There are many configurations of ac synchronous motors in which semiconductor control is used for controlling the stator currents in such a way that maximum torque is obtained at a given speed. Such configurations can be termed as brushless dc motors (or BLDC motors). Fig. 1: Construction of BLDC motor.
Variable reluctance stepper motor employs the principle of minimum reluctance path i.e. the magnetic circuit gets completed by the flux taking the minimum reluctance path, just as in electric circuit, the current takes the minimum resistance path. Depending on the stator excitations the motor aligns itself so as to provide a minimum reluctance path for
What is Variable Reluctance Stepper Motor? Working, Diagram & Construction Read More »
Synchronous Motor needs initial starting torque. For this purpose different methods can be used.
Synchronous Motor Starting Methods Read More »