A reluctance machine consists of a passive rotor and a stato

A reluctance machine consists of a passive rotor and a stator with a single winding of N = 100. Suppose that the total reluctance of the machine is given by R(theta) = 30-20cos4 theta (A/wb) with a rotating angle theta. Determine the stator winding current i such that the rotor can be balanced with a load torque = 20 squareroot 3 in N-m at an equilibrium position theta = 30 degree; Find the energy W_m stored in the system at the equilibrium position in (a); If the current of the stator is i = 12cos 200, find the machine rotating speed w_m.

Solution

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