International Journal of Applied Science
www.ijas.org.uk
Original Article
Basic Design and Review of Two Phase and Three Phase
Interleaved Boost Converter for Renewable Energy Systems
Chitra.P*1 and Seyezhai.R2
1
Research Assistant,
Department of EEE, SSN College of Engineering, Chennai, India
2
Associate Professor,
Department of EEE, SSN College of Engineering, Chennai, India
A R T I C L E
I N F O
Received 18 June 2014
Received in revised form 22 June 2014
Accepted 05 July 2014
Keywords:
Renewable Energy sources,
Two Phase IBC,
Three Phase IBC,
Inductor currents,
Comparison,
Ripple & duty ratio.
A B S T R A C T
This paper investigates the performance of two-phase and three-phase
Interleaved Boost Converter (IBC) for renewable energy applications. By
employing three-stage IBC, the overall current ripple can be effectively
reduced which increases the lifetime of renewable sources [1-3]. In this
paper, a three phase interleaved boost converter has been discussed and it
is compared to the conventional two-phase IBC presented in the
literature. The advantage of three Phase IBC compared to the two Phase
is low input current ripple [4,5]. The output voltage, input current and
inductor current ripples of the two types of converters are compared for
various duty cycles. Simulation is carried out in MATLAB/SIMULINK.
The results are discussed and verified with the theoretical values.
Corresponding
author:
Research
Assistant, Department of EEE, SSN
College of Engineering, Chennai, India
E-mail address:
[email protected]
© 2014 International Journal of Applied Science- All rights reserved
INTRODUCTION
The depletion of fossil fuels and global
warming, caused largely by greenhouse gas
emissions led to the development of nonconventional energy sources. These sources of
energy are also called Renewable energy.
Renewable sources are continuously replenished
by natural processes. Renewable energy comes
from many commonly known sources such as
solar power, wind, running water and
geothermal energy. Also another great benefit
from using renewable energy is that many of
them do not pollute our air and water, the way
burning fossil fuels does. Any such renewable
energy system requires a suitable converter to
make it efficient. Interleaved boost converter is
one such converter that can be used for these
applications. Interleaved boost converter is a
promising interface between renewable energy
sources such as fuel cells, PV and the DC bus of
inverters. Due to interleaving operation, IBC
exhibits both lower current ripple at the input
side and lower voltage ripple at the output side.6
Here two IBC topologies are discussed namely:
Two and Three Phase. The frequency of the
current ripple is twice for two phase IBC than
the conventional boost converter. Due to a phase
Chitra.P et al___________________________________________________ ISSN: 2394-9988
shift of 180 degrees ripple cancellation takes
place. In this paper the operation of both two
phase and three phase IBCs are discussed. The
waveforms of input, inductor current ripple and
output voltage ripple are obtained using
MATLAB/SIMULINK. The design equations
for two phase as well as three phase IBCs have
been presented. Output RMS currents are
calculated.
Design Equations
1. Boost ratio
The boosting ratio of the IBC is a
function of the duty ratio. It is same as in
conventional boost converter. It is defined as
Vo
1
Vin = 1  D
(1)
TWO PHASE IBC
Circuit Operation
The circuit of two phase interleaved
boost converter is shown in Fig.1. When the
device M is turned ON, the current in the
inductor L increases linearly. During this period
energy is stored in the inductor L. When M is
turned OFF, diode D conducts and the stored
energy in the inductor ramps down with a slope
based on the difference between the input and
the output voltage. The inductor starts to
discharge and transfer the current to the load
through the diode. After a half switching cycle
of M, M1 is also turned ON completing the
same cycle of events. Since both the power
channels are combined at the output capacitor,
the effective ripple frequency is twice that of a
single phase boost converter. The amplitude of
the input current ripple is small. This advantage
makes this topology very attractive for the
renewable energy sources. The gating pulses of
the two devices are shifted by a phase difference
of 360/n, where n is the number of parallel boost
converters connected in parallel. For a two phase
interleaved boost converter n=2, the phase shift
is 180 degrees and it is shown in Fig.2. It can be
seen that the input current, for two phase
interleaved boost converter is the sum of each
channel inductors currents. As the two devices
are phase shifted by 180 degrees, the input
current ripple is minimum.7-12
When the duty ratio is less than 0.5 the
ideal waveforms are shown in Fig.2. Here the
duty ratio is 0.2.
When the duty ratio is greater than 0.5
the waveforms are shown in Fig.3. Here the duty
ratio is 0.75.
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Where Vo is the output voltage, is the Vin
input voltage and D is the duty ratio.
2. Input current
The input current can be calculated by
the input power and the input voltage.
I in
Pin
V
= in
Where Iin is the input current,
power and
(2)
Pin is the input
Vin the input voltage.
3. Inductor current ripple peak-to-peak
amplitude
The inductor current ripple peak-peak
amplitude is given by
V in D
I l1,l 2 F S L
=
(3)
Where Vin represents the input voltage, D
represents the duty ratio, F S represents the
switching frequency and L represents the value
of the inductor.
4. Selection of inductor and capacitor
In the power electronic systems the
magnetic components play a major role for
energy storage and filtering. As discussed in the
operation of IBC the inductor is used to
transform the energy from the input voltage to
the inductor current and to convert it back from
the inductor current to the output voltage. As per
the principle the two inductors shown in the Fig.
1. are identical in order to balance the current in
Chitra.P et al___________________________________________________ ISSN: 2394-9988
the two boost converters. The value of the
inductor can be found out by the following
formula
L
Vin DTS
2I o
(4)
Where, TS -Switching
period, I o -Output
current ripple,
The value of the capacitor is given by
the formula
C
DVo
RVo FS
Where, R- Load resistor,
(5)
Vo -Output
voltage
ripple and V o - Output voltage
5. Output RMS Current
i. For   0.5 :
I CoRMS =
I out
 (1   )
2(1   )
(6)
Where I out =Output current
ii. For   0.5 :
I CoRMS
=
(7)
I out
1
(2  1)(2  2 )
2(1   ) 2
Simulation Parameters
Simulation Parameters are shown in Table.1.
Simulation Results
i) For   0.5
The switching patterns of two MOSFETs (M
and M1) used in the two phase IBC is shown in
Fig.4.The pulse of second switch is phase shifted by
180 degrees from the first device.
The input current and the current through
the parallel inductors are shown in Fig.5.They can be
obtained as 6.1 A and 3.1A respectively. It can be
inferred from the figure that the inductor currents are
same. Using these waveforms the input current ripple
is obtained as 0.008A and inductor current ripple is
obtained as 0.023A.
The output current waveform is shown
in Fig.6.It is obtained as 4.8 A.
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The output voltage waveform is shown
in Fig.7.It is obtained as 24 V.
Output current ripple waveform is
shown in Fig.8.Ripple current of 0.0003A is also
calculated using this waveform.
Output Voltage Ripple waveform is
shown in Fig.9. Voltage Ripple of 0.0003V is
also calculated using this waveform.
ii) For   0.5
The switching patterns of two
MOSFETs (M and M1) used in the two phase
IBC is shown in Fig.10.The pulse of second
switch is phase shifted by 180 degrees from the
first device.
The input and inductor currents are
shown in Fig.11.They can be obtained as 41 A
and 21A respectively. Using these waveforms
the input current ripple is obtained as 0.009A
and inductor current ripple is obtained as
0.003A.
The output current waveform is shown
in Fig.12.It is obtained as 12.2 A.
The output voltage waveform is shown
in Fig.13.It is obtained as 71 V.
Output current ripple waveform is
shown in Fig.14.Ripple current of 0.00007A is
also calculated using this waveform.
Output Voltage Ripple waveform is
shown in Fig.15. Voltage Ripple of 0.00006 V is
also calculated using this waveform.
THREE PHASE IBC
Circuit Operation
The circuit diagram for three phase
Interleaved Boost Converter is shown in Fig.16.
The number of inductors and switches are the
same as the number of phases. However, a
single capacitor is used as a filter in IBC.
Because the output current of the source l is
divided by 1/N times separately, the current
stress in IBC can be reduced. Each phase
switching frequency of 3-phase IBC can be
identical and each switch has same phase shift
angle as 360°/N. According to the duty ratio,
switching sequences of each phase can be
overlapped or not. While IBC is operated at nonoverlapped condition, the input current ripple is
decreased. However, it is linearly increased after
switching sequence is totally overlapped.13,14
Chitra.P et al___________________________________________________ ISSN: 2394-9988
Ideal Waveforms for   0.5
When the duty ratio is less than 0.5 the
waveforms are obtained as shown in Fig.17.
Here the duty ratio is 0.2.
4. Selection of inductor and capacitor
The value of the inductor can be found
out by the following formula
L
Ideal Waveforms for   0.5
When the duty ratio is at 0.5 the
waveforms are obtained as shown in Fig.18.
Vin DTS
2I o
(11)
Where, TS -Switching period and I o -Output
current ripple
The value of the capacitor is given by
the formula
Ideal Waveforms for   0.5
When the duty ratio is greater than 0.5
the waveforms are obtained as shown in Fig.19.
Here the duty ratio is 0.75.
C
DVo
RVo FS
(12)
Design Equations
Where, R- Load resistor,  V o -Output voltage
1. Duty ratio
Duty ratio is defined as
ripple and V o - Output voltage
5. Output RMS Current
Vo
1
(8)
=
Vin 1  D
Where Vo is the output voltage, V in is the input
i) For   0.5
I CoRMS
=
voltage and D is the duty ratio.
=
Pin
Vin
I CoRMS =
(9)
Where I in is the input current, Pin is the input
3. Inductor current ripple peak-to-peak
amplitude
The inductor current ripple peak-peak
amplitude is given by
(10)
Where Vin represents the input voltage, D
represents the duty ratio, F S represents the
switching frequency and L represents the value
of the inductor.
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I out
1
(3  1)(2  3 )
3(1   ) 3
(14)
I out
1
(3  2)(3  3 )
3(1   ) 3
(15)
iii) For   0.5
I CoRMS
power and V in the input voltage.
V D
I l1,l 2 = in
FS L
(13)
ii) For   0.5
2. Input current
The input current can be calculated by
the formula,
I in
I out
 (1  3 )
3(1   )
=
Simulation Parameters
Simulation Parameters are shown in
Table.2.
i) For   0.5
Simulation Results
i) For   0.5
The switching patterns of three
MOSFETs (M, M1and M2) used in the three
phase IBC is shown in Fig.20.The phase shift is
120(360/n) degrees.
The input and inductor currents are
shown in Fig.21.They can be obtained as 6 A
Chitra.P et al___________________________________________________ ISSN: 2394-9988
and 2.9A respectively. Using these waveforms
the input current ripple is obtained as 0.0033A
and inductor current ripple is obtained as
0.0086A.
The output current waveform is shown
in Fig.22.It is obtained as 4.3 A.
The output voltage waveform is shown
in Fig.23.It is obtained as 24 V.
Output current ripple waveform is
shown in Fig.24.Ripple current of 0.00025 is
also calculated using this waveform.
Output Voltage Ripple waveform is
shown in Fig.25. Voltage Ripple of 0.00025V is
also calculated using this waveform.
ii) For   0.5
The switching patterns of three
MOSFETs (M, M1and M2) used in the three
phase IBC is shown in Fig.26.The phase shift is
120(360/n) degrees.
The input and inductor currents are
shown in Fig.27.They can be obtained as 15.5 A
and 4.9A respectively. Using these waveforms
the input current ripple is obtained as 0.0032A
and inductor current ripple is obtained as
0.015A.
The output current waveform is shown
in Fig.28.It is obtained as 7.7 A.
The output voltage waveform is shown
in Fig.29.It is obtained as 38.6 V.
Output current ripple waveform is
shown in Fig.30.Ripple current of 0.00014A is
also calculated using this waveform.
Output Voltage Ripple waveform is
shown in Fig.31. Voltage Ripple of 0.00016V is
also calculated using this waveform.
iii) For   0.5
The switching patterns of three
MOSFETs (M, M1and M2) used in the three
phase IBC is shown in Fig.32. The phase shift is
120(360/n) degrees.
The input and inductor currents are
shown in Fig.33. They can be obtained as 16 A
and 5.3A respectively. Using these waveforms
the input current ripple is obtained as 0.00019A
and inductor current ripple is obtained as
0.005A.
The output current waveform is shown
in Fig.34.It is obtained as 14.6 A.
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The output voltage waveform is shown
in Fig.35.It is obtained as 73.2 V.
Output current ripple waveform is
shown in Fig.36.Ripple current of 0.000024A is
also calculated using this waveform.
Output Voltage Ripple waveform is
shown in Fig.37. Voltage Ripple of 0.000024V
is also calculated using this waveform.
COMPARISON BETWEEN TWO PHASE
AND THREE PHASE IBC
Current ripple and voltage ripples are
minimum for a three phase IBC when compared
with two phase IBC ripple.
The values of the ripple contents are
summarized as follows:
Two Phase IBC
Table.3.gives the values of ripples of
Two Phase IBC
It can be inferred from the above table
that the ripples are reduced with the increased
duty ratio.
Three Phase IBC
Table.4.gives the values of ripples of
Three Phase IBC
It is clear from the above table that the
ripples are reduced for three phase IBC
compared with two phase IBC. In three phase
IBC itself, it has low ripples for higher duty
ratios. By observing output voltage and output
current ripples, are also same for all the cases of
duty ratio.
Output RMS currents are calculated for
both two phase and three phase IBC. They are
listed in Table.5.
It is obvious from the above table that
the Output RMS Currents are maximum in case
of two phase IBC.
CONCLUSION
This paper has discussed the basic design
aspects of two phase and three phase interleaved
boost converters. The feature and performance of
both the IBCs under various duty cycle conditions
have been investigated. It is found that the threephase interleaved boost converter provides a
reduced input current and output voltage ripple
Chitra.P et al___________________________________________________ ISSN: 2394-9988
compared to the classical two-phase IBC. Also,
the output RMS current in three-phase IBC is less
which results in the reduction of the size of the
output capacitor filter. Therefore, a three-phase
IBC proves to be a suitable candidate for
renewable energy sources.
9.
REFERENCES
1.
2.
3.
4.
5.
6.
7.
8.
Thounthong, P. ; Sethakul, P. ; Rael, S. ; Davat,
B. ,” Design and implementation of 2phase interleaved boost converter for fuel cell
power source”, Power Electronics, Machines and
Drives, 2008. PEMD 2008. 4th IET
Conference Publication Year: 2008, Page(s): 91 95.
YoungSun
Lee ; SeYoung
Park ; Jul-Ki
Seok, “Modeling and control of average input
current to enhance power density for threephase interleaved boost converters” Energy
Conversion Congress and Exposition (ECCE),
2013 IEEE, Publication Year: 2013 , Page(s):
4857 – 4863.
Ho,
C.N.M. ; Breuninger,
H. ; Pettersson,
S. ; Escobar, G. ;Serpa, L. ; Coccia, A., ”
Practical implementation of an interleaved boost
converter using SiC diodes for PV applications”,
Power Electronics and ECCE Asia (ICPE &
ECCE), 2011 IEEE 8th International Conference
Publication Year: 2011 , Page(s): 372 - 379.
Jungwan
Choi; Hanju
Cha ; Byung-Moon
Han,"A Three-Phase Interleaved DC–
DC Converter With Active Clamp for Fuel
Cells” Power Electronics, IEEE Transactions
Volume: 25, Issue: 8, Publication Year: 2010 ,
Page(s): 2115 - 2123
Hirakawa, M.; Nagano, M.; Watanabe, Y.; Ando,
K.; Nakatomi, S. ; Hashino, S.; Shimizu, T. ,”
High power density interleaved DC/DC converter
using a 3-phase integrated close-coupled inductor
set aimed for electric vehicles”,Energy
Conversion Congress and Exposition (ECCE),
2010 IEEE, Publication Year: 2010 , Page(s):
2451 - 2457
Dr Miroslav Lazić, Dr Miloš Živanov and Boris
Šašić, ”Design of Multiphase Boost Converter for
Hybrid Fuel Cell/Battery Power Sources”
Harinee, M.; Nagarajan, V.S.; Dimple; Seyezhai,
R. ;Mathur, B.L.,” Modeling and design of fuel
cell based two phase interleaved boost converter”,
Electrical Energy Systems (ICEES), 2011 1st
International Conference, Publication Year: 2011,
Page(s): 72 - 77 .
Chung Ping Ku ; Dan Chen ; Chin Yuan Liu,” A
novel SFVM control scheme for two-phase
IJAS [1][1]2014 001-026
10.
11.
12.
13.
14.
15.
interleaved CCM/DCM boundary mode boost
converter in
power
factor
correction
applications”, .Energy Conversion Congress and
Exposition (ECCE), 2010 IEEE ,Publication
Year: 2010 , Page(s): 906 - 911
Phattanasak, M. ; Kaewmanee, W.; Thounthong,
P.;
Gavagsaz-Ghoachani,
R.; Martin,
J.P. ; PIERFEDERICI, S.; Davat, B.; Zandi,
M.,"Study
of two-hase interleaved boost
converter using coupled inductors for a fuel
cell” Electrical
Engineering/Electronics,
Computer, Telecommunications and Information
Technology
(ECTI-CON),
2013
10th
International Conference Publication Year:
2013 , Page(s): 1 – .6
Longlong Zhang; Guoqiao Shen; Min Chen;
Ioinovici,
Adrain; Dehong
Xu,”Twophase interleaved boost converter with
voltage
multiplier under APS control method for fuel cell
power system”, Power Electronics and Motion
Control Conference (IPEMC), 2012 7th
International ,Publication Year: 2012 , Page(s):
963 – 967.
Yong-Seong Roh ; Young-Jin Moon; Jeongpyo
Park ;
Changsik
Yoo,"A TwoPhase Interleaved Power
Factor
Correction
Boost Converter With a Variation-Tolerant Phase
Shifting Technique” Power Electronics, IEEE
Transactions Publication Year: 2014, Page(s):
1032 – 1040.
Xu, Xiaojun; Wei Liu ; Huang, A.Q. ,”TwoPhase Interleaved Critical Mode PFC Boost
Converter With
Closed
Loop Interleaving Strategy” Power Electronics,
IEEE Transactions, Volume: 24 , Publication
Year: 2009, Page(s): 3003 - 3013
Hanju Cha; Jungwan Choi; Byung-Moon Han,
”A
new three-phase interleaved isolated boost
converter with active clamp for fuel cells” Power
Electronics Specialists Conference, 2008. PESC
2008. IEEE, Publication Year: 2008 , Page(s):
1271 - 1276
Hanju
Cha; Jungwan
Choi ; Woojung
Kim; Blasko, V., ”A New Bi-directional Three
phase Interleaved Isolated Converter with Active
Clamp”, Applied Power Electronics Conference
and Exposition, 2009. APEC 2009. TwentyFourth Annual IEEE, Publication Year: 2009 ,
Page(s): 1766 - 1772
The Van Nguyen; Jeannin, P.; Crebier, J.C. ; Schanen, J.-L.,”A new compact, isolated and
integrated gate driver using high frequency
transformer
for interleaved
Boost
converter”, Energy Conversion Congress and
Exposition (ECCE), 2011 IEEE ,Publication
Year: 2011, Page(s): 1889 - 1896
Chitra.P et al___________________________________________________ ISSN: 2394-9988
Table 1. Simulation Parameters
Parameter
Designator
Input Voltage
Inductor
Capacitor
Switching Frequency
V in
L
C
Fs
Value
Value
  0.5
  0.5
20 V
11 mH
10 mF
5KHz
20 V
42 mH
120 mF
5KHz
Table 2. Simulation Parameters
Value
Value
Value
  0.5
  0.5
  0.5
Vin
20 V
20 V
20 V
L
C
11 mH
10 mF
5KHz
28 mH
40 mF
5KHz
42 mH
120 mF
5KHz
Parameter
Designator
Input Voltage
Inductor
Capacitor
Switching Frequency
FS
Table 3. Parameters of Two Phase IBC
Type of Ripple
Input current ripple
Inductor current ripple
Output current ripple
Output voltage ripple
  0.5
  0.5
(   0.2 )
0.008
0.023
0.0003
0.0003
(   0.75 )
0.009
0.003
0.00007
0.00006
Table 4. Parameters of Three Phase IBC
Type of Ripple
  0.5
(   0.2 )
  0.5
  0.5
(   0.75 )
Input current ripple
0.0033
0.0032
0.00019
Inductor current ripple
0.0086
0.015
0.005
Output current ripple
0.00025
0.00014
0.000024
Output voltage ripple
0.00025
0.00016
0.000024
Table 5. Output RMS Currents
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Value of  /Type of IBC
  0.5
(   0.2 )
  0.5
(   0.75 )
Two Phase IBC
Three Phase IBC
1.25A
0.589A
11.3A
5.33A
Figure 1. Circuit Diagram of Two Phase IBC
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Figure 2. Ideal Waveforms for   0.5 of Two Phase IBC
Figure 3. Ideal waveforms for   0.5 for two phase IBC
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5
Voltage(V)
4
3
2
1
0
0.93
0.9302
0.9304
0.9306
0.9308
0.931
Time(S)
0.9312
0.9314
0.9316
0.9318
0.932
0.9302
0.9304
0.9306
0.9308
0.931
Time(S)
0.9312
0.9314
0.9316
0.9318
0.932
5
Voltage(V)
4
3
2
1
0
0.93
Figure 4. Gating Patterns of Two MOSFETs (M and M1)
Current(A)
6.1
6.08
6.06
6.04
0.64
0.6405
0.641
0.6415
0.641
0.6415
0.641
0.6415
Time(S)
Current(A)
3.08
3.06
3.04
3.02
3
2.98
0.64
0.6405
Time(S)
Current(A)
3.08
3.06
3.04
3.02
3
2.98
0.64
0.6405
Time(S)
Figure 5. Input current and Inductors (L 1 and L 2 ) Currents
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9
8
7
Current(A)
6
5
4
3
2
1
0
0
0.1
0.2
0.3
0.4
0.5
Time(S)
0.6
0.7
0.8
0.7
0.8
0.9
1
Figure 6. Output Current waveform
45
40
35
Voltage(V)
30
25
20
15
10
5
0
0
0.1
0.2
0.3
0.4
0.5
Time(S)
0.6
Figure 7. Output voltage waveform
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0.9
1
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4.8448
4.8446
4.8444
Current(A)
4.8442
4.844
4.8438
4.8436
4.8434
4.8432
0.946
0.9461
0.9462
0.9463
0.9464
0.9465
Time(S)
0.9466
0.9467
0.9468
0.9469
0.947
Figure 8. Output Current Ripple Waveform
24.224
24.223
24.222
Voltage(V)
24.221
24.22
24.219
24.218
24.217
24.216
0.95
0.9501
0.9502
0.9503
0.9504
0.9505
Time(S)
0.9506
Figure 9. Voltage Ripple Waveform
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0.9507
0.9508
0.9509
0.951
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5
Voltage(V)
4
3
2
1
0
9.9
9.9002
9.9004
9.9006
9.9008
9.901
Time(S)
9.9012
9.9014
9.9016
9.9018
9.902
9.9002
9.9004
9.9006
9.9008
9.901
Time(S)
9.9012
9.9014
9.9016
9.9018
9.902
5
Voltage(V)
4
3
2
1
0
9.9
Figure 10. Gating Patterns of MOSFTs (M and M1)
Current(A)
41.04
41.03
41.02
41.01
41
4.44
4.4401
4.4402
4.4403
4.4404
4.4405
Time(S)
4.4406
4.4407
4.4408
4.4409
4.441
4.9202
4.9204
4.9206
4.9208
4.921
Time(S)
4.9212
4.9214
4.9216
4.9218
4.922
4.9202
4.9204
4.9206
4.9208
4.921
Time(S)
4.9212
4.9214
4.9216
4.9218
4.922
Current(A)
20.48
20.46
20.44
4.92
Current(A)
20.48
20.46
20.44
4.92
Figure 11. Input Current and Inductors (L 1 and L 2 ) Currents
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
18
16
14
Current(A)
12
10
8
6
4
2
0
0
1
2
3
4
5
Time(S)
6
7
8
9
10
7
8
9
10
Figure 12. Output Current
100
90
80
Voltage(V)
70
60
50
40
30
20
10
0
1
2
3
4
5
Time(S)
6
Figure 13. Output Voltage
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
12.2311
12.231
12.2309
Current(A)
12.2308
12.2307
12.2306
12.2305
12.2304
12.2303
12.2302
5.25
5.2501
5.2502
5.2503
5.2504
5.2505
Time(S)
5.2506
5.2507
5.2508
5.2509
5.251
Figure 14. Current Ripple Waveform
71.1645
71.164
71.1635
Voltage(V)
71.163
71.1625
71.162
71.1615
71.161
71.1605
9.5
9.5001
9.5002
9.5003
9.5004
9.5005
Time(S)
9.5006
Figure 15. Voltage Ripple Waveform
IJAS [1][1]2014 001-026
9.5007
9.5008
9.5009
9.501
Chitra.P et al___________________________________________________ ISSN: 2394-9988
Figure 16. Circuit Diagram of Three Phase IBC
Figure 17. Ideal waveforms for three phase IBC when   0.5
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
Figure 18. Ideal waveforms for three phase IBC when   0.5
Figure 19. Ideal waveforms for three phase IBC when   0.5
IJAS [1][1]2014 001-026
Voltage(V)
Chitra.P et al___________________________________________________ ISSN: 2394-9988
4
2
Voltage(V)
0
0.2
0.4
0.6
0.8
1
Time(S)
1.2
1
Time(S)
1.2
1
Time(S)
1.2
1.4
1.6
1.8
2
x 10
-3
4
2
0
Voltage(V)
0
0
0.2
0.4
0.6
0.8
1.4
1.6
1.8
2
x 10
-3
4
2
0
0
0.2
0.4
0.6
0.8
1.4
1.6
1.8
2
x 10
-3
Current(A)
Current(A)
Figure 20. Gating Patterns of three(M,M1,M2) MOSFETs
6.04
6.03
6.02
0.47
Current(A)
0.4704
0.4706
0.4708
Time(S)
0.471
0.4712
0.4714
0.4716
0.4702
0.4704
0.4706
0.4708
Time(S)
0.471
0.4712
0.4714
0.4716
0.4702
0.4704
0.4706
0.4708
Time(S)
0.471
0.4712
0.4714
0.4716
0.4702
0.4704
0.4706
0.4708
Time(S)
0.471
0.4712
0.4714
0.4716
2.93
2.92
2.91
0.47
Current(A)
0.4702
2.93
2.92
2.91
0.47
2.93
2.92
2.91
0.47
Figure 21. Input current and Inductors (L, L 1 and L 2 ) Currents
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
6
5
Current(A)
4
3
2
1
0
0
0.1
0.2
0.3
0.4
0.5
Time(S)
0.6
0.7
0.8
0.9
1
Figure 22. Output Current waveform
45
40
35
Voltage(V)
30
25
20
15
10
5
0
0
0.1
0.2
0.3
0.4
0.5
Time(S)
0.6
Figure 23. Output voltage waveform
IJAS [1][1]2014 001-026
0.7
0.8
0.9
1
Chitra.P et al___________________________________________________ ISSN: 2394-9988
4.30625
Current(A)
4.3062
4.30615
4.3061
4.30605
4.306
0.5
0.5005
0.501
0.5015
0.502
0.5025
Time(S)
0.503
0.5035
0.504
0.5045
0.505
Figure 24. Output Current Ripple Waveform
23.0625
23.062
Voltage(V)
23.0615
23.061
23.0605
23.06
0.5
0.5005
0.501
0.5015
0.502
0.5025
Time(S)
0.503
0.5035
Figure 25. Output Voltage Ripple Waveform
IJAS [1][1]2014 001-026
0.504
0.5045
0.505
Voltage(V)
Chitra.P et al___________________________________________________ ISSN: 2394-9988
4
2
Voltage(V)
0
0
0.2
0.4
0.6
0.8
1
Time(S)
1.2
1
Time(S)
1.2
1
Time(S)
1.2
1.4
1.6
1.8
2
x 10
-3
4
2
Voltage(V)
0
0
0.2
0.4
0.6
0.8
1.4
1.6
1.8
2
x 10
-3
4
2
0
0
0.2
0.4
0.6
0.8
1.4
1.6
1.8
2
x 10
-3
Figure 26. Gating Patterns of MOSFETs (M, M1, M2)
Current(A)
15.55
15.5
15.45
0.9035
0.904
0.9045
Current(A)
4.84
4.82
4.8
Current(A)
4.78
0.95
0.9502
0.9504
0.9506
0.9508
0.951
Time(S)
0.9512
0.9514
0.9516
0.9518
0.952
0.9502
0.9504
0.9506
0.9508
0.951
Time(S)
0.9512
0.9514
0.9516
0.9518
0.952
0.9502
0.9504
0.9506
0.9508
0.951
Time(S)
0.9512
0.9514
0.9516
0.9518
0.952
4.86
4.84
4.82
4.8
0.95
Current(A)
0.905
Time(S)
4.86
4.86
4.84
4.82
4.8
0.95
Figure 27. Input Current and Inductors (L, L 1 and L 2 ) Currents
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
14
12
Current(A)
10
8
6
4
2
0
0
0.2
0.4
0.6
0.8
1
Time(S)
1.2
1.4
1.6
1.4
1.6
1.8
2
Figure 28. Output Current
70
60
Voltage(V)
50
40
30
20
10
0
0
0.2
0.4
0.6
0.8
1
Time(S)
1.2
Figure 29. Output Voltage
IJAS [1][1]2014 001-026
1.8
2
Chitra.P et al___________________________________________________ ISSN: 2394-9988
7.7341
7.734
7.7339
7.7338
Current(A)
7.7337
7.7336
7.7335
7.7334
7.7333
7.7332
7.7331
4.5
4.5005
4.501
4.5015
4.502
4.5025
Time(S)
4.503
4.5035
4.504
4.5045
4.505
4.9935
4.994
4.9945
4.995
Figure 30. Current Ripple Waveform
38.6705
38.67
38.6695
38.669
Voltage(V)
38.6685
38.668
38.6675
38.667
38.6665
38.666
38.6655
4.99
4.9905
4.991
4.9915
4.992
4.9925
Time(S)
4.993
Figure 31. Voltage Ripple Waveform
IJAS [1][1]2014 001-026
Voltage(V)
Chitra.P et al___________________________________________________ ISSN: 2394-9988
4
2
Voltage(V)
0
0.2
0.4
0.6
0.8
1
Time(S)
1.2
1
Time(S)
1.2
1
Time(S)
1.2
1.4
1.6
1.8
2
x 10
-3
4
2
0
Voltage(V)
0
0
0.2
0.4
0.6
0.8
1.4
1.6
1.8
2
x 10
-3
4
2
0
0
0.2
0.4
0.6
0.8
1.4
1.6
1.8
2
x 10
-3
Figure 32. Gating Patterns of MOSFTs (M, M1, M2)
15.94
15.92
9.38
9.3805
9.381
9.3815
Time(S)
9.382
9.3825
9.383
5.33
5.32
5.31
5.3
5.29
9.38
9.3805
9.381
9.3815
Time(S)
9.382
9.3825
9.383
5.33
5.32
5.31
5.3
5.29
9.38
9.3805
9.381
9.3815
Time(S)
9.382
9.3825
9.383
9.3805
9.381
9.3815
Time(S)
9.382
9.3825
9.383
Current(A)
Current(A)
Current(A)
Current(A)
15.96
5.32
5.3
9.38
Figure 33. Input Current and Inductors (L, L 1 and L 2 ) Currents
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
20
18
16
Current(A)
14
12
10
8
6
4
2
0
0
1
2
3
4
5
Time(S)
6
7
8
9
10
7
8
9
10
Figure 34. Output Current
120
100
Voltage(V)
80
60
40
20
0
0
1
2
3
4
5
Time(S)
6
Figure 35. Output Voltage
IJAS [1][1]2014 001-026
Chitra.P et al___________________________________________________ ISSN: 2394-9988
14.6596
14.6595
14.6594
Voltage(V)
14.6593
14.6592
14.6591
14.659
14.6589
14.6588
14.6587
9.65
9.651
9.652
9.653
Time(S)
9.654
9.655
9.656
Figure 36. Current Ripple Waveform
73.298
73.2975
73.297
Voltage(V)
73.2965
73.296
73.2955
73.295
73.2945
73.294
73.2935
9.95
9.951
9.952
9.953
9.954
Time(S)
Figure 37. Voltage Ripple Waveform
IJAS [1][1]2014 001-026
9.955
9.956
9.957