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

Describe transistor stability parameters, Q. Describe transistor stability ...

Q. Describe transistor stability parameters The two parameters are · The stability factor ,K · Stability measure,ß1 These parameters determine the transistor stability

CRT, Why are the operating voltages of a CRT arranged so that the deflectio...

Why are the operating voltages of a CRT arranged so that the deflection plates are nearly at ground potential?

Minimized circuit using or and and not gate, Given S(F) = A'B +'C'D + C'D +...

Given S(F) = A'B +'C'D + C'D +'A'B + 'A B + 'A 'C + 'A D + 'A C A. DRAW A MINIMIZED CIRCUIT USING ONLY OR AND NOT GATES (2 input gates) B. WRITE THE WIRE LIST Example of a

Explain rs422a standard, Explain RS422A standard. RS422A: 1.  Date...

Explain RS422A standard. RS422A: 1.  Date Rate: 10 Mbits per second 2.  Driving capability up to 4000ft and 10 receivers 3.  This is Differential standard that is- a

Problem of current electricity, charges of +2q and -4q are fixed a distance...

charges of +2q and -4q are fixed a distance d apart as in figure_2(a).find electric field at the point A ,B and C (b) sketch roughly the electric field lines.

Induced emf in coils, Faraday conducted a series of experiments on coils in...

Faraday conducted a series of experiments on coils in a magnetic field. He found that if the magnetic flux density threading a coil were changed, a voltage was induced in the co

General purpose diodes - types of power diodes , General Purpose Diodes ...

General Purpose Diodes The  general purpose  diodes  have relatively high reverse recovery time. The  diodes are general  made  by diffusion. They  are used  in low  speed  app

Which impurity is added in n-type-semiconductor, In n type semi conductor a...

In n type semi conductor added impurity is (A) Pentavalent.                                (B) Divalent. (C) Tetravalent.                                 (D) Trivalent.

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