Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver
碩士 === 國立臺北科技大學 === 車輛工程系所 === 103 === This thesis proposed a novel sensorless control for in-wheel brushless DC motor (BLDCM), widely used on electric scooter or pedelec. The proposed method is based on back electromotive force (back-EMF) of BLDCM. Firstly, the motor driver could differentiate the...
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ndltd-TW-103TIT051620232019-07-14T03:34:05Z http://ndltd.ncl.edu.tw/handle/68u8cx Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver 以微分法實現無感測器控制之直流無刷馬達驅動器 Yu-Cheng Chou 周煜晟 碩士 國立臺北科技大學 車輛工程系所 103 This thesis proposed a novel sensorless control for in-wheel brushless DC motor (BLDCM), widely used on electric scooter or pedelec. The proposed method is based on back electromotive force (back-EMF) of BLDCM. Firstly, the motor driver could differentiate the trapezoidal back-EMF by a OPA-type differentiator to obtain the timing of upper and lower base of three phase back-EMF. Besides, these timing are also the six sections of six-step square wave motor drive, and the driving condition of sensorless control. According to the differential results, the differential back-EMF could be separated into zero, positive, and negative, and these signals could be turned into the commutation signal on the basis of the computation of the Microcontroller Unit (MCU). Hence, turning on/off the corresponding MOSFETs of six sections will reach sensorless driving motor. Finally, this thesis verifies the feasibility of proposed method of sensorless control by a BLDCM with 48V/500W and the platform of dynamometer. Ming-Ji Yang 楊銘基 學位論文 ; thesis 0 zh-TW |
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碩士 === 國立臺北科技大學 === 車輛工程系所 === 103 === This thesis proposed a novel sensorless control for in-wheel brushless DC motor (BLDCM), widely used on electric scooter or pedelec. The proposed method is based on back electromotive force (back-EMF) of BLDCM. Firstly, the motor driver could differentiate the trapezoidal back-EMF by a OPA-type differentiator to obtain the timing of upper and lower base of three phase back-EMF. Besides, these timing are also the six sections of six-step square wave motor drive, and the driving condition of sensorless control. According to the differential results, the differential back-EMF could be separated into zero, positive, and negative, and these signals could be turned into the commutation signal on the basis of the computation of the Microcontroller Unit (MCU). Hence, turning on/off the corresponding MOSFETs of six sections will reach sensorless driving motor. Finally, this thesis verifies the feasibility of proposed method of sensorless control by a BLDCM with 48V/500W and the platform of dynamometer.
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author2 |
Ming-Ji Yang |
author_facet |
Ming-Ji Yang Yu-Cheng Chou 周煜晟 |
author |
Yu-Cheng Chou 周煜晟 |
spellingShingle |
Yu-Cheng Chou 周煜晟 Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver |
author_sort |
Yu-Cheng Chou |
title |
Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver |
title_short |
Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver |
title_full |
Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver |
title_fullStr |
Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver |
title_full_unstemmed |
Implementation of Sensorless Control by Differentiation Method for Brushless DC Motor Driver |
title_sort |
implementation of sensorless control by differentiation method for brushless dc motor driver |
url |
http://ndltd.ncl.edu.tw/handle/68u8cx |
work_keys_str_mv |
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