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http://dx.doi.org/10.21289/KSIC.2022.25.6.1003

Fault Tolerance Operation and Characteristics Analysis of Asymmetric Six-phase Permanent Magnet Synchronous Motor According to Switch Open  

Jun, So-Young (Electrical Engineering, Kyungnam University)
Hwang, Seon-Hwan (Dept. of Electrical Engineering, Kyungnam University)
Park, Jong-Won (GMB Korea)
Publication Information
Journal of the Korean Society of Industry Convergence / v.25, no.6_2, 2022 , pp. 1003-1008 More about this Journal
Abstract
This paper proposes a method related to fault tolerance operation and characteristic analysis of asymmetric 6-phase permanent magnet synchronous motor. In general, motor drive systems with multi-phase structures can be continuously operated despite a reduction of power and speed by using a phase changeover or control techniques according to the failures. As a result, it is widely used in industrial fields such as aviation and defense, which require high efficiency and high reliability. In this paper, the second order ripple of the electrical fundamental freuqnecy occurs in the dq-axis currents of the synchronous coordinate system through mathematical analysis according to the switch open of the dual 3-phase inverter. Therefore, the fault tolerant operation method is presented by applying the fault detection method with a constant cycle for continuous operations. The effectiveness of the proposed fault tolerance operation method is verified through the several experiments.
Keywords
Asymmetric 6-Phase Permanet Magnet Synchronous Motor; Switch Fault; Fault Detection; Fault Tolerant Operation;
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