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

Oscillator circuit with the help of block diagram, Q. Explain the condition...

Q. Explain the conditions to be satisfied for sustained oscillations in an oscillator circuit with the help of block diagram. The essential condition for sustained oscillations

Connection of shunt capacitors - across individual customers, Connection of...

Connection of Shunt Capacitors - Across Individual Customers The most appropriate manner of improving PF of the distribution system and thereby reducing line losses is to link

Define amplification factor, Q. Define amplification factor? Amplifica...

Q. Define amplification factor? Amplification factor  μ It is the ratio of the drain -source voltage (ΔVDS) to the change in the gate to source voltage (ΔV GS ) at constan

Find the torque supplied to the mechanical load, Q. The machine of Problem ...

Q. The machine of Problem can be used as a motor. Let the terminals of the coil be connected to a voltage source of 1 kV rms. If the motor runs at 1800 r/min and draws a current of

Find the diameter of the antennas, Two stations, located on mountain tops 4...

Two stations, located on mountain tops 40 km apart, communicate with each other using two identical paraboloidal antennas with pencil beam- width of 1°, aperture ef?ciency of 0.8,

#bode plots.., #how to draw bode plots for a transfer function

#how to draw bode plots for a transfer function

Induction heating levitation, Using a levitation coil, you levitate a condu...

Using a levitation coil, you levitate a conductive object in the magnetic field and heat within that field. I have 2 sample report and I would like you to write some thing similar

Automatic irrigation system on running solar power b, how to upload the pro...

how to upload the program on proteus software by using personal computer

Microprocessors, three application of microprocessor

three application of microprocessor

What minimum value of coupling resistance, Q. It is desired to have a sag o...

Q. It is desired to have a sag or tilt of no more than 10% when a 50Hz square wave is impressed on an amplifier stage. The output circuit resistance is Rv=1K. What minimum value of

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