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

What is effect of overheating on an electric insulator, What is the effect ...

What is the effect of overheating on the life of an electric insulator? An insulator is designed to withstand amount of heat. However, when an insulator is overheated so dielec

Find the transmitters unmodulated carrier power, At the transmitter in a st...

At the transmitter in a standard AM system, P f = 50 W. In the receiver (S 0 /N 0 ) AM = 250 when (S i /N i ) AM = 3000. Find the transmitter's unmodulated carrier power and t

Describe properties of the conducting materials, Describe properties of ...

Describe properties of the conducting materials . Conducting materials are classified by low resistivity materials and high resistivity materials. Low resistivity mater

The resistance of an electrical conductor, The resistance of an electrical ...

The resistance of an electrical conductor depends on 4 factors, these being:   a)  The length of the conductor   b)  The cross-sectional area of the conductor

Power system, what is speed governing frenqency control

what is speed governing frenqency control

Design and build a circuit board, Devise a "green" design to improve the el...

Devise a "green" design to improve the electrical plan of a room in your home. How might you reduce electricity use in your home. Initiate and plan 1. Select two rooms in y

Advantages and disadvantages of alloying steel with silicon, State the adva...

State the advantages and disadvantages of alloying steel with silicon for use as magnetic materials in transformer and electric machines. Extensive utilize, is made of iron-sil

Explain the construction of a mosfet, Explain the construction of a MOSFET....

Explain the construction of a MOSFET. Draw the symbols and diagrams of both P-channel and N-channel MOSFET. As JFET and MOSFET also have source, drain and gate. Its gate is ins

What do you mean by communication channel, Q. What do you mean by communica...

Q. What do you mean by communication channel? The communication channel (transmissionmedium) is the physicalmediumthat is utilized to send the signal from the transmitter to 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