Question
Download Solution PDFWhich of the following features is/are relevant to variable reluctance stepper motors?
1. Smaller rotor mass; more responsive
2. Step size is small
3. More sluggish
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The Variable reluctance stepper motor is characterized by the fact that there is no permanent magnet either on the rotor or the stator.
As the rotor is made up of soft-iron in case of variable reluctance motor, it has small rotor mass, hence it is quick in response.
Advantages:
1. High torque to inertia ratio.
2. High rates of acceleration.
3. Fast dynamic response.
4. Simple and low-cost machine.
5. Rotor construction is robust due to the absence of brushes.
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