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In the following article a converter, providing management of the energy flow from the photovoltaic system (PV) to the elements for energy storage - supercapacitors, has been studied. The proposed converter provides charging and voltage balancing across series connected elements (supercapacitor cells). Simulation and experimental studies of the proposed circuit, from the PV system, has been made. Characteristics of the tested converter were made. [ABSTRACT FROM AUTHOR]

The present paper considers a developed by the means of the LabVIEW software virtual instrument for modeling and control of three-phase BUCK rectifier with sinusoidal PWM. It generates control pulse sequences which can be used to control a rectifier via proper hardware and driver stages. The structure of the virtual instrument is presented. Results from its operation are obtained and compared to the ones from a simulation of the device via MATLAB Simulink. Apart from the control capabilities, this virtual instrument can be used for simulation of the operation of three-phase rectifiers with sinusoidal PWM as well. [ABSTRACT FROM AUTHOR]

The purpose of this paperwork is to present a developed an experimental stand for testing different kinds of bi - directional circuits, providing a work of a supercapacitors in renewable energy systems - photovoltaic systems. A simulation model has been created of the studied bi - directional converter. During combined operation between a supercapacitor and a battery there are mainly two kinds of wiring methods. In the first method the battery is working in buffer mode and the supercapacitor is connected to the bi - directional converter. The second method is when the supercapacitor is working in buffer mode and the battery is connected to the bi - directional converter [1, 5]. In this paperwork a renewable energy system build in the first method is studied. For testing different circuit kinds of bi - directional converters in photovoltaic systems, an experimental stand, described in this work, has been created. The information measuring system is realized by the softwer LabView. In the document a comparison between the simulation and experimental results has been made. [ABSTRACT FROM AUTHOR]

In this paper are presented result from testing full-bridge Power Electronic Converters - inverters, studied with Computer tester. The different algorithms are created in environment for graphic programming - LabVIEW, while controlling impulses are submitted to power circuits through special hardware module, manufactured by National Instruments - CompactDAQ. This allows the study of different operating mode of inverters. [ABSTRACT FROM AUTHOR]