PMSM drive using digital hall position sensors for light EV applications

The paper proposes a practical solution for a permanent magnet synchronous motor (PMSM) using digital Hall position sensors. An improved estimation method for the electrical angle is used, based on a speed estimate and a specific correction algorithm. The speed estimation is implemented in a "m...

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Bibliographic Details
Published in2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) pp. 199 - 204
Main Authors Kreindler, L., Iacob, I., Casaru, G., Sarca, A., Olteanu, R., Matianu, D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2015
Subjects
Brushless motors
Commutation
Estimation
Hall sensors
Machine vector control
PMSM vector control
position estimation
Real-time systems
Sensors
speed estimation
Time measurement
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Summary:The paper proposes a practical solution for a permanent magnet synchronous motor (PMSM) using digital Hall position sensors. An improved estimation method for the electrical angle is used, based on a speed estimate and a specific correction algorithm. The speed estimation is implemented in a "moving average" manner and is obtained at each Hall transition, for the last electrical period movement. This eliminates problems associated to Hall misalignment and misplacement, while still keeping a 60-degree upgrade rate for the estimation process. The position angle estimate is also gradually corrected based on the angle error detected at each Hall transition. A second phase correction, important at higher speeds, is used to compensate delays between Hall transition and the real-time interrupt control routine performing the vector control algorithm. Experimental results obtained on a 5kW (48V, 100Arms) three-phase, DSP controlled drive are presented and successfully validate the proposed solution.
ISSN:2068-7966
DOI:10.1109/ATEE.2015.7133764