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

Build an intersection traffic light using the led, Build an intersection tr...

Build an intersection traffic light using the LED's as in the diagram below Day Use the LED's on the trainer (port 11) Main Street and Side Street alternate. Mai

Write a control word for counter, Q. Write a control word for counter 1 of...

Q. Write a control word for counter 1 of 8253 / 8254 that selects following options:  load least significant byte only, mode 5 of operation and binary counting. Then write an inst

BE, WHICH PROJECT WILL BE BEST THESE DAY

WHICH PROJECT WILL BE BEST THESE DAYS

Regions of operation in bjt, Q. Regions of operation in BJT ? Transisto...

Q. Regions of operation in BJT ? Transistor find many applications like amplifier, switch etc. depending upon the polarity and the magnitude of the applied voltages across the

What do you mean by nibble, Q. What do you mean by Nibble? The nibble i...

Q. What do you mean by Nibble? The nibble is a collection of bits on a 4-bit boundary. It would not be a particularly interesting data structure except for two items BCD (binar

Explain the nor gates - microprocessor, Explain the NOR GATES - Microproces...

Explain the NOR GATES - Microprocessor The NOR GATE is an OR gate with the output inverted. Consequently the outputs of a NOR gate would have the opposite states as the outputs o

Control Charts, Control Charts The control chart is the fundamental to...

Control Charts The control chart is the fundamental tool of Statistical Quality Control (SQC). It denotes the general cause variation in which is built into a system therefore

Static rotor resistance control methods - motor control , Static Rotor Res...

Static Rotor Resistance Control Methods This method is used only for slip  ring induction motor in SRIM  3- phase  variable  resistor can be inserted in the rotor  circuit and

Compute the current supplied by the source, Q. A balanced three-phase, wye-...

Q. A balanced three-phase, wye-connected, 2400- V, 60-Hz source supplies two balanced wye- connected loads in parallel. The first draws 15 kVA at 0.8 power factor lagging, and the

Dtl and ttl logic circuits, Q. DTL AND TTL LOGIC CIRCUITs? Bipolar tran...

Q. DTL AND TTL LOGIC CIRCUITs? Bipolar transistorswere the first solid-state switching devices commonly used to implement digital logic circuits in the 1950s and 1960s. These c

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