NDLI: A novel approach of rotor position detection for PM machines based on conventional PWM algorithms

Content Provider	IEEE Xplore Digital Library
Author	Chuanyang Wang Longya Xu
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA (Chuanyang Wang)
Abstract	Based on conventional PWM modulation techniques and low inductance characteristics of PM machines, this paper presents a novel and practical approach of rotor position estimation for a PM machine. In conventional PWM modulations such as sin-/spl Delta/ and Space Vector PWM techniques, there are three voltage vectors in action during each sampling period. For each different voltage vector, the phase current change will be different. By measuring the current changes under different voltage vectors, the back-EMF can be obtained and therefore the rotor position estimated. In this method, no prior knowledge of the machine parameters is needed. Further, at low speed, the back-EMF detection technique works well because the current ripples at very low speed are effectively utilized and no integration is needed. The proposed approach has been investigated by comprehensive computer simulation and the experimental testing results illustrate the effectiveness of the proposed approach.
Starting Page	547
Ending Page	553
File Size	583908
Page Count	7
File Format	PDF
ISBN	0780362624
DOI	10.1109/NAECON.2000.894959
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-10-12
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Voltage Frequency Space vector pulse width modulation Current measurement Position measurement Velocity measurement Computer simulation Digital signal processing Tuning
Content Type	Text
Resource Type	Article

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