A Novel Twelve-Step Sensorless Drive Scheme for a Brushless DC Motor

This paper presents a novel twelve-step sensorless drive scheme for a three-phase brushless DC motor, which combines the traditional six-step 120deg and 180deg conduction modes and has varied active angular period. The proposed scheme is implemented on a single FPGA-chip. Several experiments for var...

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Veröffentlicht in:	IEEE transactions on magnetics 2007-06, Vol.43 (6), p.2555-2557
Hauptverfasser:	WANG, Chao-Min, WANG, Shyh-Jier, LIN, Shir-Kuan, LIN, Hsing-Yu
Format:	Artikel
Sprache:	eng
Schlagworte:	Back EMF brushless DC motor Brushless DC motors Brushless motors Chaos Commutation Control engineering Cross-disciplinary physics: materials science rheology Delay Direct current Electric motors Exact sciences and technology Industrial control Magnetism Materials science Other topics in materials science Phase detection Physics sensorless drive Synchronous motors Torque Voltage zero-crossing
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Beschreibung
Zusammenfassung:	This paper presents a novel twelve-step sensorless drive scheme for a three-phase brushless DC motor, which combines the traditional six-step 120deg and 180deg conduction modes and has varied active angular period. The proposed scheme is implemented on a single FPGA-chip. Several experiments for various active angle periods from 124deg to 168.75deg are undertaken. The experimental results show that the torque constant is larger for the larger active angular period
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2007.892327