The 9th International Symposium on ADVANCED TOPICS IN ELECTRICAL ENGINEERING 2015

Papers Proceedings »

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 “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.

Author(s):

Liviu Kreindler    
Polytechnic University of Bucharest, Technosoft
Romania

Iulian Iacob    
Technosoft
Romania

George Casaru    
Technosoft
Romania

Aurelian Sarca    
Polytechnic University of Bucharest, Technosoft
Romania

Ramona Olteanu    
Technosoft
Romania

Dragos Matianu    
Technosoft
Romania

 

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