Conference Proceeding

A low memory disturbance elimination method for sensorless control of induction motor drive using test vector injection

Sch. of Electr. & Electron. Eng., Nottingham Univ.
12/2006; DOI:10.1109/IECON.2006.347447 pp.1071 - 1076 In proceeding of: IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Source: IEEE Xplore

ABSTRACT This paper presents an enhanced method for both speed and rotor position estimation in induction motor drives. A modified INFORM method is used to excite magnetic saliencies in the motor created by saturation and rotor slotting, from which position signals can be derived. A new method is proposed for the elimination of second order saturation effects from position signals. This method significantly improves the quality of the rotor position estimate such that it can be used for indirect rotor flux vector control of 30 kW induction machine, but does not require extensive look-up tables stored within the controller. This "low memory" approach is suitable for both star and delta connected machines. Experimental results for the shaft sensorless control showing the tracking of rotor speed and position are presented

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Keywords

30 kW induction machine
 
delta
 
elimination
 
excite magnetic saliencies
 
extensive look-up tables
 
indirect rotor flux vector control
 
induction motor drives
 
low memory
 
paper presents
 
position signals
 
rotor position estimate
 
rotor position estimation
 
second order saturation effects
 
shaft sensorless control
 

P. Makys