm for power transistors must be developed. Therefore, this paper proposes a novel fault detection and diagnosis algorithm to identify faulty transistors in a multilevel T-Type-based NSVSI. This method is based on the development of specific indices derived from the center of mass of the output currents. The proposed technique offers a fast and reliable solution, demonstrating robustness under various load conditions. The
effectiveness of this method will be validated through a series of simulation tests.
Description
Keywords
nine-switch inverter multilevel converters fault detection and diagnosis switch fault
Citation
MONTEIRO, J. [et al] – Diagnosing Power Transistor Faults in Multilevel T - Type Based Nine Switch Inverter Using Center of Mass Indexes. In 2024 13th International Conference on Renewable Energy Research and Applications (ICRERA), Nagasaki, Japan, 2024, pp. 217-222, doi: 10.1109/ICRERA62673.2024.10815211.
Publisher
IEEE