Hardware Implementation of A High Speed Inverse Park Transformation Using CORDIC and PLL for FOC Brushless Servo Drive

A. S. N. Mokhtar, M. B. I. Reaz, Mohd Marufuzzaman, M. A. M. Ali

Abstract


Field Oriented Control in Permanent Magnet Synchronous Motor needs a quick computation in extremely short time to get an optimal efficiency and stability of the motor. The aim of this research is to present a fully integrated solution of inverse Park transformation by incorporating Coordinate Rotation Digital Computer, ARITHMETIC and Phase-locked Loop (PLL) module. But, the main problem in presenting such solution lies in completing the transformation within a limited clock cycles to pledge the steadiness of the motor where presently is the main issues of this industry. This research presents a transformation that works within 4 clock cycles with an execution time of 160ns of 24MHz frequency with an accuracy of 99.9 % which is the lowest computational cycle for the era.

DOI: http://dx.doi.org/10.5755/j01.eee.19.3.1267


Keywords


Phase locked loops; brushless machines; CORDIC; inverse park transformation; servomotors; field oriented control

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Print ISSN: 1392-1215
Online ISSN: 2029-5731