DocumentCode :
2800553
Title :
New method for current and voltage measuring offset correction in an induction motor sensorless drive
Author :
Pantic, Zeljko ; Ballal, Siddharth ; Lukic, Srdjan
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fYear :
2010
fDate :
12-16 Sept. 2010
Firstpage :
23
Lastpage :
30
Abstract :
This paper presents a new algorithm for electromagnetic torque and flux estimation in a sensorless drive when uncompensated dc offset of current and/or voltage sensors are present. The novel feature of the offset error correction algorithm is an attempt not to eliminate the consequence of problem but to identify its source. The algorithm uses the first harmonic of estimated torque and dc value of estimated stator flux to identify the source and value of the current and/or voltage offset error. Identified values can be used for offset cancelation which improves estimation process.
Keywords :
electric current measurement; electric sensing devices; induction motor drives; magnetic flux; sensorless machine control; stators; torque; voltage measurement; current measuring offset error correction; current sensor; dc offset; electromagnetic torque estimation; flux estimation; induction motor sensorless drive; stator flux; voltage measuring offset error correction; voltage sensor; Current measurement; Estimation; Induction motors; Sensors; Stators; Torque; Voltage measurement; Induction motors; motor drives; sensorless control; vector control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
Type :
conf
DOI :
10.1109/ECCE.2010.5618152
Filename :
5618152
Link To Document :
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