2010
IMAACA 2010 Proceeding
Experimental assessment of trapezoidal commutation and FOC performances of 3-phase permanent magnet brushless motor
Authors: Rachid Askour, Badr Bououlid
Abstract
In this paper, we present experimental results of 3-phase permanent magnet brushless motor speed control using trapezoidal commutation (BLDC mode) and Field Oriented control (BLAC mode). Two control applications have been developed in C language and implemnted using the Texas Instruments TMS320LF2812 digital signal processor (DSP). This new processor enables intelligent control for motors. We used to test the drive a professional development kit available from Technosoft company. This paper discusses the DSP real implementation of speed control (Current sensing and scaling, software organization, etc.). Dynamic performances are compared for the two modes in the case of speed reversal test at no-load conditions. We also present the real-time armature current logged at load conditions in both BLAC and BLDC modes. An evaluation of the results is presented and digital implementation aspects are discussed.
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