Transient Braking and Starting Torques in 2-Phase Induction Motors

It is shown that transient braking torque characteristics for a case of a step of dc current applied to the main field can be obtained from equivalent circuit parameters. Based on the calculating method, effects of the rotor resistance r
2
on the torque time lag t
d
and the peak braking torque, the relation between rotor speed, and t
d
are discussed.