Читать книгу Analysis and Control of Electric Drives - Ned Mohan - Страница 64

1 2‐1 A constant torque of 5 Nm is applied to an unloaded motor at rest at time t = 0. The motor reaches a speed of 1800 rpm in 3 s. Assuming the damping to be negligible, calculate the motor inertia.

2 2‐2 Calculate the inertia if the cylinder in Example 2-2 is hollow, with the inner radius r2 = 4 cm.

3 2‐3 A vehicle of mass 1500 kg is traveling at a speed of 50 km/h. What is the kinetic energy stored in its mass? Calculate the energy that can be recovered by slowing the vehicle to a speed of 10 km/h.