The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The following paperwork presents a comparative analysis of synchronous and non-synchronous boost converters. Analytical determination of the losses is derived and compared with the results of the simulations. The compared converters are realized and investigated experimentally. Thermographic images are used to analyze the dissipated losses in the two converters and each of their components. A methodology...
The main advantages of the resonant converters are the high efficiencies, low losses and minimal stress over the power semiconductors achievable with the soft-switching capabilities. This improvement over the standard half- and full-bridge converters comes with added complexity but nevertheless offers several performance benefits. The aim of this paper is to presents methodic for the design and verification...
In present work is carried out modelling of single transistor parallel ZVS DC-DC converter. Main advantage of power circuit is direct work in steady mode. Thus, that allows avoiding a starting procedure and guarantees reliable operation in significant major change in load occur. The model is realised with Matlab. Computer simulations and experiments in lab model are performed by which the model is...
This paper presents a converter for charging and equalizing voltages across energy storage elements (ESE) — superconductors or rechargeable batteries, which are connected in series. The converter operates in soft switching mode: ZVS conditions are provided. The charged elements are galvanically separated from the main by high frequency transformers. Transformers and rectifiers can be made constructively...
This paper presents mathematical and physical model of permanent magnet synchronous machine which enable simulation and experimental studies of various dynamic modes of operation of electric vehicle in laboratory environment. The mathematical model is realized in Matlab programming language. It provides useful information for investigation of the dynamic modes including control strategies related...
In the following paperwork a photovoltaic power supplying system for telecommunication equipment has been modelled. The power supplied equipment can be radio communication equipment, active equipment for optic networks and other. The model is developed in LabView. The chosen capacities of the energy storage elements (ESE) can be determined by using the developed model. The model can be used to determine...
The paper presents modeling of parallel-loaded resonant converter in the development system MATLAB®. A mathematical model is composed using the laws of electrical engineering — specifically the circuit laws of Kirchhoff. The model is evaluated with design parameters suited to represent continuous current operating regime. A comparison for the model's verification is done in other simulation software...
In the paperwork models of converters for energy storage elements have been developed. The models are made by using the software: LTSpice and Matlab. The results from the studies are compared with results obtained from a real experimental model. Specific output circuits for supercapacitor cells charging have been modeled. These models are applicable in different power circuits for similar applications...
This paper presents the modelling and control of a grid-connected PV system in LabVIEW environment. The proposed control system provides interactivity with the grid: the control system features communication with the grid operator and thus it is able to operate either in maximum power point tracking (MPPT) or in limited power point tracking (LPPT). The second is useful in certain cases when there...
The paper present a buck dc-dc converter used for supercapacitor charging. A description of circuit with the differential equation system is done and a mathematical model is created with the development environment MATLAB/Simulink. Simulations are carried on with given initial conditions. The results show that the converter is working stable with different distorting influences. A hardware realization...
This paper presents modeling and study of a boost DC-DC converter with guaranteed output parameters. The developed models of the power and control circuits are detailed [1]. The models are synthesized in MATLAB environment. The behavior and mutual influence on the operation of both the power circuit and the control system are examined. Control algorithms for various types of loads are proposed and...
In this paperwork a circuit for charging supercapacitors has been studied. This circuit also provides voltage balancing over series connected supercapacitor cells. Simulation models have been created, using MatLab and LTSpiceIV. Simulations and experimental studies have been made.
The aim of this paper is to present methodic for the design and verification of a controller for resonant inverter using hardware in the loop configuration. Peculiar to the power electronics converters is that their hardware realization is expensive, consumes significant time and is associated with an existing support infrastructure - powerful mains grid, water cooling with high performance and providing...
In the following paperwork a mathematical model of an electronic converter for charging energy storage elements has been created. The model is verified with simulation and experimental studies. The proposed circuit can be used for charging and voltage equalization over series connected energy storage elements - supercapacitors. The circuit allows modularity.
The paper is studying serial constant current single transistor resonant converter with zero voltage switching (ZVS). The converter uses resonant inverter, which can start its operation directly in steady mode, hereof can work in mode close to short-circuit in the load. The converter was used for supercapacitor charging. The circuit provides charging with uniform current and voltage balance between...
In this paper we make modeling of process in driving system of electric vehicle with realization of a particular assignment state of departure. The realization is made by the utilization of the specialized software Multisim, through which hardware implementation of the model is simple, fast and unified. Conclusions are made for the necessary energy from the power source for the implementation of the...
The following paperwork presents results from examination of a resonant converter with voltage limitation over the commutating capacitor. The converter is used for charging of energy storage elements — supercapacitors or batteries. Computer simulations are carried out by the means of LTspice. The results from the computer simulations are verified with experimental studies. The experimental studies...
The report studies a serial and parallel constant current single transistor ZVS resonant inverter. The converter uses a resonant inverter, which can work directly in steady mode. That's why the circuit can work in mode, close to short circuit in the load. The simulation studies are made for the power scheme and for the control system with Matlab/Simulink and Orcad.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.