Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation

Conventional position sensors for permanent magnet synchronous motor, such as optical encoder, resolver, or hall sensor, can get fault by the stress. The fault of the motor position sensor may cause serious accidents. Thus, to prevent damages by the position sensor failure, adding a redundancy senso...

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Main Authors: Jun-Hyuk Im, Jin Hur
Format: Article
Language:English
Published: IEEE 2021-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9540653/
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author Jun-Hyuk Im
Jin Hur
author_facet Jun-Hyuk Im
Jin Hur
author_sort Jun-Hyuk Im
collection DOAJ
description Conventional position sensors for permanent magnet synchronous motor, such as optical encoder, resolver, or hall sensor, can get fault by the stress. The fault of the motor position sensor may cause serious accidents. Thus, to prevent damages by the position sensor failure, adding a redundancy sensor such as wound search coil is recommendable. In this paper, a new planar search coil design that can be used as a position sensor for permanent magnet synchronous motor is proposed. This new design is a planar coil based on a flexible-printed circuit board that converts airgap flux to a back-electromotive force signal. Unlike the wound search coil design, the proposed design is advantageous for manufacturing and slot-space preservation. Also, this new design is distant from the motor main winding. As a result, the exposure of the electrical and thermal stresses to the sensing coil can be decreased. This research shows the mathematical model for the design of the new planar-shaped airgap flux search coil design. In addition, the position estimation algorithm based on the new search coil design is shown. Finally, the position estimation using the new search coil design is presented.
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spelling doaj.art-30cac43d5cfa4002a62745cbb18ac80f2022-12-21T21:59:27ZengIEEEIEEE Access2169-35362021-01-01912907812908710.1109/ACCESS.2021.31133849540653Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position EstimationJun-Hyuk Im0https://orcid.org/0000-0002-5626-8909Jin Hur1https://orcid.org/0000-0002-0162-8225Department of Electrical Engineering, Incheon National University, Incheon, Republic of KoreaDepartment of Electrical Engineering, Incheon National University, Incheon, Republic of KoreaConventional position sensors for permanent magnet synchronous motor, such as optical encoder, resolver, or hall sensor, can get fault by the stress. The fault of the motor position sensor may cause serious accidents. Thus, to prevent damages by the position sensor failure, adding a redundancy sensor such as wound search coil is recommendable. In this paper, a new planar search coil design that can be used as a position sensor for permanent magnet synchronous motor is proposed. This new design is a planar coil based on a flexible-printed circuit board that converts airgap flux to a back-electromotive force signal. Unlike the wound search coil design, the proposed design is advantageous for manufacturing and slot-space preservation. Also, this new design is distant from the motor main winding. As a result, the exposure of the electrical and thermal stresses to the sensing coil can be decreased. This research shows the mathematical model for the design of the new planar-shaped airgap flux search coil design. In addition, the position estimation algorithm based on the new search coil design is shown. Finally, the position estimation using the new search coil design is presented.https://ieeexplore.ieee.org/document/9540653/Magnetic sensorspermanent magnet motorsposition measurementsearch coil
spellingShingle Jun-Hyuk Im
Jin Hur
Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation
IEEE Access
Magnetic sensors
permanent magnet motors
position measurement
search coil
title Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation
title_full Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation
title_fullStr Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation
title_full_unstemmed Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation
title_short Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation
title_sort proposing new planar type search coil for permanent magnet synchronous motor design and application for position estimation
topic Magnetic sensors
permanent magnet motors
position measurement
search coil
url https://ieeexplore.ieee.org/document/9540653/
work_keys_str_mv AT junhyukim proposingnewplanartypesearchcoilforpermanentmagnetsynchronousmotordesignandapplicationforpositionestimation
AT jinhur proposingnewplanartypesearchcoilforpermanentmagnetsynchronousmotordesignandapplicationforpositionestimation