Simplified Impedance Modeling and Analysis for Inter-Turn Fault of IPM-type BLDC motor

Byeong-Woo Kim; Kyung-Tae Kim; Jin Hur

Simplified Impedance Modeling and Analysis for Inter-Turn Fault of IPM-type BLDC motor

Byeong-Woo Kim

Kyung-Tae Kim

Jin Hur

Vol. 12, No. 1, pp. 10-18, Jan. 2012

10.6113/JPE.2012.12.1.10

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Abstract

This paper proposes a finite element method (FEM)-based model of an interior permanent magnet (IPM)?type BLDC motor having stator inter-turn faults. We also propose impedance modeling of the magnetic characteristics. By integrating the developed model with a current-controlled voltage source inverter (CCVSI) model, the distributed characteristics of an inter-turn fault operated by a six-switch inverter are investigated considering speed control. Moreover, this paper presents the flux density distribution and torque characteristics for analyzing the inter-turn fault of an IPM-type BLDC motor. Additionally, fault impedance is required to calculate the circulating current that causes magnetic distortion. Thus, this paper proposes a method for estimating the circulating current taking into account the voltage at the shorted turn and the rotating speed. The analysis data were verified experimentally.

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Cite this article

[IEEE Style]

B. Kim, K. Kim, J. Hur, "Simplified Impedance Modeling and Analysis for Inter-Turn Fault of IPM-type BLDC motor," Journal of Power Electronics, vol. 12, no. 1, pp. 10-18, 2012. DOI: 10.6113/JPE.2012.12.1.10.

[ACM Style]

Byeong-Woo Kim, Kyung-Tae Kim, and Jin Hur. 2012. Simplified Impedance Modeling and Analysis for Inter-Turn Fault of IPM-type BLDC motor. Journal of Power Electronics, 12, 1, (2012), 10-18. DOI: 10.6113/JPE.2012.12.1.10.