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For a reluctance motor, the maximum average torque occurs when δ = __________

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+1 vote
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in Electrical Machines by (135k points)
For a reluctance motor, the maximum average torque occurs when δ = __________

(a) 45°

(b) 90°

(c) 0°

(d) 180°

I have been asked this question in final exam.

The origin of the question is Reluctance Motor in portion Basic Concepts in Rotating Machines of Electrical Machines

1 Answer

+1 vote
by (888k points)
Correct option is (a) 45°

Best explanation: The equation for average torque is Te(av)=1/8 ∅max^2(Rlq – Rld)sin⁡(2δ), and it is maximum when δ=45°.

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