TELKOM
NIKA Indonesia
n
Journal of
Electrical En
gineering
Vol. 15, No. 2, August 201
5, pp. 361 ~
367
DOI: 10.115
9
1
/telkomni
ka.
v
15i2.809
6
361
Re
cei
v
ed Ma
y 14, 201
5; Revi
sed
Jun
e
30, 2015; Accepted July 1
4
,
2015
Software Based
Approach for Teaching
in Electrical
Engineering Classroom Courses: a C
ase Stu
d
y
Hem
a
n
t
Meh
a
r
Dep
a
rtment of Electrical & El
e
c
tronics Eng
i
n
eer
i
ng, Institute of Engi
n
eer
in
g & Science,
IPS Academ
y
,
Indore Ma
dh
ya
Pradesh, Ind
i
a
E-mail: meharhemant@y
ahoo.com
A
b
st
r
a
ct
As the d
a
y
by
day c
h
a
nges
in th
e tech
no
logy
, tec
hnic
a
l
requ
ire
m
ents
and t
e
chn
i
q
u
e
s
of th
e
ind
u
stry chan
ges si
multan
e
ously. T
her
efo
r
e the re
quir
e
me
nts to ed
u
c
ate our stu
d
ents not o
n
ly
the
conce
p
tua
l
as
w
e
ll as
new
ap
proac
hes
bas
e
d
on
the
la
test
techni
qu
es. Involve
m
ent of s
o
ftw
are in teac
hi
n
g
i
s
n
o
t
o
n
l
y
pro
v
i
d
in
g
a
b
e
tte
r
su
p
p
o
r
t, mo
re
cl
ea
r an
d vi
su
a
l
o
p
e
r
ati
o
n
o
f
comp
le
x ci
rcu
i
ts and
w
a
veforms
of
the faculty of
pow
er electro
n
ics in
cl
assr
oo
m teach
i
n
g
as w
e
ll as to the stude
nt to
und
erstan
d a
better
conce
p
t. T
he softw
are
packa
ges
avai
l
abl
e for si
mu
la
tion of
pow
er
electro
n
ic circ
u
i
ts
are MATLAB, PSPICE and P
S
IM and many
mor
e
. In this
paper a
u
thor tak
e
s an exa
m
ple
of
an AC volta
g
e
control
l
er
to ex
plai
n th
e softw
are b
a
se
d tea
c
hin
g
a
ppro
a
c
h
. Author
use
d
tw
o softw
are base
d
si
mulati
o
n
tool to exp
l
ai
n the AC Vo
ltag
e Contro
ller a
nd
co
mpar
e the s
o
ftw
are based
appr
oach w
i
th the bl
ackb
oard
&
PPT
Presentati
on
base
d
tec
h
niq
ue. T
h
is
p
a
per is
h
e
lpf
u
l f
o
r the
faculty
o
f
electric
al
eng
i
neer
ing
to fi
nd
the
app
licati
ons of
MAT
L
AB/SIMU
LINK and PSI
M in teachi
ng.
Ke
y
w
ords
:
tea
c
hin
g
, educ
atio
n, AC-AC conv
erter, softw
are, engi
ne
erin
g
Copy
right
©
2015 In
stitu
t
e o
f
Ad
van
ced
En
g
i
n
eerin
g and
Scien
ce. All
rig
h
t
s reser
ve
d
.
1. Introduc
tion
The software
has grown in popul
a
r
ity, its usage in th
e edu
cational
field has be
come an
importa
nt preoccu
pation
for mo
re
an
d mo
re
univ
e
rsitie
s all
o
v
er
the wo
rl
d.
In
ele
c
tri
c
al
engin
eeri
ng, softwa
r
e envi
r
onm
ents like
MATLAB
and PSIM have
now the pote
n
tial to enhan
ce
the conte
n
t of a large variety of cou
r
se
s,
offerin
g
teache
rs th
e oppo
rtunity to develop new
edu
cation
al. There are variou
s
software
s
for l
earning the diff
erent
subj
ect
s
of ele
c
tri
c
al
engin
eeri
ng li
ke ci
rcuit theory, control system,
powe
r
system, po
wer ele
c
tro
n
ics and drive [1].
AC Voltag
e
controlle
rs are thyri
s
tor
b
a
se
d d
e
vice
s whi
c
h
conv
ert fixed
alte
rnating
voltage direct
ly to variable
alternatin
g voltage
withou
t a cha
nge i
n
the fre
que
ncy (Fi
gure
1).
Some of th
e
main a
ppli
c
at
ions of a
c
vol
t
age
cont
rolle
rs are fo
r d
o
m
estic a
nd i
n
dustri
a
l h
eati
ng,
transfo
rme
r
t
ap chan
ging,
lighting
cont
rol, speed
co
ntrol of
singl
e pha
se
and
three
pha
se
ac
drives a
nd st
arting of indu
ction moto
rs.
Earlier,
the
device
s
u
s
ed
for these a
p
p
licatio
ns
we
re
auto-tran
sformers, tap-ch
angin
g
tran
sforme
rs, ma
g
netic am
plifiers,
saturata
bl
e rea
c
tors et
c. but
these
devi
c
e
s
a
r
e
no
w
re
placed
by th
yristor an
d
tri
a
cs b
a
sed
a
c
voltag
e
co
ntrolle
rs be
cause
controlle
rs a
r
e also ad
apt
able for clo
s
e
d
loop co
ntro
l systems. Since t
he a
c
voltage co
ntrol
l
ers
are ph
ase co
ntrolled d
e
vices, thyristo
rs
and tria
cs a
r
e
line comm
utated and a
s
such n
o
com
p
l
e
x
comm
utation
circuitry is
re
quire
d in these controlle
rs.
Figure 1. Single – Phase full
wave AC voltage control
l
er
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046
TELKOM
NI
KA
Vol. 15, No. 2, August 2015 : 361 –
367
362
2.
The Ca
se Stud
y
2.1. Blackbo
a
rd Tech
nique in Real Cl
assroom
The ca
se
stu
d
y is done on
the topic of
the pow
er ele
c
troni
cs su
bje
c
t unde
r the electri
c
al
engin
eeri
ng
cou
r
ses
wo
rl
d wild u
n
iversities. Fo
r e
x
plaining thi
s
topic to ou
r stude
nts in
a
cla
s
sroo
m, we need to ma
ke the ci
rcuit on the bla
c
kb
oard, a
s
sh
o
w
n in the cap
t
ure Figu
re 2.
Figure 2. Blackboa
rd capt
ured im
age from cla
s
sro
o
m
To
explain th
e softwa
r
e uti
lity,
I applied the
different way in
the cla
s
sroo
m
and
capture
d
some
imag
es for differe
nt types of A
C
voltage
contro
l
l
er
circuits., d
ue to the la
ke
of spa
c
e
I
ha
ve
sho
w
n h
e
re just few n
u
m
ber ima
g
e
s
from
the
classro
o
m, tho
s
e
are
sufficien
t to explain the
applie
d meth
odolo
g
y. Here I need to make the
circuit on bla
c
kboard and wi
th these nee
ds to
make
the
wa
ves fo
r thi
s
p
a
rticul
ar ci
rcu
i
t by taki
ng
some im
agin
a
ry angle
α
. In
this
black
b
oard I
take it
at
90
d
egre
e
s. I
nee
d a
lot
of time to ma
ke
thi
s
ci
rcuit
an
d
resp
ective
wa
ves a
nd eve
n
I
want to
ch
a
nge the
firin
g
angl
e, I u
nable to
do
in the
sam
e
and
if, I
come
a ve
ry
bad
pre
s
entatio
n. Here whole t
he proc
ess i
s
just an i
m
agi
nary, ope
ratio
n
of the devi
c
es a
nd d
r
a
w
i
ng
their wave
s is also a typical
and time con
s
umin
g tasks.
2.2.
Presentation Tec
hni
que in Real
Classr
oom
For the b
e
tter un
derstan
ding an
d for the ti
me sa
ving and fo
r
clea
r views,
we
can
also
a
dapt
a
pre
s
entatio
n techni
que
s, this meth
o
d
of teachin
g
is also sho
w
n in the below
captu
r
ed Fi
gu
re 6 & Figu
re
7. These met
hod
s are
prov
iding lots of
si
mplicity to explain con
c
ept
s
of wo
rking
of
AC volta
ge
controlle
r, bu
t with th
i
s
we
nee
d
also
th
e ima
g
ination
of o
peration
of
cir
c
uit
s
.
Figure 3. Blackboa
rd capt
ured im
age from
cla
s
sroo
m of Presentation
Figure 4. Blackboa
rd capt
ured im
age from
cla
s
sroo
m of Presentation
2.3.
Simulation Techniqu
e in Real Cla
ssroom
Below
captu
r
ed Figu
re
s 5-8 sho
w
n the
appli
c
ability o
f
the propo
se
d method. Here
the
authors
u
s
e
the two
simulatio
n
t
ools for
expl
aining
the
AC voltag
e controll
er,
i.e.
Evaluation Warning : The document was created with Spire.PDF for Python.
TELKOM
NIKA
ISSN:
2302-4
046
Software Ba
sed Approa
ch
for Tea
c
hin
g
in Electr
i
c
al Engine
erin
g Cl
assro
o
m
…
(Hem
ant Meh
a
r)
363
MATLAB/SIMULINK an
d PSIM. Here we can ea
sily
explain the o
peratio
n of these
circuits by
dra
w
ing j
u
st i
n
a fe
w seco
nds
or
by pre
pre
pari
ng fo
r
this ci
rcuit
and ju
st sim
u
l
a
te and
ru
n it in
front of the st
udent in th
e cla
s
sroo
m. These prov
ide
a virtual op
eration an
d wit
h
the hel
p of the
input pul
se
s we can ea
sily
chan
ge the shape/
p
e
rfo
r
m
ance of the ci
rcuit an
d devi
c
e
s
.
Figure 5. capt
ured im
age from cla
s
sro
o
m
of
teachi
ng u
s
in
g MATLAB/SIMULINK Soft
ware
Figure 6. Cap
t
ured ima
ge from cl
assroo
m of
teachi
ng u
s
in
g MATLAB/SIMULINK Soft
ware
Figure 7. Cap
t
ured ima
ge from cl
assroo
m of
teachi
ng u
s
in
g PSIM Softw
are
Figure 8. Cap
t
ured ima
ge from cl
assroo
m of
teachi
ng u
s
in
g PSIM Softw
are
3. Resul
t
s
and
Analy
s
is
3.1. MATLAB/SIMULINK
Bas
e
d Simulation
MATLAB/SIMULINK ba
se
d
Simulation model for
AC voltage cont
rolle
r is sh
own in fig
.
belo
w
. The p
e
rform
a
n
c
e o
f
the device
s
is rep
r
e
s
e
n
ted with the h
e
lp of wavefo
rms in fig
u
re.
In
this figu
re
the
wave
s fo
r
ou
tput voltage,
curre
n
t an
d V
& I a
c
ross th
e devi
c
e
are
sho
w
n, fo
r th
e
simpli
city of the con
c
ept of
learning
and
pre
s
e
n
tation
of pro
p
o
s
ed
method
here
only a resi
sti
v
e
load
is con
s
id
ered.
Here with the
chan
ge of the setting of the
Pulse G
e
nerato
r
we can ea
sily cha
nge the
firing an
gle of
the device.
We
can al
so
adopt the di
ff
erent firin
g
scheme
s
, but for this p
a
rti
c
u
l
ar
appli
c
ation th
e pul
se
gen
e
r
ator is the b
e
st
suitabl
e
o
p
tion. Fo
r the
different typ
e
of the
load
we
can
cho
o
se the different types of filter
in
g circuits to i
m
prove the o
peratio
n.
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ISSN: 23
02-4
046
TELKOM
NI
KA
Vol. 15, No. 2, August 2015 : 361 –
367
364
Figure 9. Simulation Mod
e
l
of Single Phase
half Wave AC Voltage Cont
rolle
r
Figure 10. Output Wavefo
rms of Single
Phase
half wave AC Voltage Cont
rolle
r
Figure 11. Simulation Mo
d
e
l of Single Phase
full wave AC Voltage Co
ntroller
Figure 12. Simulation Mo
d
e
l of Single Phase
full wave AC Voltage Co
ntroller
3.2. PSIM B
ased Simulation
A PSIM base
d
Simulation
model fo
r A
C
voltage
cont
rolle
r is sho
w
n in figu
re
s
belo
w
.
The pe
rform
ance of the device
s
is re
pre
s
ente
d
wi
t
h
the help of waveform
s in figure
s
. In this
figure
s
th
e waves
fo
r out
put
voltage,
curre
n
t
an
d V
&
I
a
c
ross
the device
are
sho
w
n. For
simpli
city of the con
c
ept of
learning
and
pre
s
e
n
tation
of pro
p
o
s
ed
method
here
only a resi
sti
v
e
load
is con
s
id
ered.
Figure 13. Simulation Mo
d
e
l of Single Phase
half wave AC Voltage Cont
rolle
r
Figure 14. Ou
tput of Single Phase h
a
lf wave
AC Voltage Controlle
r
Evaluation Warning : The document was created with Spire.PDF for Python.
TELKOM
NIKA
ISSN:
2302-4
046
Software Ba
sed Approa
ch
for Tea
c
hin
g
in Electr
i
c
al Engine
erin
g Cl
assro
o
m
…
(Hem
ant Meh
a
r)
365
Figure 15. Simulation Mo
d
e
l of Single Phase
full wave AC Voltage Co
ntroller
Figure 16. Ou
tput of Single Phase h
a
lf Wave
AC Voltage Controlle
r
Here with th
e
cha
nge of th
e setting of t
he Gate Pul
s
e we
can
ea
sily ch
ange t
he firing
angle
of the
device.
We
can
also ad
opt the diffe
rent firing
sch
e
mes, b
u
t for this p
a
rti
c
ul
ar
appli
c
ation th
e pul
se
gen
e
r
ator is the b
e
st
suitabl
e
o
p
tion. Fo
r the
different typ
e
of the
load
we
can
cho
o
se the different types of filter
in
g circuits to i
m
prove the o
peratio
n.
Table 1. Co
m
pari
s
on b
e
tween Blackb
oa
rd, Pre
s
entati
on and Software App
r
oa
ch
Parameters
Blackboard
Presentation
Software
Circuit making time
Around 2 minute
s
Le
ss than 1 minutes
Less than 1 minutes
Output waves
dr
aw
ing
time
Approx.
5-10 min
u
tes
Sho
w
n b
y
fig.
In fe
w
seconds b
a
sed on
simulation time
Clarit
y
of pe
rform
ance
Depends upon
d
r
aw
in
g
Much higher
Much higher
Pre-pr
eparation
Must/use
notes
Required
Performance sho
w
n
b
y
simulation
Modification
Not possible
Not possible
Easily
possible
Firing angles
Fixed an
d unable
to
change
Easily
changed b
y
simple
resetting
Easily
changed b
y
simple
resetting
Explanation level
Poor
Higher
Higher
Circuit making time
Around 2 minute
s
Le
ss than 1 minutes
Less than 1 minutes
Output waves
dr
aw
ing
time
Approx.
5-10 min
u
tes
Sho
w
n b
y
fig.
In fe
w
seconds b
a
sed on
simulation time
Clarit
y
of pe
rform
ance
Depends upon
d
r
aw
in
g
Much higher
Much higher
Pre-pr
eparation
Must/use
notes
Required
Performance sho
w
n
b
y
simulation
Modification
Not possible
Not possible
Easily
possible
Firing angles
Fixed an
d unable
to
change
Easily
changed b
y
simple
resetting
Easily
changed b
y
simple
resetting
Explanation level
Poor
Higher
Higher
Circuit making time
Around 2 minute
s
Le
ss than 1 minutes
Less than 1 minutes
4.
Adv
a
ntages
and Limitati
ons of Soft
w
a
re Ap
proac
h
The follo
wing
advantag
es
derived
when
usin
g Software i
n
tea
c
hi
ng po
we
r el
e
c
troni
cs
cou
r
s
e
s:
1)
It provides be
tter visual op
erati
on of po
wer el
ect
r
oni
cs
conve
r
ters.
2)
Use of softwa
r
e in cla
s
sroo
m sa
ve the time of the faculty.
3)
With user-frie
ndly interface
,
simulati
on speed, capabil
i
ty of simulating any type of
power conve
r
ters an
d co
ntrol circuits.
4)
Students can use
thi
s
softw
are for thei
r p
r
oje
c
t wo
rks.
Evaluation Warning : The document was created with Spire.PDF for Python.
ISSN: 23
02-4
046
TELKOM
NI
KA
Vol. 15, No. 2, August 2015 : 361 –
367
366
This pa
per p
r
ovides a ba
si
c app
roa
c
h to
deal
with the
software. The only limitation with
this software
approa
ch i
s
that the kn
owle
dge of
compute
r
an
d
depth
kno
w
l
edge
of power
electroni
cs
su
bject is n
e
cessary
to identif
y the truth results.
5. Conclu
sion
This
ca
se st
udy provide
s
the visual o
perat
io
ns
of power ele
c
tronics conve
r
ters. Thi
s
Paper
provides a
co
mpa
r
i
s
on
between
blackb
oard
& pre
s
entat
io
n
app
roa
c
h
verse
s
software
approa
ch. As powe
r
ele
c
tronic
system
s
are g
e
tti
ng more
compl
e
x today, the sim
u
lation u
s
ed f
o
r
edu
cation i
s
requi
rin
g
mo
re features. T
h
is a
p
p
r
oa
ch
is time
savin
g
and
so
me
dire
ction
s
in t
he
developm
ent
of sim
u
lation
are
di
scu
sse
d
in thi
s
pap
e
r
, with
the
hel
p of p
r
e
s
e
n
t
model
stud
en
ts
can
simulate
the power ele
c
troni
cs ci
rcui
t with various
load & con
d
itions.
Ackn
o
w
l
e
dg
ements
The a
u
thor
woul
d like to
than
k to
wo
rkin
g o
r
ga
nization, IES IPS Acad
emy, and
the
depa
rtment
o
f
Electrical & Electro
n
ics Engine
erin
g for providing the
reso
urce
s for this wo
rk. T
he
author al
so
woul
d like to
thank
the
st
udent
s, fa
cul
t
ies an
d
re
ad
ers
of
my pa
pers for thei
r
valuable sug
gestio
n
s.
Referen
ces
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