Dc machine closed-loop dynamics, Electrical Engineering

Assignment Help:

i) Calculate the eigenvalues of a 100 hp, 1150 rpm dc machine at rated flux with no extra load inertia. Use the "hot" value of the armature resistance. Calculate estimates of the resulting speed overshoot and settling time (within 2%) for a step armature voltage input, beginning at an initial current of 0.

ii) Now assume that a closed-loop current regulator is introduced as shown in Fig. 2.7-3 of the book. What are the new eigenvalues of the motor-plus-regulator system if the current regulator gain Ki is set to 10? Ignore the mechanical damping constant (B=0) in Fig. 2.7-3. Calculate estimates of the resulting overshoot and settling time for a step current input, beginning at an initial current of 0.

iii) Now consider a closed-loop speed control system as shown in Fig. 2.7-5. Assume that the current regulator dynamics are very fast compared to the outer speed loop and the current regulator gain is high enough so that it is effectively "ideal". Calculate the eigenvalue of this closed-loop system for Kp=100, τz=∞. (Assume B=D=0 again.) Calculate the resulting output speed overshoot and approximate settling time of the closed-loop system for a step speed command input.


Related Discussions:- Dc machine closed-loop dynamics

Assignment question , An audio amplifier with feedback needs gain of approx...

An audio amplifier with feedback needs gain of approximately 500 in a 3-dB bandwidth extending from 60 Hz to 25 kHz. Assume this is accomplished using a feedback network with ß=0.0

Show operation on jfet, Q. Show Operation on JFET? The junction in the ...

Q. Show Operation on JFET? The junction in the JFETis reverse-biased for normal operation.No gate current flows because of the reverse bias and all carriers flow from source to

Junctions and diodes, An intrinsic semiconductor at room temperature has fr...

An intrinsic semiconductor at room temperature has free electrons

Briefly explain about transients in circuits, Q. Briefly explain about Tran...

Q. Briefly explain about Transients in circuits? The total response of a system to an excitation that is suddenly applied or changed consists of the sum of the steady-state and

power system operation, AskWrite short notes on pit head generation. ques...

AskWrite short notes on pit head generation. question #Minimum 100 words accepted#

Explain n - type semiconductor, Explain n - Type semiconductor. n - ...

Explain n - Type semiconductor. n - Type semiconductor:- (i) If small amount of pentavalent impurity is added with, to a pure semiconductor giving a large number of free

Find the frequency of oscillation - amplifier gain, Q. Find the frequency o...

Q. Find the frequency of oscillation, amplifier gain ? The transfer function is found to be where the equation is written as a Laplace transform (s=jw). Analysis of thi

Packet switching over circuit switching, Q. Justify disadvantages and advan...

Q. Justify disadvantages and advantages of packet switching over circuit switching? Ans: Comparison of circuit switching and packet switching showing disadvantages and advan

Electrical fault which might occur in a circuit, Question 1: (a) Descri...

Question 1: (a) Describe the three main types of electrical fault which might occur in a circuit. (b) What is three phase electric power? Give its advantages. (c) Explain th

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd