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(a) A buck chopper shown in Fig.A4 is fed by a 600 V D.C., and the motor has the following circuit parameters. • Armatur
Posted: Mon May 09, 2022 7:51 am
by answerhappygod
- A A Buck Chopper Shown In Fig A4 Is Fed By A 600 V D C And The Motor Has The Following Circuit Parameters Armatur 1 (41.66 KiB) Viewed 30 times
(a) A buck chopper shown in Fig.A4 is fed by a 600 V D.C., and the motor has the following circuit parameters. • Armature current la = 100 A • Armature resistance Re = 0.052 • Duty cycle = 0.6 back e.m.f constant kaº of the motor = 0.398 V /rpm R R M 1 Vs E. + + 000 Fig. A4 (i) Evaluate the output voltage of the chopper. (ii) Evaluate the motor speed in rev/min. (1 mark) (3 marks) (b) Briefly describe the operating condition of armature voltage control on each of the following issues in DC drives. (1) Level of field current, (1 mark) (ii) Range of motor speed, (1 mark) (iii) Motor torque, and (1 mark) (iv) Motor power. (1 mark)