Hyung-Woo Lee and Kyo-Beum Lee, "Open-fault Diagnosis and Tolerant Control of a Dual Inverter Fed Open-end Winding Interior Permanent Magnet Synchronous Motor," Journal of Power Electronics, in press. -SCIE > Paper

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International Journals Hyung-Woo Lee and Kyo-Beum Lee, "Open-fault Diagnosis and Tolerant Control of a Dual Inverter Fed Open-end Winding Interior Permanent Magnet Synchronous Motor," Journal of Power Electronics, in press. -SCIE

2024

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This paper proposes a diagnostic and fault-tolerant method for an open-fault condition in dual inverters with open-end winding interior permanent 

magnet synchronous motors (OEW-IPMSMs). Certain switch pairs show similar behavior in the output current in an open-fault condition due to the 

structural characteristics of the two-level dual inverter. This work presents a method for detecting open-fault conditions and ensuring a fault-tolerant 

operation. The proposed method is applied in dual inverters with isolated voltage sources for driving OEW-IPMSM. In the event of an open-fault 

condition, a pair of switches containing the faulty switch is identified based on the stator current. Subsequently, the switch with the open-fault 

condition is determined, and fault-tolerant control for a faulty switch is immediately performed through a single-mode operation using zero-voltage 

vectors. The effectiveness of the proposed detection and tolerant control method is confirmed through simulation and experimental results.

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