Second quadrant or class b chopper, Electrical Engineering

Assignment Help:

Second Quadrant or Class B Chopper

Class B  chopper  is shown in figure in this  type of  chopper load  must contain  a dc source E ( may  be battery or a DC motor)  and inductances the  operation of classes B chopper as follows.

 Mode I

When SW  is on V0 = 0 but current will  be flowing  through  inductance L and  chopper SW  due to E as shown in figure in this mode inductance L stores energy.

Figure  shown the polarity of inductance  and direction of load  current.  It is clear  from this  figure that this  polarity's same as in directed but the  current is  flowing in reverse direction. Hence  is negative.

 Mode II

When SW  is off V0=  { E+ L  di0/dt}  exceeds the Vs  therefore  diode  D becomes forward  biased and current  flow   load to source  through diode D.  Again the load  voltage  is positive but current is in negative direction. In  this mode  inductance releases energy and the  polarity is shown in figure.

Hence  the Vo -I0  characteristics  is shown  in figure  that lie in second  quadrant.


Related Discussions:- Second quadrant or class b chopper

DC machine, importance of dummy coils and equalizer connections

importance of dummy coils and equalizer connections

Evaluate the quiescent point of the circuit, Question: a). For the circ...

Question: a). For the circuit shown in figure state which operation is performed and draw the output waveform if measured between points A and B. The input signal is given in f

Adaptive control process in motor-speed control system, Q. Adaptive control...

Q. Adaptive control process in motor-speed control system? Figure illustrates the adaptive control process as applied to a motor-speed control system, which is based on adjus

Crt and cro, working principle of crtand block diagram of cro

working principle of crtand block diagram of cro

R-C phase shift oscillator , Sketch the circuit diagram of a 4- ladder netw...

Sketch the circuit diagram of a 4- ladder network R-C phase shift oscillator and explain its principle of operation. Also determine the gain of the basic amplifier necessary for th

Analog averaging system, Consider the analog averager where x(t) is the inp...

Consider the analog averager where x(t) is the input and y(t) is the output. (a)   Find the impulse response h(t) of the average.  Is this system causal? (b)   Let x(t)

Field current and the armature terminal voltage, Consider the operation of ...

Consider the operation of a dc shuntmotor that is affected by the following changes in its operating conditions. Explain the corresponding approximate changes in the armature curre

For zero flag , For zero flag  CZ ( Call  on Zero )  CNZ ( Call on no...

For zero flag  CZ ( Call  on Zero )  CNZ ( Call on no zero ) Instructions CZ call the  subroutine  from the  specified  memory location if zero flag is set  (Z=1). The i

Alternator, How can I design alternator?

How can I design alternator?

Circuit theory, Use basic circuit theory to convert the "T" circuit be...

Use basic circuit theory to convert the "T" circuit below into the equivalent "π". Hint: Remember to disconnect the voltage source and the load.

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