Title :
A Unified Approach to Back-EMF Detection for Brushless DC Motor Drives without Current and Hall Sensors
Author :
Lai, Yen Shin ; Lin, Young Kai
Author_Institution :
Center for Power Electron. Technol., Nat. Taipei Univ. of Technol.
Abstract :
The main theme of this paper is to present a unified approach to back-EMF detection of brushless DC motor drives without using any current and Hall sensors. Theoretical analysis of back-EMF detection is presented, and followed by the relationship between PWM techniques and back-EMF detection. It will be shown that the back-EMF detection depends upon the PWM techniques and the method is required to be slightly modified as the PWM technique is changed. Experimental results derived from BLDCM drives without using any current and Hall sensors fully confirm the theoretical analysis
Keywords :
DC motor drives; brushless DC motors; electric potential; Hall sensors; PWM techniques; back-EMF detection; brushless DC motor drives; current sensors; Brushless DC motors; Choppers; Commutation; Filters; Leg; Power electronics; Pulse width modulation; Pulse width modulation inverters; Rails; Voltage; brushless DC motor drives; pulse-width modulation;
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
Print_ISBN :
1-4244-0390-1
DOI :
10.1109/IECON.2006.347571
