Dr Zeljko V Despotovic- PhD.E.E, Full Research Professor
- President of Scientific Council at Institut Mihajlo Pupin
Dr Zeljko V Despotovic
- PhD.E.E, Full Research Professor
- President of Scientific Council at Institut Mihajlo Pupin
R&D of power converter topologies for efficient conversion vibratory to electrical energy(vibratory energy harvesting)
About
695
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Introduction
Zeljko V.Despotovic was born in Prijepolje, Serbia in 1964. He finished primary school and high school in Nova Varos, 1979 and 1983, respectively. He received the B.Sc., M.Sc. and Ph.D. degrees in School of Electrical Engineering (Department of Power Converters and Drives), from the University of Belgrade, Serbia and Montenegro, 1990, 2003 and 2007, respectively. He has been with the Department of Mechatronics, Mihajlo Pupin Institute, Belgrade, since 1991. His research interests include the fields of power electronics, mechatronics, control of power converters, vibration control and control of vibratory conveying systems.
EDUCATIONAL DEGREES:
Undergraduate Study
April 1990: received Bachelor of Science degree in School of Electrical Engineering (Chair of Power Converters and Drives), University of Belgrade, specializing in Power Converter Control, B.Sc. title-“Comparative Synopsis Characteristics of Darlington BJT and IGBT as Power Current Switches in Voltage Source Inverters”, supervisor- Prof. Zoran Stojiljkovic.
Graduate Study
December 2003: received Master of Science degree in School of Electrical Engineering (Chair of Power Converters and Drives), University of Belgrade, specializing in Power Converter Control and Mechatronics, M.Sc. thesis title – “Power Converters for Electromagnetic Vibratory Feeder Drive in Systems for Dosing and Conveyance of Granular Materials”, supervisor- Prof. Zoran Stojiljkovic.
Ph.D. Study
November 2007: received the Ph.D. degree in School of Electrical Engineering (Chair of Power Converters and Drives), University of Belgrade. Ph.D. thesis title –″The Performance Optimisation of Resonant Electromagnetic Vibratory Conveyors Using Current Controlled Transistor Power Converters, supervisors- Prof. Zoran Stojiljkovic, Prof.Slobodan Vukosavic.
PROFESSIONAL EXPERIENCE:
September 1990 to present: Industrial Electronics and Power Electronics Engineer and Research Scientist in the Mechatronics Department, Mihajlo Pupin Institute, Belgrade, currently at the positions of Ph.D., E.E-scientific fellow and Research and Development Engineer of Power Electronics.
He is an associate fellow of Laboratory for Digital Control of Power Converter and Drives-School of Electrical Engineering, University of Belgrade, Serbia.
He is professor at the High School of Professional Studies in Electrical Engineering and Computer Science - Belgrade, Serbia, since February 2010.
The working experience includes research in the following areas:
•14 years of experience in industrial control, mechatronics, robotics and servo drive (DC, AC, Brush-less) systems
•14 years experience in power converters design
•10 years of experience in power electronics computer simulation
•10 year of experience in design power AC motor drive
•6 years of experience in control of vibratory conveying systems and vibratory feeder drives
•5 years of experience in hydraulics control and hydrodynamics power transmission
•5 years of experience in embedded motion controller
•5 years of experience in development and control of electrostatic precipitators
•PLC design
•Experience with PC and PC104 systems
•Digital/analogy hardware design experience
•Familiar interfaces I2C, RS232, RS422-485, CANBUS, PROFIBUS
•Comfortable with Windows based tools
•Proficiency in hardware/software design tools: Or CAD, TANGO, ACCEL, PSPICE, MSIM Design Centre and MATLAB.
Current institution
Additional affiliations
February 2010 - present
Academy of Technical and Art Applied Studies
Position
- Professor
Description
- Teaching on the courses: Electrical Power Converter, Control of Power Converter, Design of Power Converter, Conterporary methods of Electrostatic Precipitation of Air in Industry
June 2019 - January 2025
Position
- Professor
Description
- Full research professor at PhD academic studies Teaching on the courses: Power Converters-DS1EP, Control of Power Converters-DS1UEP
June 2019 - present
Education
May 2009
Serbian Chamber of Engineers
Field of study
- Graduate Engineer's Licence-responsible designer of electrical drive control - automatic, measuring and regulation
May 2009
Serbian Chamber of Engineers
Field of study
- Graduate Engineer's Licence-responsible designer of low and medium voltage power system
April 2009
Association of Mechanical and Electric Engineers and Technicians of Serbia
Field of study
- Specialization
Publications
Publications (695)
The PPT presents a system for testing the magneto-electrical properties of flexible composite films based on barium calcium zirconium titanate (BCZT) and cobalt ferrite (CF) particles incorporate into a polyvinylidene difluoride (PVDF) i.e. (BCZT-CF/PVDF) in the next time so called COMPOSITE FILMS.
BCZT-CF/PVDF are MULTIFERROIC materials; Multifer...
Introduction: What is the main idea behind the research?
• What is vibratory conveying? Where is it used?
• Technical description of a vibratory conveyor
› CAD Modelling: What methods were being used?
• Solidworks + EMWorks simulation software
• FEA Simulation of the actuator
› Results: What did this research accomplish?
• 3D image of electromagnet...
The paper presents the modernization and realization of a system for testing special-purpose compressor motors based on the application of frequency controlled of the induction motor drive. According to the technical requirements, setting and maintaining the speed of the compressor is provided using frequency control in the ranges 0 -500 - 1000 - 1...
U radu je prikazana jedna moguća realizacija sistema
solarni panel-Ćukov DC/DC energetski pretvarač sa
implementacijom algoritma praćenja tačke maksimalne snage
solarnog panela. Solarni panel se odlikuje izrazito nelinearnom IU karakteristikom, dok se Ćukov DC/DC energetski pretvarač
odlikuje širokim opsegom promene ulaznog napona. Iz ovih
razloga...
The paper presents one possible realisation of the solar panel-Ćuk DC/DC power converter system with the implementation of the algorithm for the maximum power point tracking (MPPT) of the solar panel. The solar panel is characterized by a highly nonlinear I-U characteristic, while Ćuk's DC/DC power converter is characterized by a wide range of inpu...
Struja curenja u fotonaponskim (FN) sistemima, koja je takođe poznata kao rezidualna struja ili „leakage current“ (engl.) je posledica parazitnog kapaciteta između FN sistema i zemlje (FN elektrane na tlu) ili FN sistema i konstrukcije objekta koji je uzemljen (FN elektrane na krovu objekta). Kada parazitna kapacitivnost između FN sistema i elektro...
During a vibrational transport of a rigid body on a vibratory conveyor having electromagnetic vibratory actuator, a rigid body exerts by equal, but opposite force to a surface’s reaction force. This paper covers research on a reactive force that the body exerts on the EVA during its relative motion. The reactive force is a vector sum of the surface...
The paper presents the realization of a hybrid and uninterruptible power system (HUPS) based on renewable energy sources (solar and wind) which is used for irrigation of vegetable crops on the "smart land" at the location of the village "Belegiš". Within the power system are realized the solar power plant with an output power of 8 kW, the wind gene...
The aim of this paper is to present the sustainable and automated process of growing any kind of seedling using the collaborative robot UR5 without human involvement. The automation process is presented within one work cell where the robot, using additional devices, performs all the necessary steps of plant care and cultivation, following the cycle...
U prezentaciji su dati ključni rezultati projektovanja, realizacije i puštanja u rad fotonaponske (FN) elektrane izlazne snage 400kW na krovu fabrike "EP Belt" d.o.o u Loznici.
› Osnovna delatnost kompanije "EP Belt" je proizvodnja tehničkih tkanina na bazi POLYESTERA i
POLIAMIDA. Proizvodi, odnosno tehničke tkanine nalaze primenu u gumarskoj indus...
U radu su dati ključni rezultati projektovanja, realizacije i puštanja u rad fotonaponske (FN) elektrane izlazne snage 400kW na krovu fabrike "EP Belt" d.o.o u Loznici. Osnovna delatnost kompanije "EP Belt" je proizvodnja tehničkih tkanina na bazi POLYESTERA i POLIAMIDA. Proizvodi, odnosno tehničke tkanine nalaze primenu u gumarskoj industriji za p...
U prezentaciji je dat primer procene uticaja fotonaponske (FN) krovne elektrane izlazne snage 1.5MW na srednjenaponsku elektroenergetsku mrežu (EEM). Reč je o krovnoj FN elektrani fabrike „FLASH“ Calcedonia-Apatin. Procena uticaja je izvršena na osnovu dispozicije postojeće transformatorske stanice i napojnih vodova koji povezuju fabriku sa EEM i p...
U radu je dat primer procene uticaja fotonaponske (FN) krovne elektrane izlazne snage 1.5MW na srednjenaponsku elektroenergetsku mrežu (EEM). Reč je o krovnoj FN elektrani fabrike "FLASH" Calcedonia-Apatin. Procena uticaja je izvršena na osnovu dispozicije postojeće transformatorske stanice i napojnih vodova koji povezuju fabriku sa EEM i po nekoli...
On October 12, 2024, a new lightning protection installation was installed on the roof of the Mihailo Pupin Institute. The installation is based on the ERICO 1000 system with a very low inductance and low impedance of down conductor ERICORE 50mm2. After a detailed risk assessment and based on the value of the equipment on the roof of the Institute...
U radu su prikazani projektovanje i realizacija fotonaponske elektrane izlazne snage 1500 kW na krovu hale fabrike "Flash" u Apatinu. Solarna elektrana je povezana na NN sabirnice u transformatorskoj stanici 20/0.4 kV 1600 kVA i preko njih napaja potrošače fabrike. U periodima kada nema dovoljno sunčeve insolacije napajanje potrošača u fabrici se o...
In this study, we performed cation substitutions at Bi-site (La3+) and Fe-site (Zr4+) to investigate their possible
benefit for the ferroelectric properties of BiFeO3 ceramics. The cations with higher valence (Zr4+) ought to suppress the formation of structural defects during syntheses, such as oxygen vacancies and Fe2+. These defects are
responsib...
•(1)Porast broja stanovništva na Zemlji, uticaj klimatskih promena, sve veće industrijsko i komunalno zagađenje sa jedne strane i razvoj naučno-tehnoloških dostignuća sa druge strane, određuju dinamiku razvoja primene naprednih tehnologija u raznim oblastima kao što su ekologija, poljoprivreda, održivi razvoj i sl.;
• (2)Rast svetske populacije, a...
U prezentaciji je prikazana jedna moguća realizacija sistema solarni panel-Ćukov DC/DC energetski pretvarač sa implementacijom algoritma praćenja tačke maksimalne snage solarnog panela. Solarni panel se odlikuje izrazito nelinearnom I-U karakteristikom, dok se Ćukov DC/DC energetski pretvarač odlikuje širokim opsegom promene ulaznog napona i „mirno...
Realizacija sistema za ispitivanje kompresorskih motora specijalne namene baziranog na primeni frekventno regulisanog elektromotornog pogona
Elektromagnetni vibracioni aktuatori se koriste u industrijskim vibracionim transporterima kao pogonski element. Vibracioni transporter predstavlja jedan oscilatorni sistem koji se koristi za transport sitnozrnih i rasutih materijala. Njegova primena je u procesnim industrijama u kojima se vrši transport ovih materijala (prehrambena, farmaceutska,...
Struja curenja u fotonaponskim (FN) sistemima, koja je takođe poznata kao rezidualna struja ili „leakage current“ (engl.) je posledica parazitnog kapaciteta između FN sistema i zemlje (FN elektrane na tlu) ili FN sistema i konstrukcije objekta koji je uzemljen (FN elektrane na krovu objekta). Kada parazitna kapacitivnost između FN sistema i elektro...
U prezentaciji su prikazani rezultati projektovanjq i realizacije fotonaponske elektrane izlazne snage 1500kW na krovu hale fabrike tekstila „Flash“ u Apatinu.
Solarna elektrana je povezana na NN sabirnice u transformatorskoj stanici 20/0.4 kV 2x1600 kVA i preko njih napaja potrošače fabrike.
U periodima kada nema dovoljno sunčeve insolacije napa...
Predavanja KEE-VISER 2014_2015
KEE VISER 2014-2015 Specijalisticke studije
Sažetak-U radu je dat pregled trenutnog statusa primene srednjenaponskih (SN) i visokonaponskih (VN) topologija energetskih pretvarača i pripadajućih prekidačkih elemenata. Oblast energetske elektronike srednjih i visokih napona je već postala jedan od ključnih aktera u predstojećim tehničkim izazovima koje nameću pametne mreže, tzv. "smart grid",...
Electricity consumption in production facilities and power quality control have become key indicators not only of good technical management of industrial facilities and business economics, but also an important aspect of the application of Environmental, Social and Governance (ESG) sustainability measures.
In the resentation, a relatively inexpens...
Oblast energetske elektronike (EE) srednjih i visokih napona je već postala jedan od ključnih aktera u sadašnjim ali i predstojećim tehničkim izazovima koje nameću sistemi fleksibilnog i kontrolisanog prenosa snaga (P,Q), mreže sa OIE, pametne mreže, tzv. „smart grid“ i sl.
Svaki od ovih sistema nameće zahteve kao što su MAX propusnost snage, opti...
Ferroelectric thin films based on the polymer material polyvinylidene fluoride (PVDF) can potentially have a wide range of applications, due to the strong connection between their electrical, mechanical and thermal properties.
PVDF thin films can be applied in memory devices. The most widespread application of these elements is in piezoelectric se...
The main topic of this paper is the impact of LED lighting on the power quality, as well as the analysis of the most suitable methods for improving that quality. LED lighting with accompanying power electronics modules, regardless of individual LED lamps of relatively low power, is becoming an increasingly significant consumer of power, especially...
The paper presents an examination of the quality of electricity in a meat processing plant, and the emphasis is placed on the consumption of reactive energy. The excessive consumption of reactive energy in the 20/0.4kV substation, with a power of 2x630kVA, which amounted to more than 33% of the total power, was analyzed. Measurements lasted a maxim...
In this paper authors present a potential platform for dual education in emerging Agriculture 4.0. It is based on sustainable and automated process of seedling production with industrial robot UR5 without workers’ involvement. This platform depicts a single work cell/station where the robot, along with using accompanying
devices and tools, performs...
The paper presents the realization of a photovoltaic power plant with an output power of 1500 kW on the roof of the "Flash" factory hall in Apatin, Serbia. The solar power plant is connected to the LV bus-bars in the 20/0.4 kV 1600 kVA transformer station and supplies the factory's consumers through them. In periods when there is not enough solar i...
The leakage current in photovoltaic (PV) systems, which is also known as residual current is a consequence of the parasitic capacitance between the PV and the ground (free-field PV plants) or the PV system and the structure of the object that is grounded (roof-top PV plants). When the PV system-power grid parasitic capacitance forms a loop, the com...
The paper presents the realization of a hybrid and uninterruptible power supply system based on green or renewable energy sources (solar and wind) which is used for irrigation of vegetable crops on the "smart land" at the location of the town Belegiš, which is located in the immediate vicinity of Belgrade and on the side of the Danube River. Within...
Kratak sadržaj: U radu je predstavljeno praktično realizovano rešenje frekventne regulacije elektromotornog pogona vibracionih sita baziranog na debalansnim vibracionim pobuđivačima. Rad vibracionih sita koja se koriste u industriji sa prosejavanje i odvajanje frakcija materijala različite granulacije je u značajnoj meri određena nagibnim uglom vib...
In order to further improve the performance of 0.94[(Bi 0.5 Na 0.5 )TiO 3 ]‐0.06BaTiO 3 /polyvinylidene fluoride (NBT‐BT/PVDF) flexible composite films prepared by the hot‐pressing method, the effect of surface modification of the NBT‐BT particles on the structure and properties of the films was investigated. Two coupling agents, namely, (3‐aminopr...
The paper presents the realization of the system for consumption monitoring and the system for power quality control in the hall 4 of the company GRUNER Serbian d.o.o. in Vlasotince, Serbia. The motivation for the establishment of the mentioned systems are machine failures within the warranty period for which the machine suppliers refuse to recogni...
The paper provides an analysis of the magnetic field and the attractive electromagnetic force of a powerful electromagnet that is used as part of an electromagnetic separator (EMS) to separate metal parts on conveyor belts for coal delivery. The analysis was done using the finite element method using the FEMM 4.2 software package. For the modelling...
The paper presents the realization of the technical solution of the plant for detection and separation of tramp metal (parts) on conveyor belt No5, for the delivery of coal from the surface mine „Drmno“ (TPP „Kostolac“). The basic elements of the plant are a metal detector and an electromagnetic separator. Each of these elements is mounted on a rob...
The paper refers to the proposal of a solar tracker technical solution that can be used in environments without a constantly available conventional source of electricity, such as power grid. The device is designed to be very easy to transport, assemble and disassemble. The essence of the paper is to present a proposal for a solution that should mee...
The paper presents the results of thermal imaging tests of the low-voltage AC distribution 400V, 50Hz on the string inverters system in the photovoltaic (PV), power plant 500kW, installed on the roof of the "GRUNER" factory in the municipality Vlasotince. Thermal imaging tests were performed in order to detect the so-called "hot spots" within the s...
The paper will present the design and optimization of the layout of the solar panels of a new 800kW photovoltaic power plant mounted on the slopes of the roof of a factory hall. The paper highlights the issue of mounting solar panels in the specific case of a hall roof with several characteristic slopes. Emphasis is placed on respecting the sun's s...
The PPT presents the results of thermal imaging tests of the low-voltage AC
distribution 400V, 50Hz on the string inverters system in the photovoltaic (PV),
power plant 500kW, installed on the roof of the "GRUNER" factory in municipality
Vlasotince.
• Thermal imaging tests were performed in order to detect the so-called "hot spots"
within the strin...
The PPT presents the results of thermal imaging tests of the low-voltage AC
distribution 400V, 50Hz on the string inverters system in the photovoltaic (PV),
power plant 500kW, installed on the roof of the "GRUNER" factory in municipality
Vlasotince.
• Thermal imaging tests were performed in order to detect the so-called "hot spots"
within the strin...
With the growing awareness of global warming and the need for efficient energy conversion, renewable and environmentally friendly energy sources are gaining more and more importance.
• One of the leading sources that can be called "safe" and which is significantly represented is solar energy, which involves the use of photovoltaic (PV) panels.
•...
With the growing awareness of global warming and the need for efficient energy conversion, renewable and environmentally friendly energy sources are gaining more and more importance. One of the leading sources that can be called "safe" and which is significantly represented is solar energy, which involves the use of photovoltaic (PV) panels. Such s...
The PPT presents the design and realization of a roof-top 400kW PV power plant installed at the "EP Belt" factory hall in Loznica city.The PV power plant is connected to the power grid 400V, 50Hz. The primary purpose of the PV power plant is to supply the consumers of the factory, and in case of production of excess electricity, it is transferred t...
Correct designing of the power plant,
Less than 3% influence of the shadow,
By comparing the factory's own consumption and the production of the solar power plant, it can be concluded that the majority of the energy will be used for the facility's own needs,
The work demonstrates that in the design process, in addition to external factors that affe...
The paper presents a possible solution for optimizing the distribution of PV strings on a rooftop solar power plant with an output power of 400 kW, taking into account meteorological data and the influence of shadows due to slope of parts of the roof structure. In particular, the paper examines the influence of the slope of the roof on the producti...
The paper presents the design and realization of a roof-top 400kW PV power plant installed at the "EP Belt" factory hall in Loznica city. The PV power plant is connected to the power grid 400V, 50Hz. The primary purpose of the PV power plant is to supply the consumers of the factory, and in case of production of excess electricity, it is transferre...
This paper surveys the main challenges regarding the PFC totem pole digital control design and implementations, mainly addressing the problems related to
the voltage controller design and handling of the zero-crossing point of the ac voltage. For a dual control loop totem pole PFC, analysis and design of the inner and outer control loop is given in...
The paper presents the implementation of remote monitoring and control of a hybrid power plant for irrigation of crops on a private agricultural plot of about 10ha in the town of Belegiš. The hybrid irrigation system is based on the dominant use of renewable energy sources (RES), solar and wind, with the use of a strong 48V/1000Ah battery bank and...
In this paper, verification of the efficiency increase of the regulated motor drive with Permanent Magnet Synchronous Machine (PMSM) was performed, using a
supercapacitor as an energy storage unit. The supercapacitor is connected to the inverter's DC bus via a three-level DC/DC converter. The supercapacitor is intended to accumulate energy when the...
The PPT presents the implementation of a synchronous “buck“ power converter that is used to energy harvesting from vibrating structures that oscillate in the 1Hz-1kHz range.
• This range is the most common in real cases.
• In addition to the frequency, a very important parameter is also the amplitude of the vibrations.
• Usually, low frequencies (<...
This resarch surveys the main challenges regarding the PFC totem pole digital control design and implementations, mainly addressing the problems related to
the voltage controller design and handling of the zero-crossing point of the ac voltage. For a dual control loop totem pole PFC, analysis and design of the inner and outer control loop is given...
U prezentaciji je prikazana praktična realizacija energetski efikasnog
elektromagnetnog pogona i pripadajućeg amplitudski-frekventno
kontrolisanog energetskog pretvarača, koji se koriste za pogon
vibracionog transportera primenjenog u sistemu za transport, doziranje i
odvagivanje smrznutog voća i povrća.
• Realizovani pobudni sistem vibracionog tra...
Fokus ovog istraživanja razvoj potpuno automatizovane proizvodnje sadnica uz pomoć robota i veštačke inteligencije.Jedna od ključnih prednosti leži u njegovoj sposobnosti da samostalno izvršava pojedinačne zadatke, čime postiže specifične ishode u procesu proizvodnje sadnica. Integrisanjem više podsistema u jednu jedinicu, naš sistem nudi inovativa...
Focus of this research is the development of a fully automated
seedling production process using robots and AI-supported automated
systems.
The PPT presents the realization of a hybrid and uninterruptible power system
(HUPS) based on renewable energy sources (solar and wind) which is used for
irrigation of vegetable crops on the "smart land" at the location of the village
"Belegiš".
U prezentaciji je prikazana realizacija tehničkog rešenja postrojenja za detekciju i izdvajanje metalnih delova na transportnoj traci broj 5 (UZ-5) na dopremi uglja sa površinskog kopa „Drmno“ (TE „Kostolac“). Osnovni elementi postrojenja su metal detektor i elektromagnetni separator. Svaki od ovih elemenata je montiran na robusnu mehaničku konstru...
U prezentaciji je prikazana realizacija daljinskog nadzora i kontrole hibridnog postrojenja za navodnjavanje useva na privatnoj poljoprivrednoj parceli površine oko 10ha u mestu Belegiš. Hibridni sistem navodnjavanja je baziran na dominantnom korišćenju obnovljivih izvora energije (OIE), sunca i vetra, uz korišćenje baterijske banke 48V/1000Ah i di...
U prezentaciji je data analiza magnetnog polja i privlačne elektromagnetne sile snažnog elektromagneta koji se koristi u sklopu elektromagnetnog separatora (EMS) za izdvajanje metalnih delova na transportnim trakama na dopremi uglja.
Analiza je urađena metodom konačnih elemenata korišćenjem programskog paketa FEMM 4.2. Za modeliranje magnetskog kol...
U prezentaciji je dat predlog rešenja solarnog tragača koji se može koristiti u sredinama bez stalno dostupnog konvencionalnog izvora električne energije, kao što je elektroenergetska mreža. Sam uređaj osmišljen je tako da bude veoma jednostavan za transport, montažu i demontažu. Suština razmatranja je da se da predlog rešenja koje treba da zadovol...
For the last several decades, energy harvesters based on piezoelectricity from mechanical vibration have emerged as very promising devices that are being explored extensively for their functionality in energy technologies. In this paper, a series of flexible lead-free BaZr 0.2 Ti 0.8 O 3 (BZT)/PVDF and lead-based PbZr 0.52 Ti 0.48 O 3 (PZT)/PVDF pi...
Nowadays, every individual strives to achieve energy independence. The most widespread way to achieve that goal is the use of renewable energy sources. This group also includes the energy of the Sun, which is exploited using solar panels. As a relatively new way to obtain energy, solar panels represent a branch of energy that has yet to develop its...
Nowadays, every individual strives to achieve energy independence. The most widespread way to achieve that goal is the use of renewable energy sources. This group also includes the energy of the Sun, which is exploited using solar panels. As a relatively new way to obtain energy, solar panels represent a branch of energy that has yet to develop its...
U radu je dat pregled postojećih topologija energetskih pretvarača za prikupljanje i pretvaranje energije iz mehaničkih vibracionih struktura u električnu energiju. U industriji, saobraćaju (drumskom i železničkom), ali i u svakodnevnom životu, postoje brojni izvori mehaničkih vibracija iz kojih je moguće prikupljati energiju, pretvarati je u elekt...
U radu je predstavljen visokonaponski sistem za polarizaciju ultra tankih filmova poliviniliden fluorida (PVDF) posredstvom visokonaponske korone. PVDF je polimer sa jedinstvenim karakteristikama, kao što su piezoelektrične i feroelektrične. Perspektiva primene ovih filmova je u sistemima za sakupljanje energije iz mehaničkih vibracionih struktura...
U radu je prikazan konkretno realizovani sistem energetskih pretvarača koji se koristi u sklopu hibridnog sistema za kontrolisano navodnjavanje useva na pametnoj digitalizovanoj njivi površine 10ha u mestu Belegiš. U ovom sistemu se kao primarni izvori energije koriste sunce i vetar, a dizel električni agregat se koristi samo kao nužno napajanje. S...
The paper presents the realization of an experimental setup used for testing energy harvesting and storage devices based on the use of lead-free bismuth sodium titanate-barium titanate (NBT-BT) in combination with polyvinylidene fluoride (PVDF) polymer. PVDF is a polymer matrix in which piezoelectric phase is dispersed and enables formation of flex...
The paper presents the method of numerical simulations for the selection and arrangement of PV panels based on the software tool PVSOL. The presented optimization method was used for forecast analysis and production planning of a solar power plant on roof with an output power of 400kW AC. Simulations were made for the case of changing the arrangeme...
The paper presents the realization of an experimental setup used for testing energy harvesting and storage devices based on the use of lead-free bismuth sodium titanate-barium titanate (NBT-BT) in combination with polyvinylidene fluoride (PVDF) polymer. PVDF is a polymer matrix in which piezoelectric phase is dispersed and enables formation of flex...
The paper presents the method of numerical simulations for the selection and arrangement of PV panels based on the software tool PVSOL. The presented optimization method was used for forecast analysis and production planning of a solar power plant on roof with an output power of 400kW AC. Simulations were made for the case of changing the arrangeme...
The main purpose of the solar photovoltaic power
plant (SPVPP), with installed power of 500 kW on the roof of the
factory GRUNER Serbian Ltd in Vlasotince, is to electrical
supply of consumers in the factory. Considering the geometric
dimensions of the roof and the daily and monthly profiles of
electricity consumption in the factory, at the beginni...
Razvijeni elektroenergetski pretvarač kombinuje dobre osobine VF i 50Hz-nog napajanja i baziran na strujnoj kontroli i daje na svom izlazu pravougaoni talasni oblik struje učestanosti 50Hz. Ovom strujom se napaja primar visokonaponskog transformatora (VNT). Na izlazu pripadajućeg visokonaponskog ispravljača (VNI) je moguće dobiti napone od 20-100kV...
Hybrid "off-grid" power systems have gained great importance during the energy crisis. Agricultural irrigation systems are largely dependent on power grid, but in cases where the power grid is unavailable or intermittent character, hybrid "off-grid" power systems are practically the only solution. This paper presents some basic topologies of hybrid...
