Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors

Jongman Hong; Sanguk Park; Doosoo Hyun; Tae June Kang; Sang Bin Lee; Christian Kral; Anton Haumer

doi:10.1109/TIA.2012.2191253

Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors

Jongman Hong, Sanguk Park, Doosoo Hyun, Tae June Kang, Sang Bin Lee, Christian Kral, Anton Haumer

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

160 Citations (Scopus)

Abstract

Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent-magnet synchronous motors (PMSMs) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the offline and online methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped and to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a direct- current+alternating-current signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5-kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity.

Original language	English
Article number	6171844
Pages (from-to)	923-932
Number of pages	10
Journal	IEEE Transactions on Industry Applications
Volume	48
Issue number	3
DOIs	https://doi.org/10.1109/TIA.2012.2191253
Publication status	Published - 2012

Keywords

Alternating-current (ac) machine
condition monitoring
d-axis inductance
demagnetization
eccentricity
magnetic saturation
permanent magnet (PM)
synchronous motor (SM)

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/TIA.2012.2191253

Cite this

@article{e0324f7693b04dd3af2dd86ac147568a,

title = "Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors",

abstract = "Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent-magnet synchronous motors (PMSMs) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the offline and online methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped and to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a direct- current+alternating-current signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5-kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity.",

keywords = "Alternating-current (ac) machine, condition monitoring, d-axis inductance, demagnetization, eccentricity, magnetic saturation, permanent magnet (PM), synchronous motor (SM)",

author = "Jongman Hong and Sanguk Park and Doosoo Hyun and Kang, {Tae June} and Lee, {Sang Bin} and Christian Kral and Anton Haumer",

note = "Funding Information: Manuscript received October 19, 2011; accepted January 10, 2012. Date of publication March 19, 2012; date of current version May 15, 2012. Paper 2011-EMC-537, presented at the 2011 IEEE Energy Conversion Congress and Exposition, Phoenix, AZ, September 17–22, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. This work was supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (20114010203010).",

year = "2012",

doi = "10.1109/TIA.2012.2191253",

language = "English",

volume = "48",

pages = "923--932",

journal = "IEEE Transactions on Industry Applications",

issn = "0093-9994",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "3",

}

TY - JOUR

T1 - Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors

AU - Hong, Jongman

AU - Park, Sanguk

AU - Hyun, Doosoo

AU - Kang, Tae June

AU - Lee, Sang Bin

AU - Kral, Christian

AU - Haumer, Anton

N1 - Funding Information: Manuscript received October 19, 2011; accepted January 10, 2012. Date of publication March 19, 2012; date of current version May 15, 2012. Paper 2011-EMC-537, presented at the 2011 IEEE Energy Conversion Congress and Exposition, Phoenix, AZ, September 17–22, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. This work was supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (20114010203010).

PY - 2012

Y1 - 2012

N2 - Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent-magnet synchronous motors (PMSMs) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the offline and online methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped and to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a direct- current+alternating-current signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5-kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity.

AB - Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent-magnet synchronous motors (PMSMs) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the offline and online methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped and to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a direct- current+alternating-current signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5-kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity.

KW - Alternating-current (ac) machine

KW - condition monitoring

KW - d-axis inductance

KW - demagnetization

KW - eccentricity

KW - magnetic saturation

KW - permanent magnet (PM)

KW - synchronous motor (SM)

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JF - IEEE Transactions on Industry Applications

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ER -

Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors

Abstract

Keywords

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