2 compute the total electromagnetic torque t and the rotor speed when
2) Compute the total electromagnetic torque T, and the rotor speed when the duty
cycle is equal to 0.8 in the following three cases.
a) The separately excited connection in Fig. 2. Consider.
Voc=200V, R₂ = 10, La = 80mH, Lm = 2H,J = 0.005 kgm²,
B₁ = 0.0015 Nm/rad, i, = 1A.
Fig. 2. H-bridge drive system for separately excited DC motor
b) The shunt excited connection in Fig. 2. Consider:
Vpc = 200V, R₂ = 10, La = 80mH, Lm = 2H,J = 0.005 kgm², R, = 2000,
L = 20H, B₁ = 0.0015 Nm/rad.
Fig. 2. H-bridge drive system for a shunt DC motor
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