DocumentCode :
3679321
Title :
Sensor-less vector control of the nine-phase concentrated wound interior permanent magnet motor drive using a unique third sequence high frequency injection into the stator windings
Author :
Olorunfemi Ojo;Mehdi Ramezani;Amrit Gautam
Author_Institution :
Department of Electrical and Computer Engineering/ Centre for Energy Systems Research, Tennessee Technological University, Cookeville, TN 38505, USA
fYear :
2015
Firstpage :
853
Lastpage :
859
Abstract :
This paper presents a sensor-less vector control method which estimates the rotor angle and speed of a nine-phase, Interior Permanent Magnet (IPM) machine with concentrated stator winding, especially for use at starting, zero and low speed operations. The injection of unique high frequency voltage signals into a non-torque producing third sequence circuit of the machine provides current information for the estimation of the rotor angle and speed without generating any high frequency torque ripple. The fundamental voltage component impressed on the motor by the converter, with the estimated rotor angle and rotor speed are used for the speed control of the motor drive under minimum stator copper loss operation. In order to computer simulate the complete controlled drive, including both the fundamental and high frequency components a full order model of the motor is utilized. The control and estimation strategies proposed have been implemented on a 2 hp, 36 slots, 4-pole concentrated stator wound interior permanent magnet motor drive. Some simulation based on a full order coupled machine model and experimental results validate the proposed vector control scheme for operation at both low and high speed operations.
Keywords :
"Rotors","Stator windings","Estimation","Copper","Permanent magnet motors","Torque"
Publisher :
ieee
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2015 IEEE
ISSN :
2329-3721
Electronic_ISBN :
2329-3748
Type :
conf
DOI :
10.1109/ECCE.2015.7309777
Filename :
7309777
Link To Document :
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