Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Textbook Question
Chapter 40, Problem 1SQ
What are the two basic functions of synchronous motor control?
Expert Solution & Answer
To determine
Explain the two primary functions of the synchronous motor control.
Explanation of Solution
Two basic functions of the synchronous motor control in starting are as follows:
- (1) To start the motor as an induction motor by use of induction motor starting schemes. In this, the motor connects across the supplying line or to the starter output terminals. The starters that are used to start the motor as an induction motor are based on the size of the motor.
- (2) Synchronization process of the motor by the DC field (rotor) excitation to bring the motor to the synchronous speed is the second basic function. In starting of the synchronous motor two voltages are required, AC and DC for the stator and the rotor respectively.
Conclusion:
Thus, the two primary functions of synchronous motor control are explained.
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If C is the circle |z|=4 evaluate ff(z)dz for each of the following
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5. Answer the following questions. Take help from ChatGPT to answer these questions (if
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and check whether ChatGPT is giving you the appropriate answers in the context of our
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a) What is the Bode plot? What kind of input do we consider for the frequency-response-
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b) What is the advantage of design using the frequency-response method?
c) Define gain margin, phase margin, gain crossover frequency, and phase crossover
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Phase (deg)
3. The Bode diagram of a system is shown below.
Magnitude (dB)
System: sys
-10
Frequency (rad/s): 0.141
Magnitude (dB): -15.6
-20
-30
40
-50
-60
0
-45
-90
-135
101
10°
Bode Diagram
System: sys
Frequency (radis): 10
Magnitude (dB): -18.9
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Phase (deg):-52.2
101
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102
103
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Chapter 40 Solutions
Electric Motor Control
Ch. 40 - What are the two basic functions of synchronous...Ch. 40 - Prob. 2SQCh. 40 - If all of the control circuits are ACand DC is not...Ch. 40 - When the rotor and stator fields lock into step,...Ch. 40 - Prob. 5SQCh. 40 - Prob. 6SQCh. 40 - In Figure 402, approximately what is the...Ch. 40 - Why are the AC ammeter and DC meter necessary in...Ch. 40 - Prob. 9SQ
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