Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor
碩士 === 國立臺北科技大學 === 電機工程系電力電子產業碩士專班 === 106 === The sensorless control strategies for PMSM drives mainly include high frequency (HF) injection and position observer based on motor model. The information of rotor position depends on the inductance difference between q axis and d axis for low speed. D...
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ndltd-TW-106TIT0544A0072019-05-16T01:40:43Z http://ndltd.ncl.edu.tw/handle/39b5nc Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor 用於表面貼磁永磁同步馬達之無轉子位置感測元件之速度控制 Ting-Jhou Lin 林庭州 碩士 國立臺北科技大學 電機工程系電力電子產業碩士專班 106 The sensorless control strategies for PMSM drives mainly include high frequency (HF) injection and position observer based on motor model. The information of rotor position depends on the inductance difference between q axis and d axis for low speed. Due to the saliency ratio of SPM is relatively small, it’s hard to estimate the rotor position by the characteristics of inductance. A sensorless speed control is proposed in this thesis. The phenomenon of current rise caused by the saturation of inductance, when the rotor magnet is approaching to the stator coil, is utilized as the detection basis at standstill. To identify the state of the six current vectors and their magnitudes under 180 degree conduction, thereby the rotor position is estimated at standstill. Then, the 120 degree commutation is applied for low speed operation. The magnetic saturation occurs when the rotor magnet is close to the excitation stator windings, therefore the open phase winding will yields an electromotive force due to the change of magnetic flux. The current commutation of six-switches is according to detect the open phase voltage within six switch states. Finally, a DSP-based(TMS320F28035) motor drive is built to verify the effectiveness of the proposed strategy with a 350W/6000rpm SPM. 黃明熙 2018 學位論文 ; thesis 52 zh-TW |
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碩士 === 國立臺北科技大學 === 電機工程系電力電子產業碩士專班 === 106 === The sensorless control strategies for PMSM drives mainly include high frequency (HF) injection and position observer based on motor model. The information of rotor position depends on the inductance difference between q axis and d axis for low speed. Due to the saliency ratio of SPM is relatively small, it’s hard to estimate the rotor position by the characteristics of inductance. A sensorless speed control is proposed in this thesis. The phenomenon of current rise caused by the saturation of inductance, when the rotor magnet is approaching to the stator coil, is utilized as the detection basis at standstill. To identify the state of the six current vectors and their magnitudes under 180 degree conduction, thereby the rotor position is estimated at standstill. Then, the 120 degree commutation is applied for low speed operation. The magnetic saturation occurs when the rotor magnet is close to the excitation stator windings, therefore the open phase winding will yields an electromotive force due to the change of magnetic flux. The current commutation of six-switches is according to detect the open phase voltage within six switch states.
Finally, a DSP-based(TMS320F28035) motor drive is built to verify the effectiveness of
the proposed strategy with a 350W/6000rpm SPM.
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author2 |
黃明熙 |
author_facet |
黃明熙 Ting-Jhou Lin 林庭州 |
author |
Ting-Jhou Lin 林庭州 |
spellingShingle |
Ting-Jhou Lin 林庭州 Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor |
author_sort |
Ting-Jhou Lin |
title |
Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor |
title_short |
Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor |
title_full |
Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor |
title_fullStr |
Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor |
title_full_unstemmed |
Sensorless Speed Control for Surface Permanent Magnet Synchronous Motor |
title_sort |
sensorless speed control for surface permanent magnet synchronous motor |
publishDate |
2018 |
url |
http://ndltd.ncl.edu.tw/handle/39b5nc |
work_keys_str_mv |
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