Current-mode sensorless control of single-phase brushless DC fan motors

Wei Chao Chen*, Ying-Yu Tzou

*Corresponding author for this work

研究成果: Conference contribution同行評審

4 引文 斯高帕斯(Scopus)

摘要

This paper proposes a new control scheme for the implementation of a low-cost and high efficiency sensorless speed control IC for single-phase brushless dc (BLDC) fan motors. The proposed control scheme detects the zero-crossing-point (ZCP) of the measured back-EMF to generate commutation signals without Hall sensor. A current mode soft switching scheme is used to smooth the current spikes induced by the reduction of the back-EMF when the rotor is crossing the commutation boundary. An adaptive blanking time control strategy is used to adjust the time interval to ensure correct detection of the ZCP. An open-loop constant Ampere/Hertz ramping control scheme is developed for the startup control from zero speed and switching to sensorless mode once the ZCP is detected. The proposed sensorless control scheme has been verified by using computer simulation based on a developed single-phase BLDC fan motor model. Experimental verification of the proposed control scheme has been carried out by using digital implementation technique. Experimental results reveal the superior performance of the proposed control scheme.

原文English
主出版物標題2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011
頁面659-663
頁數5
DOIs
出版狀態Published - 1 十二月 2011
事件2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011 - Singapore, Singapore
持續時間: 5 十二月 20118 十二月 2011

出版系列

名字Proceedings of the International Conference on Power Electronics and Drive Systems

Conference

Conference2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011
國家Singapore
城市Singapore
期間5/12/118/12/11

指紋 深入研究「Current-mode sensorless control of single-phase brushless DC fan motors」主題。共同形成了獨特的指紋。

引用此