Electrical Engineering (EE) Exam > Electrical Engineering (EE) Notes > Short Notes for Electrical Engineering > Short Notes: Chopper
Short Notes: Chopper | Short Notes for Electrical Engineering - Electrical Engineering (EE) PDF Download
| Download, print and study this document offline |
Please wait while the PDF view is loading
Page 1
Buck Converter
When CH is ON ? ? o t DT ??
Voltage across inductor ? ?
L S O
V V V ??
When CH is OFF (DT < t < T)
Voltage across inductor
LO
VV ?
Applying volt-sec balance across inductor
? ? ? ? ? ?
S O O
V V DT V T DT 0 ? ? ? ? ? ?
? ? ? ?
S O O
V V D V 1 D 0 ? ? ? ?
OS
V DV ?
D = duty cycle =
ON
T
T
Where T = switching period =
1
f
f = switching frequency
Page 2
Buck Converter
When CH is ON ? ? o t DT ??
Voltage across inductor ? ?
L S O
V V V ??
When CH is OFF (DT < t < T)
Voltage across inductor
LO
VV ?
Applying volt-sec balance across inductor
? ? ? ? ? ?
S O O
V V DT V T DT 0 ? ? ? ? ? ?
? ? ? ?
S O O
V V D V 1 D 0 ? ? ? ?
OS
V DV ?
D = duty cycle =
ON
T
T
Where T = switching period =
1
f
f = switching frequency
? Average output voltage =
S
DV
? rms output voltage =
S
DV
? Average source current =
O
DI
? Average current of FD = ? ?
O
1 D I ?
Ripple in output current
When CH is ON ? ? 0 t DT ??
? ?
L S O S
V V V 1 D V ? ? ? ?
During this period, since voltage is positive current increase from minimum value to maximum
value.
max min
i I I ? ? ?
t DT 0 DT ? ? ? ?
? ?
? ?
?
? ? ?
S
i
L 1 D V
DT
? ?
S
D 1 D V
i
fL
?
??
? This formula gives approximate value of output ripple current for maximum ripple, D = 0.5
? ?
S
max
V
i
4fL
??
?
L
max O
I
II
2
?
??
?
L
min O
I
II
2
?
??
Critical Inductance (L C)
Value of inductance at which inductor voltage waveform is just discontinuous.
? ?
?
?
c
1 D R
L
2f
Page 3
Buck Converter
When CH is ON ? ? o t DT ??
Voltage across inductor ? ?
L S O
V V V ??
When CH is OFF (DT < t < T)
Voltage across inductor
LO
VV ?
Applying volt-sec balance across inductor
? ? ? ? ? ?
S O O
V V DT V T DT 0 ? ? ? ? ? ?
? ? ? ?
S O O
V V D V 1 D 0 ? ? ? ?
OS
V DV ?
D = duty cycle =
ON
T
T
Where T = switching period =
1
f
f = switching frequency
? Average output voltage =
S
DV
? rms output voltage =
S
DV
? Average source current =
O
DI
? Average current of FD = ? ?
O
1 D I ?
Ripple in output current
When CH is ON ? ? 0 t DT ??
? ?
L S O S
V V V 1 D V ? ? ? ?
During this period, since voltage is positive current increase from minimum value to maximum
value.
max min
i I I ? ? ?
t DT 0 DT ? ? ? ?
? ?
? ?
?
? ? ?
S
i
L 1 D V
DT
? ?
S
D 1 D V
i
fL
?
??
? This formula gives approximate value of output ripple current for maximum ripple, D = 0.5
? ?
S
max
V
i
4fL
??
?
L
max O
I
II
2
?
??
?
L
min O
I
II
2
?
??
Critical Inductance (L C)
Value of inductance at which inductor voltage waveform is just discontinuous.
? ?
?
?
c
1 D R
L
2f
Critical Capacitance (C C)
Value of capacitance at which capacitor voltage waveform is just discontinuous.
C
1
C
8fR
?
Step-up chopper (Boost converter)
? ?
? ? ?
LS
when CHis ON 0 t DT , V V
? ? ? ?
? ? ? ?
L S O
when CHis OFF DT t T , V V V
Applying volt-sec balance across inductor
? ? ? ? ? ?
S S O
V DT V V 1 D T 0 ? ? ? ?
? ?
S
O
V
V
1D
?
?
? Since D < 1,
OS
VV ?
?
? ?
? ? ? ?
CO
when CHis ON 0 t DT , I I
? ?
? ? ? ? ?
C L O
when CHis OFF DT t T , I I I
? ? ? ? ? ?
?
? ? ? ? ?
O L O
Applying Ampere sec balance across capacitor
I DT I I 1 D T 0
? ?
?
?
O
L
I
I
1D
Ripple in inductor current
? ?
??
min max
When CHis ON 0 t DT , current increase from I to I
? ? ?
? ? ? ? ?
S
S L
SL
V DT
DV i
L V i
DT L fL
Page 4
Buck Converter
When CH is ON ? ? o t DT ??
Voltage across inductor ? ?
L S O
V V V ??
When CH is OFF (DT < t < T)
Voltage across inductor
LO
VV ?
Applying volt-sec balance across inductor
? ? ? ? ? ?
S O O
V V DT V T DT 0 ? ? ? ? ? ?
? ? ? ?
S O O
V V D V 1 D 0 ? ? ? ?
OS
V DV ?
D = duty cycle =
ON
T
T
Where T = switching period =
1
f
f = switching frequency
? Average output voltage =
S
DV
? rms output voltage =
S
DV
? Average source current =
O
DI
? Average current of FD = ? ?
O
1 D I ?
Ripple in output current
When CH is ON ? ? 0 t DT ??
? ?
L S O S
V V V 1 D V ? ? ? ?
During this period, since voltage is positive current increase from minimum value to maximum
value.
max min
i I I ? ? ?
t DT 0 DT ? ? ? ?
? ?
? ?
?
? ? ?
S
i
L 1 D V
DT
? ?
S
D 1 D V
i
fL
?
??
? This formula gives approximate value of output ripple current for maximum ripple, D = 0.5
? ?
S
max
V
i
4fL
??
?
L
max O
I
II
2
?
??
?
L
min O
I
II
2
?
??
Critical Inductance (L C)
Value of inductance at which inductor voltage waveform is just discontinuous.
? ?
?
?
c
1 D R
L
2f
Critical Capacitance (C C)
Value of capacitance at which capacitor voltage waveform is just discontinuous.
C
1
C
8fR
?
Step-up chopper (Boost converter)
? ?
? ? ?
LS
when CHis ON 0 t DT , V V
? ? ? ?
? ? ? ?
L S O
when CHis OFF DT t T , V V V
Applying volt-sec balance across inductor
? ? ? ? ? ?
S S O
V DT V V 1 D T 0 ? ? ? ?
? ?
S
O
V
V
1D
?
?
? Since D < 1,
OS
VV ?
?
? ?
? ? ? ?
CO
when CHis ON 0 t DT , I I
? ?
? ? ? ? ?
C L O
when CHis OFF DT t T , I I I
? ? ? ? ? ?
?
? ? ? ? ?
O L O
Applying Ampere sec balance across capacitor
I DT I I 1 D T 0
? ?
?
?
O
L
I
I
1D
Ripple in inductor current
? ?
??
min max
When CHis ON 0 t DT , current increase from I to I
? ? ?
? ? ? ? ?
S
S L
SL
V DT
DV i
L V i
DT L fL
Ripple in output voltage
??
CO
when CHis ON , I I
C
O
V
C. I
DT
?
??
? ?
O
OC
I DT
VV
C
?
? ? ? ?
-ve sign indicates voltage decrease
? ?
O
O
I DT
V
C
? ? ?
Critical Inductance (Lc)
L
L
I
I
2
?
?
? ?
?
?
C
D 1 D R
L
2f
Critical Capacitance (C c)
O
O
V
V
2
?
?
?
C
D
C
2fR
If inductor also has an internal resistance, then
? ?
? ?
OS
2
1D
VV
r
1D
R
??
?
??
?
?? ??
??
r = internal resistance of inductor
R = load resistance
Page 5
Buck Converter
When CH is ON ? ? o t DT ??
Voltage across inductor ? ?
L S O
V V V ??
When CH is OFF (DT < t < T)
Voltage across inductor
LO
VV ?
Applying volt-sec balance across inductor
? ? ? ? ? ?
S O O
V V DT V T DT 0 ? ? ? ? ? ?
? ? ? ?
S O O
V V D V 1 D 0 ? ? ? ?
OS
V DV ?
D = duty cycle =
ON
T
T
Where T = switching period =
1
f
f = switching frequency
? Average output voltage =
S
DV
? rms output voltage =
S
DV
? Average source current =
O
DI
? Average current of FD = ? ?
O
1 D I ?
Ripple in output current
When CH is ON ? ? 0 t DT ??
? ?
L S O S
V V V 1 D V ? ? ? ?
During this period, since voltage is positive current increase from minimum value to maximum
value.
max min
i I I ? ? ?
t DT 0 DT ? ? ? ?
? ?
? ?
?
? ? ?
S
i
L 1 D V
DT
? ?
S
D 1 D V
i
fL
?
??
? This formula gives approximate value of output ripple current for maximum ripple, D = 0.5
? ?
S
max
V
i
4fL
??
?
L
max O
I
II
2
?
??
?
L
min O
I
II
2
?
??
Critical Inductance (L C)
Value of inductance at which inductor voltage waveform is just discontinuous.
? ?
?
?
c
1 D R
L
2f
Critical Capacitance (C C)
Value of capacitance at which capacitor voltage waveform is just discontinuous.
C
1
C
8fR
?
Step-up chopper (Boost converter)
? ?
? ? ?
LS
when CHis ON 0 t DT , V V
? ? ? ?
? ? ? ?
L S O
when CHis OFF DT t T , V V V
Applying volt-sec balance across inductor
? ? ? ? ? ?
S S O
V DT V V 1 D T 0 ? ? ? ?
? ?
S
O
V
V
1D
?
?
? Since D < 1,
OS
VV ?
?
? ?
? ? ? ?
CO
when CHis ON 0 t DT , I I
? ?
? ? ? ? ?
C L O
when CHis OFF DT t T , I I I
? ? ? ? ? ?
?
? ? ? ? ?
O L O
Applying Ampere sec balance across capacitor
I DT I I 1 D T 0
? ?
?
?
O
L
I
I
1D
Ripple in inductor current
? ?
??
min max
When CHis ON 0 t DT , current increase from I to I
? ? ?
? ? ? ? ?
S
S L
SL
V DT
DV i
L V i
DT L fL
Ripple in output voltage
??
CO
when CHis ON , I I
C
O
V
C. I
DT
?
??
? ?
O
OC
I DT
VV
C
?
? ? ? ?
-ve sign indicates voltage decrease
? ?
O
O
I DT
V
C
? ? ?
Critical Inductance (Lc)
L
L
I
I
2
?
?
? ?
?
?
C
D 1 D R
L
2f
Critical Capacitance (C c)
O
O
V
V
2
?
?
?
C
D
C
2fR
If inductor also has an internal resistance, then
? ?
? ?
OS
2
1D
VV
r
1D
R
??
?
??
?
?? ??
??
r = internal resistance of inductor
R = load resistance
Buck-Boost Converter
When CH is ON (O < t < DT)
LS
VV ?
CO
II ??
When CH is OFF (DT < t < T)
LO
VV ?
? ?
C L O
I I I ? ? ?
Applying volt-sec balance across inductor
? ? ? ?
? ? ?
SO
V DT V 1 D T 0
? ?
S
O
DV
V
1D
?
?
?
Applying Ampere-sec balance across inductor
? ? ? ? ? ?
O L O
I DT I I 1 D T 0 ? ? ? ? ?
? ?
O
L
I
I
1D
?
?
?
? ?
? ?
?
??
?
?
2
OS
L
V DV
I
R 1 D
R 1 D
Ripple in inductor current
When CH is ON (O < t < DT)
Inductor current increase from
min max
I to I
?
??
L
S
I
LV
DT
S
L
DV
I
fL
??
Read More
Related Exams
About this Document
|
4.81/5 Rating |
|
Dec 18, 2024 Last updated |
Document Description: Short Notes: Chopper for Electrical Engineering (EE) 2024 is part of Short Notes for Electrical Engineering preparation.
The notes and questions for Short Notes: Chopper have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Short Notes: Chopper covers topics
like and Short Notes: Chopper Example, for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Short Notes: Chopper.
Introduction of Short Notes: Chopper in English is available as part of our Short Notes for Electrical Engineering
for Electrical Engineering (EE) & Short Notes: Chopper in Hindi for Short Notes for Electrical Engineering course.
Download more important topics related with notes, lectures and mock test series for Electrical Engineering (EE)
Exam by signing up for free. Electrical Engineering (EE): Short Notes: Chopper | Short Notes for Electrical Engineering - Electrical Engineering (EE)
Description
Full syllabus notes, lecture & questions for Short Notes: Chopper | Short Notes for Electrical Engineering - Electrical Engineering (EE) - Electrical Engineering (EE) | Plus excerises question with solution to help you revise complete syllabus for Short Notes for Electrical Engineering | Best notes, free PDF download
Information about Short Notes: Chopper
In this doc you can find the meaning of Short Notes: Chopper defined & explained in the simplest way possible. Besides explaining types of
Short Notes: Chopper theory, EduRev gives you an ample number of questions to practice Short Notes: Chopper tests, examples and also practice Electrical Engineering (EE)
tests
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Viva Questions
,Objective type Questions
,past year papers
,Short Notes: Chopper | Short Notes for Electrical Engineering - Electrical Engineering (EE)
,study material
,video lectures
,Extra Questions
,Free
,Exam
,Short Notes: Chopper | Short Notes for Electrical Engineering - Electrical Engineering (EE)
,shortcuts and tricks
,MCQs
,ppt
,Sample Paper
,Semester Notes
,Important questions
,Previous Year Questions with Solutions
,practice quizzes
,Short Notes: Chopper | Short Notes for Electrical Engineering - Electrical Engineering (EE)
,mock tests for examination
,Summary
;
Additional Information about Short Notes: Chopper for Electrical Engineering (EE) Preparation
Short Notes: Chopper Free PDF Download
The Short Notes: Chopper is an invaluable resource that delves deep into the core of the Electrical Engineering (EE) exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the Short Notes: Chopper now and kickstart your journey towards success in the Electrical Engineering (EE) exam.
Importance of Short Notes: Chopper
The importance of Short Notes: Chopper cannot be overstated, especially for Electrical Engineering (EE) aspirants.
This document holds the key to success in the Electrical Engineering (EE) exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
Short Notes: Chopper
Short Notes: Chopper Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to Short Notes: Chopper.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, Short Notes: Chopper Notes on EduRev are your ultimate resource for success.
Short Notes: Chopper Electrical Engineering (EE) Questions
The "Short Notes: Chopper Electrical Engineering (EE) Questions" guide is a valuable resource for all aspiring students preparing for the
Electrical Engineering (EE) exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study Short Notes: Chopper on the App
Students of Electrical Engineering (EE) can study Short Notes: Chopper alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Short Notes: Chopper,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Short Notes: Chopper is prepared as per the latest Electrical Engineering (EE) syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup