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

Find the total input power, Q. A 230-Vdc shuntmotor delivers 30 hp at the s...

Q. A 230-Vdc shuntmotor delivers 30 hp at the shaft at 1120 r/min. If the motor has an efficiency of 87% at this load, find: (a) The total input power. (b) The line current.

Architecture of 8085 microprocessor, Architecture of 8085 Microprocessor ...

Architecture of 8085 Microprocessor The 8085  microprocessor  is an 8 bit  general purpose microprocessor. 8 bit  processor  means it can  read write  and process 8 bit  data

Rrc rotate accumulator right instruction , RRC Rotate  Accumulator  Right...

RRC Rotate  Accumulator  Right Instruction This instruction also  rotates the contents of the  accumulator  toward right  by one bit. The  D 7   bit moves  to D 5   position a

Explain basic working of ideal operational amplifier, Q. Explain basic work...

Q. Explain basic working of Ideal operational amplifier? The operational amplifier, known also as op amp, consists of several transistors, diodes, capacitors, and resistors. It

Give classification of plastics, Give classification of plastics and al...

Give classification of plastics and also the differences between them. Plastics are materials (containing carbon as common element) that have organic substances of high mol

Branch operations , Branch Operations Normally  the program  executes ...

Branch Operations Normally  the program  executes in  a sequence. The contents of the program counter register are incremented by  one during  the execution  of current  instr

Deviations from purchasing power parity, Q. Does the existence of non-trada...

Q. Does the existence of non-tradable goods allow for deviations from Purchasing Power Parity? Answer: Yes the continuation of non-tradable goods permits deviations from Purch

Determine power gain, Q. An antenna has an aperture area of 10 m 2 ,an ape...

Q. An antenna has an aperture area of 10 m 2 ,an aperture ef?ciency of 0.6, and negligible losses. If it is used at 5 GHz, determine: (a) Its power gain. (b) The maximum pow

Obtain the laplace transform of the waveform, Q. Use MATLAB to obtain the L...

Q. Use MATLAB to obtain the Laplace transform of the waveform f(t) = [200t e -25t + 10 e -50t sin(25t)]u(t) which consists of a damped ramp and a damped sine. Also show the

CONTORL SYSTEMS, WHAT ABOUT THE STABILITY IF WE USE COMPENSATOR

WHAT ABOUT THE STABILITY IF WE USE COMPENSATOR

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