In this research, a novel approach is proposed to enhance the precision of current measurements in the Field-Oriented Control (FOC) algorithm. The FOC algorithm consists of several key components, and the Park transformation in the FOC involves the magnetic field angles. In traditional FOC algorithms, the rotor mechanical angle is used, instead of the magnetic field angle in the Park calculation. However, practical applications suffer from errors in the mechanical angle, leading to significant inaccuracies and disturbances in the transformed Iq and Id. This study introduces a method that calculates the magnetic field angle by utilizing the Alpha and Beta values obtained after the Clark transformation and the arctangent function applying. The resulting angle values from this approach are closer to the actual magnetic field angle, thereby improving the precision of the transformed Iq and Id after the Park transformation. The feasibility of this method is verified by simulation with Simulink, and physical test with the design hardware platform.
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