Photovoltaic System with SEPIC Converter Controlled by the Fuzzy Logic

International Journal of Power Electronics and Drive System (IJPEDS)
Vol. 7, No. 4, December 2016, pp. 1283~1293
ISSN: 2088-8694, DOI: 10.11591/ijpeds.v7i4.pp1283-1293  1283
Journal homepage: http://iaesjournal.com/online/index.php/IJPEDS
Photovoltaic System with SEPIC Converter Controlled by the
Fuzzy Logic
Meryem Oudda, Abdeldjebar Hazzab
Department of Science and Technology, Université TAHRI Mohamed Bechar, Algeria
Article Info ABSTRACT
Article history:
Received Apr 13, 2016
Revised Nov 18, 2016
Accepted Nov 30, 2016
In this work, a fuzzy logic controller is used to control the output voltage of a
photovoltaic system with a DC-DC converter; type Single Ended Primary
Inductor Converter (SEPIC). The system is designed for 210 W solar
photovoltaic (SCHOTT 210) panel and to feed an average demand of 78 W.
This system includes solar panels, SEPIC converter and fuzzy logic
controller. The SEPIC converter provides a constant DC bus voltage and its
duty cycle controlled by the fuzzy logic controller which is needed to
improve PV panel’s utilization efficiency. A fuzzy logic controller (FLC) is
also used to generate the PWM signal for the SEPIC converter.
Keyword:
DC-DC converter
Duty cycle
Fuzzy logic controller (FLC)
Photovoltaic System (PV)
Single ended primary inductor-
converter (SEPIC)
Copyright © 2016 Institute of Advanced Engineering and Science.
All rights reserved.
Corresponding Author:
Oudda Meryem,
Department of Electrical and Computer Engineering,
TAHRI Mohamed University,
0800 University of Bechar, Bechar, Algeria.
Email: ouddameryem@gmail.com
1. INTRODUCTION
The non-renewable source of energy is depleting rapidly and the demand for power is increasing
day by day. To overcome this problem, generation of electric power from renewable source of energy should
be made effective and efficient [1]. The energy source which the society can depend on is renewable energy
since it is clean, pollution free, and endless. Photovoltaic (PV) system is one of power generations that utilize
renewable energy [2]. To reduce consumption of conventional energy, then the PV system must be connected
to grid, either directly or through back-up battery bank. However, the PV system has low efficiency because
of the power generated from PV systems depends on the irradiation and temperature variation [2].
For the control of the PV systems, there are various types of DC-DC converters such as, Buck
converter, Boost converter and Buck-Boost converter. The output of buck converter is less than the input
voltage whereas the boost converter output is greater than the input voltage. The polarity of buck-boost
converter is inversed of input signal. F. Yusivar et al 2011 have been proposed Buck-Converter Photovoltaic
Simulator [3]. Where as Single Ended Primary Inductor Converter (SEPIC) is a special type of DC-DC
converter which maintains a constant output voltage even under varying input conditions and load
conditions [4].
From the literature survey it can be understood that SEPIC is widely used converter topology in
renewable source based energy generation. S. Venkatanarayanan et al; January 2014 are presented
photovoltaic energy system with SEPIC converter [5]. The SEPIC converter is proposed also by Ahmad H.
El Khateb et al 2012 [6]. Another recent search (G.Thambi et al 2015) [7], a SEPIC converter for a
standalone PV system is chosen. SEPIC converter also overcomes the drawback of buck-boost converter.
The performance of SEPIC converter can further be improved by using a suitable control scheme [2].

IJPEDS ISSN: 2088-8694 
Photovoltaic System with SEPIC Converter Controlled by the Fuzzy Logic (Meryem Oudda)
1284
The control of this SEPIC converter is a much discussed and invested very subject. Indeed, this
converter is nonlinear in nature and different approaches have been used to control it. Conventional control
modes such as voltage mode control and current mode control require a good knowledge of the converter and
therefore a fairly accurate model [1]. Proportional-integral Control for SEPIC Converter is presented by S.
Venkatanarayanan et al 2014 [8], Current mode control and PI Controller have been proposed by Tadi G L
Krishna Reddy et al 2013 [9].
These controllers are easy to implement and simple to design, but their performance generally
depends on the operating point so that too large disturbance, wide load variation ranges or supply voltage
variations can make the choice of the parameters very difficult for different operating conditions.
However, a very different approach is offered by the fuzzy logic control (FLC), which does not
require precise mathematical model or complex calculation [10]. The fuzzy control technique is based
primarily on human understanding of the process control and on qualitative rules. The objective of this
research is to develop a fuzzy voltage regulator for a SEPIC converter. This paper is organized as follows. In
section 2, the photovoltaic array model is presented. Section 3 presents the SEPIC converter, while the design
of the fuzzy logic controller for the SEPIC converter has been done in section 4. Simulation results are shown
in section 5. Finally conclusion is given in section 6.
2. PHOTOVOLTAIC ARRAY MODEL
Photovoltaic is the field of technology and research related to the devices which directly convert
sunlight into electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic cells convert
solar radiation directly into DC electrical energy [11]. The photovoltaic panel is composed of many cells,
placed in series Ns or in shunt Nsh. Where it can be modelled by current source connected in parallel with
diode according with shunt and series resistor noted by and as illustrated in Figure 1 [12].
The output current is given by the following equations:
(1)
* ( ) + (2)
: Photo-current : Ideality factor
: Boltzmann’s constant : Cell temperature
: Diode current Series resistance
: Saturation current : Electronic charge
: Shunt resistance : Cell voltage
: Cell current
Figure 1. Photovoltaic array circuit
Typically, the shunt resistance ( ) is very large and the series resistance ( ) is very small [13].
Therefore, it is common to neglect these resistances in order to simplify the solar cell model. The resultant
ideal voltage-current characteristic of a photovoltaic cell is given by equation (3).
[ ( )
] (3)

 ISSN: 2088-8694
IJPEDS Vol. 7, No. 4, December 2016 : 1283 – 1293
1285
Figure 2 and Figure 3 show the behavior of a photovoltaic module simulation in accordance to solar
radiation variation and at a constant temperature.
Figure 2. I–V curves of solar PV module used in this
study under different solar irradiance and constant
temperature 25°C
Figure 3. P–V curves of solar PV module used in this
study under different solar irradiance and constant
temperature 25°C
As we can see in the curve of the Figure above (Figure 2), the current increase is highly affected by
the solar radiation.
3. DC-DC/SEPIC CONVERTER
A DC-DC converter with simpler structure and higher efficiency has been an active research topic in
the power electronics [14]. The proposed converter is based on DC to DC converter to maintain the constant
output voltage [1]. Single Ended Primary Inductor Converter (SEPIC) converter consists of a switch S with
duty cycle , a diode, two inductors L1 and L2, two capacitors C1 and C2 and a load resistor. The circuit
diagram of a SEPIC converter is shown in Figure 4.
A SEPIC is a type of DC-DC converter [15]; allowing the electrical potential (voltage) at its output
to be less than, greater than, or equal to that at its input; the output of the SEPIC is controlled by the duty
cycle of the control transistor. SEPIC is effectively a boost converter followed by a buck-boost converter,
consequently it is like to a conventional buck-boost converter, other than has advantages of having
non-inverted output (the output has the same voltage polarity as the input), passing through a series capacitor
to couple energy from the input to the output (and thus can respond more gracefully to a short-circuit output),
and being able of factual shutdown: after the switch “S” is turned off, its output drops to 0 V, following a
rather hefty transient abandon of charge [16]. Figure 4 shows a simple circuit diagram of a SEPIC converter
can both step up and step down the input voltage, while maintaining the same polarity and the same ground
reference for the input and output.
Figure 4. Simple circuit diagram of the SEPIC converter
1000 W/m2
900 W/m2
800 W/m2
700 W/m2
1000
W/m2
900 W/m2
800 W/m2
700 W/m2
S

1286
Figure 5 shows the circuit when the power switch is turned on and off (respectively in
Figures a and b). Figure 5a When the switch is turned on; the first inductor; is charged from the input
voltage source during this time. The second inductor takes energy from the first capacitor , and the output
capacitor is left to provide the load current.
Figure 5.a. On state (switch is on) Figure 5.b. Off state (switch is off)
Figure 5. Equivalent circuit diagram of the SEPIC converter when the switch is ON and OFF
When the switch is turned on, the input inductor is charged from the source, and the second inductor
is charged from the first capacitor. No energy is supplied to the load capacitor during this time. Inductor
current and capacitor voltage polarities are marked in this Figure. When the power switch is turned off, the
energy stored in inductor is transferred to .The energy stored in is transferred to through the diode
and supplying the energy to load [9], as shown in Figure 5.b. The second inductor is also connected to the
load during this time. The output capacitor sees a pulse of current during the off time, making it inherently
noisier than a buck converter. The amount that the SEPIC converters increase or decrease the voltage depends
primarily on the duty cycle and the parasitic elements in the circuit.
The output of an ideal SEPIC converter is:
(4)
A SEPIC converter is to process the electricity from the PV system. This converter either increases
or decreases the PV system voltage at the load. The proposed SEPIC converter operates in buck mode.
4. THE FUZZY LOGIC CONTROLLER FOR THE SEPIC CONVERTER
In fuzzy logic controller (FLC) design, one should identify the main control variables and determine
the sets that describe the values of each linguistic variable. The input variables of the FLC are the output
voltage error ( ) and the change of this error ( ) of the SEPIC converter. The output of the FLC is
the duty cycle of ( ) of the PWM signal, which regulates the output voltage. The triangular membership
functions are used for the FLC for easier computation. A five-term fuzzy set, i.e., negative big (NB), negative
small (NS), zero (Z), Positive small (PS), and positive big (PB), is defined to describe each linguistic
variable. The fuzzy rules of the proposed SEPIC DC-DC converter can be represented in a symmetric form
(table 1).For the output variable ( ), five-term fuzzy is defined to give sharpness to the regulation: negative
big (NB), negative small (NS), zero (Z), Positive small (PS) and positive big (PB). The variables of the FLC
for the SEPIC converter are as follow:
The first input is the error in the output voltage ( )
) ) (5)
The second input is the variation (the change) in error ( )
) ) ) (6)
The single output variable ( ) is duty cycle.
Where
a. : is the reference output voltage;
b. ) is the measured output voltage in the Kth
sample;

 ISSN: 2088-8694
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The Block diagram of the control SEPIC converter with the Fuzzy Logic controller is presented in
Figure 6, where ) is sent to the PWM generator. PWM generator generates the necessary switching signal
for the switch in the converter.
a. is the control gain of input ;
b. is the control gain of input );
c. is the control gain of output. .
Figure 6. Block diagram of Fuzzy Logic controller for the SEPIC converter
The membership functions and for and respectively are represented in
Figure 7a. The membership function for the output variable is represented in Figure 7.b. All the functions
are defined on a normalized interval [ ]. The rules of the fuzzy logic controller are shown in Table 1.
Figure 7a. Membership functions for
and
Figure 7b. Membership function for
Figure 7. Membership functions for the input and output variables
𝐊 𝛂
SEPIC
Converter
𝐞𝐕𝐨𝐮𝐭
𝐊 𝐞𝐕 𝐨𝐮𝐭
𝐕𝐑𝐞𝐟
𝐊 𝐞𝐕 𝐨𝐮𝐭
𝐞𝐕𝐨𝐮𝐭
𝐕𝐨𝐮𝐭
𝟏
𝒁
𝛂
Fuzzy Logic
Controller
FLC
PWM
Pulse Generator
𝛂
𝛍 𝐞𝐕 𝐨𝐮𝐭
𝛍 𝐞𝐕 𝐨𝐮𝐭
𝐞𝐕𝐨𝐮𝐭 𝐞𝐕𝐨𝐮𝐭
-1.0-0.5 0.0 0.5 1.0
NB NS Z PS PB
𝛍 𝛂
-1.0-0.5 0.0 0.5 1.0
NB NS Z PS PB
𝛂

1288
Table 1. Fuzzy control rules
NB NS Z PS PB
NB NB NB NB NS Z
NS NB NB NS Z PB
Z NB NS Z PS PB
PS NS Z PS PB PB
PB Z PS PB PB PB
Fuzzy control rules are derived from the analysis of the converter behavior:
a. When the output of the converter is far from the set point (Positive Big or Negative Big), the duty
cycle should be close to zero or one so as to bring to the set point quickly.
b. When the output of the converter is approaching to the set point (Negative Small or Positive Small),
a small change of the duty cycle is necessary.
c. When the output of the converter is approaching very close to the set point, duty cycle must be kept
constant in order to prevent the overshoot.
5. SIMULATION RESULTS
The photovoltaic array that we use in this paper is SCHOTT Solar (SCHOTT POLYTM
210); the
characteristics of this array are given in Table 2.
Table 2. Electrical data apply to standard test conditions (STC): (T=25°C, G=1000 W/m2
)
Variable Value
Maximum Power Pmax= 210 W
Open circuit voltage Voc = 36.1 V
Short circuit current Isc = 7.95 A
Voltage at maximum power Vmax = 29.3 V
Current at maximum power Imax = 7.16 A
Figure 8 and Figure 9 show the simulation result of the PV model.
Figure 8. Current-Voltage characteristic Figure 9. Current-Power characteristic
The parameters of the SEPIC converter used in this study are given in Table 3. In the full model; the
SEPIC converter is connected to the PV panel, and the duty cycle of this is controlled using the Fuzzy Logic
Controller. The results are provided under standard test conditions; G=1000 W/m2
and T=25°C. Figure 10
shows the simulation results obtained from the model; Vout=24V; Iout=3.25A and Power= 78 W. According
this Figure (Figure 10) we notice that since the time 0.1S the model gave a stable voltage (24 V), and thus a
current and a power so stable. To prove the efficiency of the integration of SEPIC converter controlled by the
fuzzy logic controller for the photovoltaic system, we have studying the influence of the temperature and the
solar irradiation separately.

 ISSN: 2088-8694
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Table 3. The simulation parameters of SEPIC converter
Variable Value
Switching frequency 20 KHz
Input Voltage (Vin) Vin = 29.3 V
Output Voltage (Vout) Vout = 24 V
Load resistance Rload = 7.38 Ω
Inductance L1 L1 = 460 µH
Inductance L2 L2 = 460 µH
Capacitor C1 C1 =8.4 µF
Capacitor C2 C2 = 0.0163 F
Figure 10. Voltage, current and power output results; at G=1000 W/m2
and T=25°C
5.1. Influence of Temperature
For stable irradiation (G=1000 W/m2
), and for a variable temperature, we obtain the results shown
in the Figures.
and T=35°C
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]

1290
Figure 12.Voltage, current and power output results; at G=1000 W/m2
and T=45°C
and T=55°C
From this three Figures above (Figure 11, Figure 12, and Figure 13) it is clear that for a variable
temperature value, we obtain the desired voltage (24 V), and it is so stable since 0.1S.
5.2. Influence of Irradiation
For stable temperature (T=25°C), and for a variable solar irradiation, we obtain the results shown in
the Figures. Figures Figure 14, Figure 15 and Figure 16 shows the simulation results obtained from the model
(T=25°C); for G=900W/m2
, G=800W/m2
and G=700W/m2
respectively. From the Figures 14, 15 and 16; it is
notable that the output voltage is 24 V, even if there are a variation in the solar irradiance. We summarize
from the results given from the study that the temperature and solar irradiation variations can be addressed by
the FLC controller, and this is observed, and generally the steady state is not exceeding 0.4 s.
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]

 ISSN: 2088-8694
1291
Figure 14. Voltage, current and power output results; at T=25°C and G=900 W/m2
Figure 15. Voltage, current and power output results; atT=25°C and G=800 W/m2
Figure 16. Voltage, current and power output results; atT=25°C and G=700 W/m2
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
20
40
Vout
Curve
t [S]
V
out
[V]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
2
4
Iout
Curve
t [S]
I
out
[A]
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
50
100
Power Curve
t [S]
Power[W]

1292
6. CONCLUSION
The SEPIC performs the voltage conversion from positive source voltage to positive load voltage.
Due to the time variations and switching nature of the power converters, their dynamic behavior becomes
highly non-linear. In this paper; a stand-alone solar-PV energy generation system with a SEPIC; DC-DC
converter controlled by a Fuzzy Logic Controller has been designed and the efficiency of the system has been
presented under variation in temperature and solar irradiation. This study has successfully demonstrated the
design, analysis and suitability of fuzzy logic controller for SEPIC converter.
REFERENCES
[1] Mahendran. G, Kandaswamy. K.V," Ant Colony Optimized Tuned DC-DC Converter", International Journal of
Computer Applications (0975–8887). International Conference on Innovations In Intelligent Instrumentation,
Optimization And Signal Processing “ICIIIOSP-2013”
[2] James Dunia, Bakari M.M. Mwinyiwiwa, "Performance Comparison between ĆUK and SEPIC Converters for
Maximum Power Point Tracking Using Incremental Conductance Technique in Solar Power Applications",
International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering Vol: 7, No:
12, 2013. World Academy of Science, Engineering and Technology
[3] F. Yusivar, M.Y. Farabi, R. Suryadiningrat, W.W. Ananduta, and Y. Syaifudin, "Buck-Converter Photovoltaic
Simulator", International Journal of Power Electronics and Drive System Vol. 1, No. 2, December 2011, pp.
156~167.
[4] Sweta Srivastav, Sanjay Singh., "An Introduction To Sepic Converters", International Referred Research Journal,
July, 2011.ISSN-0975-3486, RNI: RAJBIL 2009/30097 VOL-II*ISSUE 22.
[5] S. Venkatanarayanan, M. Saravanan, "Fuzzy logic based PV energy system with SEPIC converter ", Journal of
Theoretical and Applied Information Technology Vol. 59, No. 1, 10th
January 2014.
[6] Ahmad H. El Khateb, NasrudinAbd Rahim, Jeyraj Selvaraj, "Fuzzy logic control approach of a maximum power
point.
[7] G. Thambi, S. Prem Kumar, Y.Murali Krishna, M. Aruna, "Fuzzy-Logic-Controller-Based SEPIC Converter for
MPPT in Standalone PV systems "International Research Journal of Engineering and Technology Vol: 02 Issue:
02, May-2015.
[8] S. Venkatanarayanan, M. Saravanan, "Proportional-integral Control for SEPIC Converter", Research Journal of
Applied Sciences, Engineering and Technology 8(5): 623-629, 2014.
[9] Tadi G L Krishna Reddy, Ramamurthyraju. P, Revanthkumar.V, "Analysis of SEPIC for PV-Applications using PI
Controller and Current Mode Control", International Journal for Scientific Research & Development Vol. 1, Issue
9, 2013.
[10] Kung. Y.S; Liaw. C.M, "A Fuzzy Controller improving a Linear Model Following Controller for Motor Drives",
IEEE Transactions on Fuzzy Systems VOL: 2, ISSUE 3, pages: 194-201, 1994.
[11] M. Abdulkadir, A.S. Samosir, A.H.M. Yatim, "Modeling and Simulation of a Solar Photovoltaic System, Its
Dynamics and Transient Characteristics in LABVIEW", International Journal of Power Electronics and Drive
System (IJPEDS), Vol. 3, No. 2, June 2013, pp. 185~192.
[12] H. Bouzeria, C. Fetha, T. Bahi, I. Abadlia, Z. Layate, S. Lekhchine," Fuzzy Logic Space Vector Direct Torque
Control of PMSM for Photovoltaic Water Pumping System", Energy Procedia 74 (2015) 760 – 771.
[13] Y.M. Chen, Y.C. Liu, S.C. Hung, and C.S. Cheng, " Multi-Input Inverter for Grid-Connected Hybrid PV/Wind
Power System", IEEE Transactions on Power Electronics Vol: 22, ISSUE 3, May 2007.
[14] S. Ganesh, J. Janani, G. Besliya Angel, "A Maximum Power Point Tracker for PV Panels Using SEPIC Converter",
International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering Vol: 8, No:
2, 2014. World Academy of Science, Engineering and Technology.
[15] Vijayabalan R, S. Ravivarman, "Z Source Inverter for Photovoltaic System with Fuzzy Logic Controller",
International Journal of Power Electronics and Drive System (IJPEDS), International Journal of Power
Electronics and Drive System (IJPEDS), Vol. 2, No. 4, December 2012, pp. 371~379.
[16] A. Ramkumar, S. Vijula Shini Florence, "Analysis of Single Phase AC-DC SEPIC Converter using Closed Loop
Techniques", International Journal of Advanced Research in Electrical, Electronics and Instrumentation
Engineering Vol. 4, Issue 2, February 2015.
BIOGRAPHIES OF AUTHORS
Meryem Oudda received her LSc and MSc degrees in electrical engineering from TAHRI
Mohamed Bechar University, Algeria, in 2009 and 2011 respectively, where she has been
working toward the doctoral degree in the Department of Electric and Electronics Engineering
since January 2012. She is currently a research member at the research laboratory: Command
Analyses and Optimization of Electro-Energetic Systems, TAHRI Mohamed Bechar University,
Algeria.

 ISSN: 2088-8694
1293
Hazzab Abdeldjebar received his State Engineer, M.S., and Ph.D degrees in Electrical
Engineering from the Electrical Engineering Institute of The University of Sciences and
Technology of Oran (USTO), Algeria in 1995, 1999, and 2006, respectively. He is currently a
Professor of Electrical Engineering at the University of Bechar (Algeria), where he has been the
Director of the Research Laboratory of Command, Analyses, and Optimization of Electro-
Energetic Systems since 2009. His research interests include power quality, modeling, modern
controller and observer design for nonlinear systems, control of power electronics, multidrive
systems and electrical vehicle, and adaptive control and nonlinear systems diagnostic.

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