Speed sensorless nonlinear control of induction motor in the field weakening region

In the paper it is presented speed sensorless nonlinear control system using multiscalar model based MMB operating in the lower field weakening speed region. Nonlinear control methods can improve the performance of induction motor drives in transients. The maximum available output torque, which guar...

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Bibliographic Details
Published in2008 13th International Power Electronics and Motion Control Conference pp. 1084 - 1089
Main Authors Wlas, M., Abu-Rub, H., Holtz, J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2008
Subjects
Flux model
Induction motor
Induction motors
Inverters
Non-linear control
Observers
Rotors
Sensorless control
Stators
Torque
Voltage control
Voltage Source Inverters (VSI)
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Summary:In the paper it is presented speed sensorless nonlinear control system using multiscalar model based MMB operating in the lower field weakening speed region. Nonlinear control methods can improve the performance of induction motor drives in transients. The maximum available output torque, which guarantees satisfactory motor dynamics in field weakening region, is calculated using the steady state dependencies of induction motor model. Full dynamic reaction to commanded changes or to disturbances that occur during operation at the voltage limit is enabled by reducing the excitation level in a fastest possible way. Experimental results are presented to demonstrate reliability of proposed controller. In the experimental implementation a 22 kW induction motor is used. The whole control scheme (including multiscalar control, speed computation and space vector PWM) are implemented on a DSP and FPGA.
ISBN:9781424417414
1424417414
DOI:10.1109/EPEPEMC.2008.4635412