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Framework for sensitivity analysis of industry algorithms for sensorless PMSM drives

Saunders, Benjamin, Heins, Greg and De Boer, Friso G. (2011). Framework for sensitivity analysis of industry algorithms for sensorless PMSM drives. In: 21st Australasian Universities Power Engineering Conference, Brisbane, Qld., Australia, 25-28 September 2011.

Document type: Conference Paper

IRMA ID CDU0002xPUB80
Author Saunders, Benjamin
Heins, Greg
De Boer, Friso G.
Title Framework for sensitivity analysis of industry algorithms for sensorless PMSM drives
Conference Name 21st Australasian Universities Power Engineering Conference
Conference Location Brisbane, Qld., Australia
Conference Dates 25-28 September 2011
Conference Publication Title 21st Australasian Universities Power Engineering Conference
Place of Publication United States of America
Publisher IEEE Xplore
Publication Year 2011
ISBN 978-1-4577-1793-2   (check CDU catalogue open catalogue search in new window)
Total Pages 6
HERDC Category E1 - Conference Publication (DIISR)
Abstract The Permanent Magnet Synchronous Machine (PMSM) is gaining popularity in many applications due to its high efficiency and high power density. In order to achieve efficient and robust motor operation, motor position information is required. If active compensation of motor torque ripples is to be achieved in addition to simply rotating the motor the quality of the position information becomes even more important. Traditionally this position information is acquired through the use of a position sensor, however so called `sensorless' control schemes are now becoming a popular alternative. This paper presents a review of the sensorless position estimation algorithms which are being adopted by industry. A framework is developed to assess the sensitivity of these algorithms to errors in motor parameters and non-ideal aspects of the motor and controller. This framework is based around a MATLAB®/Simulink® simulation which includes these non-ideal aspects. The simulated control loop is designed to be very close to the control loop implemented on a DSP and used to run a real motor. Results for a simple back-EMF estimator show that a 10-bit or better analog to digital converter (ADC) gives good performance, the position estimation error is almost insensitive to resistance variation and a 20% change in inductance results in a 0.7% offset error in the position estimate.
Keyword Sensorless control
Permanent Magnet Synchronous Machine (PMSM)
Postition Estimation
Flux Estimatior
Back-EMF estimator
Sliding Mode Observer (SMO)
Sensitivity Analysis
Description for Link Link to conference paper
URL http://ieeexplore.ieee.org/xpl/articleDetails.jsp?&arnumber=6102564
 
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