Industrial Motor Control
Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Concept explainers

Mount Motor
A mount motor can be termed as an engine mount. Mount motors are essential parts of machines and establish a connection between an engine and chassis. They prevent the engine and chassis from getting damaged and also help to stabilize the engine.
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Chapter 46, Problem 1RQ
To determine

The synchronous speed of the six pole motor operated with an applied voltage of 20 hertz.

Expert Solution & Answer
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Explanation of Solution

Consider the formula for the synchronous speed is,

    Ns=120fP

Then, the synchronous speed is calculated as,

    Ns=120206=400 rpm

Thus, the synchronous speed is 400 rpm.

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QUESTION 8 Consider the equations of motion of an armature controlled DC motor given by Jw(t)+bw (t) Ki(t) = -Tfriction - Tload (t) di (t) + Ri (t) + Kw (t) = Vin (t), dt where vin(t) is the input voltage and Tload(t) is the input load torque. The outputs are the armature current i(t) and the motor speed w(t). The steady-state response of motors are specified by nominal voltage, stall torque, stall current, no load speed, and no load current. At steady-state operation, the motor equations satisfy bo) -Ki =-T -T. fric load Ri +Kov_- 55 55 The stall torque is the load torque required stead-state speed of the motor is zero. The stall current is the armature current when the motor speed is zero. The no load speed is the speed of motor when the load torque is zero. The no load current is the current when the load torque is zero. What is stall torque for this motor in N-m? Keep 3 significant figures, and do not include units. Use Scientific notation. The constants are given below. Nominal…

Chapter 46 Solutions

Industrial Motor Control

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