A trapezoidal BLDC motor has an armature resistance of 0.6 Ω phase and the voltage drop across conducting transistor is 0.6 V. Motor is operated in the bipolar mode. This motor runs at 2000 rev/m on no load drawing negligible current from 200 V DC input. at what speed the motor run when loaded to 5 Nm torque.to what value should the input voltage be reduced to lower the speed to 500 rev/m for the same torque.

A trapezoidal BLDC motor has an armature resistance of 0.6 Ω phase and the voltage drop across conducting transistor is 0.6 V. Motor is operated in the bipolar mode. This motor runs at 2000 rev/m on no load drawing negligible current from 200 V DC input. at what speed the motor run when loaded to 5 Nm torque.to what value should the input voltage be reduced to lower the speed to 500 rev/m for the same torque.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

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