The manufacturer 's data sheet for a permanent magnet dc motor indicates that it has a torque constant Km 0 21 V (rad sec) and an armature resistance of 1 9 For a constant applied armature voltage of 85 V dc, calculate a The no load speed of the motor in r min and b Its stall (zero speed) current a...

part a At no load Eanl Kmwmnl V Thus Va Km Wmnl 405 radsec Hence the fulll ...

The manufacturer's data sheet for a permanent-magnet dc motor indicates that it has a torque constant Km

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The manufacturer's data sheet for a permanent-magnet dc motor indicates that it has a torque constant Km = 0.21 V/(rad/sec) and an armature resistance of 1.9Ω. For a constant applied armature voltage of 85 V dc, calculate

a. The no-load speed of the motor in r/min and

b. Its stall (zero-speed) current and torque (in N • m).

c. Plot the motor torque as a function of speed.

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Electric Machinery

ISBN: 978-0071230100

6th Edition

Authors: Charles Kingsley, Jr, Stephen D. Umans

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Question Posted: Feb 14, 2011 04:17 AM

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The manufacturer's data sheet for a permanent-magnet dc motor indicates that it has a torque constant Km

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