Short note on 3point starter of dc motor

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written 9.5 years ago by

rohit • 40

modified 3.9 years ago by

prakhar1144 ★ 5.0k

electrical machines

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written 3.9 years ago by

DevarenjiniP • 3.2k

We know that armature current $$I_a = \frac { V - E_b} {R_a}$$

At start, speed of the motor, N = 0.

$ E_b = \frac {Φ P N} {60} × \frac{Z}{A}$, so if N = 0,$ E_b = 0 $

Then, $I_a = \frac {V-0}{R_a} = …

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