Evaluate the transfer function, Electrical Engineering

Assignment Help:

Since dc motors of various types are used extensively in control systems, it is essential for analytical purposes that we establish a mathematical model for the dc motor. Let us consider the case of a separately excited dc motor with constant field excitation. The schematic representation of the model of a dc motor is shown in Figure. We will investigate how the speed of the motor responds to changes in the voltage applied to the armature terminals. The linear analysis involves electrical transients in the armature circuit and the dynamics of the mechanical load driven by the motor. At a constant motor field current If, the electromagnetic torque and the generated emf are given by

Te = Kmia

ea = Kmωm

where Km = kIf is a constant, which is also the ratio eam. In terms of the magnetization curve, ea is the generated emf corresponding to the field current If at the speed ωm. Let us now try to find the transfer function that relates m(s) to Vt(s).

1543_Evaluate the transfer function.png


Related Discussions:- Evaluate the transfer function

Single phase full wave mid point type rectifier , Single Phase Full Wave M...

Single Phase Full Wave Mid Point Type  Rectifier A single  phase full wave  mid point  type controlled  rectifier consists  two  thyristors  one centre tapped  transformer  an

DC motor & encoder, If a high resolution emcoder is used for position contr...

If a high resolution emcoder is used for position control, will the number of pole count in the DC motor be matter? What is the requirement for the DC motor in order to work with h

Balance Business Score Card in KPI, Balance Business Score Card in KPI ...

Balance Business Score Card in KPI Information Age The current era is driven by the information. It is a revolutionary transformation and industries are competing in th

Types of cells and batteries, Types of cells and batteries are:- a.  C...

Types of cells and batteries are:- a.  Carbon-zinc cell b. Nickel-cadmium cell c.  Alkaline celld.  d.  Edison cell e.  Mercury cell

Thunderstrom detector, Ask question #how to construct thunderstrom detector...

Ask question #how to construct thunderstrom detector with circuit breaker.

Determine the flux, Q. Consider themagnetic circuit of Figure. Let the cros...

Q. Consider themagnetic circuit of Figure. Let the cross-sectional area AC of the core, be 16 cm 2 , the average length of the magnetic path in the core lC be 40 cm, the number

permanent magnet stepper motor - stepper motor , Normal 0 fa...

Normal 0 false false false EN-IN X-NONE X-NONE   Permanent   Magnet Stepper Motor The s

Determine the percent voltage regulation of the transformer, The transforme...

The transformer of Example is supplying full load (i.e., rated load of 50 kVA) at a rated secondary voltage of 240 V and 0.8 power factor lagging. Neglecting the exciting current o

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