Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/72649
Title: Further developments in indirect-rotor position sensing of variable-reluctance motors using waveform-detection technique
Authors: Panda, S.K. 
Leong, K.C.
Lau, W.T.J.
Lock, K.S. 
Issue Date: 1993
Source: Panda, S.K.,Leong, K.C.,Lau, W.T.J.,Lock, K.S. (1993). Further developments in indirect-rotor position sensing of variable-reluctance motors using waveform-detection technique. IECON Proceedings (Industrial Electronics Conference) 2 : 1009-1014. ScholarBank@NUS Repository.
Abstract: The waveform-detection technique detects rotor position in variable-reluctance motors indirectly by monitoring rise or fall times of the chopped phase current waveform. The chop rise and fall times can be either of an active or inactive phase. The drawbacks of monitoring chop current rise and fall times of an active phase have already been analyzed and presented in [2], [3], [4]. In this paper an investigation is made for using chop phase current rise time of an inactive phase for rotor position detection. A digital controller based on the waveform-detection technique which uses the inactive phase chop current rise time is implemented. The analysis together with experimental results obtained by applying the controller to drive a 3-phase VR step motor suggest that: the use of chop current rise-time leads to instability in the drive system and hence is not recommended. On the other hand, chop fall-time provides stable operation and therefore, is recommended. An algorithm implemented to start and run the VR step motor from stand-still position maintaining correct direction of rotation is also presented.
Source Title: IECON Proceedings (Industrial Electronics Conference)
URI: http://scholarbank.nus.edu.sg/handle/10635/72649
ISBN: 0780308913
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

26
checked on Dec 9, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.