Abstract
The methods of winding switching over for various motor configurations have extensively been proposed in the literature to provide enough torque and speed for vehicles. However, some problems occurred during changeover operation. In the paper, three signal processing algorithms, 30-degree phase shift emulation, novel changeover technique, and frequency-independent phase shifting, on Hall sensor signals are proposed to overcome the related problems. These schemes both protect the related hardware and preserve the torque/speed performance. The experimental results will demonstrate the effectiveness.
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