A Sensorless Control Algorithm for the Circular Winding Brushless DC Motor Based on Phase Voltages and DC Current Detection

Circular winding brushless dc (CWBLdc) motor is a novel square-wave multiphase permanent magnet motor with high torque density and excellent vibration performance. It has good prospect in high power and performance applications. However, the control of CWBLdc motor depends on a precise rotor position. Consequently, its application is restricted in some situations where it is difficult to install p...