Stepping and switched reluctance motors
Abstract
The key features that link the relatively small stepping motor with the much larger switched reluctance (SR) motor are that they have salient poles on both rotor and stator; the torque-producing mechanism is the same for both; and they only became practicable with the arrival of power electronics. The difference is that the stepping motor is used primarily for low-power open-loop position control, while the SR drive competes in the medium power industrial drive area. The descriptive and graphical approach in this chapter reflects the lack of an easy analytical treatment of doubly salient machines, but nevertheless provides a grasp of the essential performance and design constraints for ...
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