Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment
Mechanical model is generally required in high dynamic sensorless motor control schemes for zero phase lag estimation of rotor position and speed. However, the rotational inertia uncertainty will cause dynamic estimation errors, eventually resulting in performance deterioration of the sensorless con...
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2016-12-01
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Series: | Advances in Mechanical Engineering |
Online Access: | https://doi.org/10.1177/1687814016684745 |
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doaj-1d16d23199f0481585e5c3fa4646bfec2020-11-25T03:44:12ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402016-12-01910.1177/168781401668474510.1177_1687814016684745Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustmentYongle Mao0Jiaqiang Yang1Dejun Yin2Yangsheng Chen3College of Electrical Engineering, Zhejiang University, Hangzhou, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou, ChinaMechanical model is generally required in high dynamic sensorless motor control schemes for zero phase lag estimation of rotor position and speed. However, the rotational inertia uncertainty will cause dynamic estimation errors, eventually resulting in performance deterioration of the sensorless control system. Therefore, this article proposes a high dynamic performance sensorless control strategy with online adjustment of the rotational inertia. Based on a synthetic back electromotive force model, the voltage equation of interior permanent magnet synchronous motor is transformed to that of an equivalent non-salient permanent magnet synchronous motor. Then, an extended nonlinear observer is designed for interior permanent magnet synchronous motor in the stator-fixed coordinate frame, with rotor position, speed and load torque simultaneously estimated. The effect of inaccurate rotational inertia on the estimation of rotor position and speed is investigated, and a novel rotational inertia adjustment approach that employs the gradient descent algorithm is proposed to suppress the dynamic estimation errors. The effectiveness of the proposed control strategy is demonstrated by experimental tests.https://doi.org/10.1177/1687814016684745 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yongle Mao Jiaqiang Yang Dejun Yin Yangsheng Chen |
spellingShingle |
Yongle Mao Jiaqiang Yang Dejun Yin Yangsheng Chen Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment Advances in Mechanical Engineering |
author_facet |
Yongle Mao Jiaqiang Yang Dejun Yin Yangsheng Chen |
author_sort |
Yongle Mao |
title |
Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment |
title_short |
Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment |
title_full |
Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment |
title_fullStr |
Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment |
title_full_unstemmed |
Sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment |
title_sort |
sensorless interior permanent magnet synchronous motor control with rotational inertia adjustment |
publisher |
SAGE Publishing |
series |
Advances in Mechanical Engineering |
issn |
1687-8140 |
publishDate |
2016-12-01 |
description |
Mechanical model is generally required in high dynamic sensorless motor control schemes for zero phase lag estimation of rotor position and speed. However, the rotational inertia uncertainty will cause dynamic estimation errors, eventually resulting in performance deterioration of the sensorless control system. Therefore, this article proposes a high dynamic performance sensorless control strategy with online adjustment of the rotational inertia. Based on a synthetic back electromotive force model, the voltage equation of interior permanent magnet synchronous motor is transformed to that of an equivalent non-salient permanent magnet synchronous motor. Then, an extended nonlinear observer is designed for interior permanent magnet synchronous motor in the stator-fixed coordinate frame, with rotor position, speed and load torque simultaneously estimated. The effect of inaccurate rotational inertia on the estimation of rotor position and speed is investigated, and a novel rotational inertia adjustment approach that employs the gradient descent algorithm is proposed to suppress the dynamic estimation errors. The effectiveness of the proposed control strategy is demonstrated by experimental tests. |
url |
https://doi.org/10.1177/1687814016684745 |
work_keys_str_mv |
AT yonglemao sensorlessinteriorpermanentmagnetsynchronousmotorcontrolwithrotationalinertiaadjustment AT jiaqiangyang sensorlessinteriorpermanentmagnetsynchronousmotorcontrolwithrotationalinertiaadjustment AT dejunyin sensorlessinteriorpermanentmagnetsynchronousmotorcontrolwithrotationalinertiaadjustment AT yangshengchen sensorlessinteriorpermanentmagnetsynchronousmotorcontrolwithrotationalinertiaadjustment |
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