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Electric Motors and Drives
book

Electric Motors and Drives

by Austin Hughes
October 2013
Beginner to intermediate content levelBeginner to intermediate
316 pages
13h 14m
English
Newnes
Content preview from Electric Motors and Drives
286 Electric Motors and Drives
low at low speeds. In the medium and low power ranges the
inverter-fed induction motor (using a standard motor) is
satisfactory, and may be cheaper than the d.c. drive. For
restricted speed ranges (say from base speed down to 75 per
cent) and particularly with fan-type loads where precision
speed control is unnecessary, the simple voltage-controlled
induction motor is likely to be the cheapest solution.
LOAD REQUIREMENTS - TORQUE-SPEED
CHARACTERISTICS
The most important things we need to know about the load
are the steady-state torque-speed characteristics, and the effec-
tive inertia as seen by the motor. In additio ...
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Publisher Resources

ISBN: 9781483105277