1. Open-fault diagnosis and tolerant control of a dual inverter fed open-end winding interior permanent magnet synchronous motor.
- Author
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Lee, Hyung-Woo and Lee, Kyo-Beum
- Subjects
- *
PERMANENT magnet motors , *ELECTRIC inverters , *FAULT-tolerant control systems , *IDEAL sources (Electric circuits) , *STATORS - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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