Draw the equivalent circuit, torque - speed, torque - current characteristics of shunt dc motor, Write the equation of the rated speed
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Step 1: Equivalent circuit of a shunt DC motor The equivalent circuit of a shunt DC motor consists of a voltage source (V), armature resistance (Ra), armature reactance (Xa), field resistance (Rf), and the back EMF (Eb) generated by the motor. Show more…
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Determine the torque vs. speed and torque vs. current characteristics for a separately excited DC motor with the following parameters: 2.3 hp, 220V, 6000 rpm, R = 1.39, L = 0.00182 H, K = 0.331 volt/rad/sec. The machine has rated field excitation, and its armature is fed a constant voltage of 220V DC.
Madhur L.
Determine the torque vs. speed and torque vs. current characteristics for a separately excited DC motor with the following parameters: 2.3 hp, 220 V, 6000 rpm, Ra = 1.39 ̦, La = 0.00182 H, Kb = 0.331 volt/rad/sec. The machine has rated field excitation, and its armature is fed a constant voltage of 220 V DC.
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1. The torque-speed characteristics of a DC motor have been determined, as shown in Figure 1 below. Note that u is the voltage applied to the motor armature, τm and ωm are, respectively, the output torque and angular velocity of the motor shaft. From this plot, • Obtain the motor constant, torque constant, and armature resistance of the motor. • When the motor is rotating at 100 radians per second, what is the back emf voltage induced at the armature? • When the motor is producing 2x10^-3 Nm of torque, how much power is dissipated as heat at the motor windings? Figure 1: Torque-speed characteristics of a DC motor
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