This paper analyses several tools and methods for the comprehensive and
efficient development of Power Electronics control systems. Hardware In the
Loop technology enhances a possibility for ...compromising two opposing demands:
the requirement for exhausting testing process and a requirement for as short
time to market as possible. The procedure was presented through development
and testing of one complex control algorithm for the connection of the
permanent magnet synchronous generator to the electrical grid. Development
steps are explained and analysed in detail. Finally, several scenarios based
on presented tools and methods are proposed.
Exploration of Pliocene, Pleistocene and Holocene deposits in of the Croatian Northern Adriatic and Southern Dalmatia (coastline) offshore is presented in this paper. It was a way to describe the ...existing lithostratigraphic units in Croatian Po River sediments and to determine such units in the depositional area of Neretva River. Both systems have been influenced by sea-level fluctuations during the Quaternary, resulting in significantly decreased sea depths and increased subaerial exposure during glacial periods, especially in the Northern Adriatic. In the Croatian part of Po Depression, two new formations were mentioned – Istria (Pliocene) and Ivana (Pleistocene, Holocene). Three new lithostratigraphic members were described within Ivana Formation, namely Anamarija, Katarina and Izabela. Further south, in the Southern Dalmatia shallow offshore, Pliocene, Pleistocene and Holocene deposits were named the new Neretva Channel Formation. This formation was further divided into Neretva Sands (sometimes equivalent for entire formation) and the (Quaternary) Mali Ston Bay Member. No typical Pliocene lithotype has yet been recognised.
In this paper, a systematic and analytical study of non-isolated topologies belonging to the family of reduced redundant power processing (R2P2) converters is presented. Based on this study, all the ...non-isolated R2P2 topologies that can be implemented in reality are derived. Detailed examples clarify all possible cases of this analysis. In addition to this, the voltage ratio and the efficiency for each one of the R2P2 configurations are calculated, being further illustrated with examples. A comparison among configurations is also discussed with criteria the high step-up voltage gain and efficiency, aiming for high-power applications. One of these R2P2 converters is selected for further examination, as the most suitable for such applications. The theoretical analysis, as well as the calculations of the step-up voltage ratio and efficiency of the selected converter, is compared to experimental results conducted on a 2-kW laboratory prototype designed to operate in various step-up voltage ratios and in a high-power range, proving the effectiveness of the proposed investigation.
Exploration of Pliocene, Pleistocene and Holocene deposits in of the Croatian Northern Adriatic and Southern Dalmatia (coastline) offshore is presented in this paper. It was a way to describe the ...existing lithostratigraphic units in Croatian Po River sediments and to determine such units in the depositional area of Neretva River. Both systems have been influenced by sea-level fluctuations during the Quaternary, resulting in significantly decreased sea depths and increased subaerial exposure during glacial periods, especially in the Northern Adriatic. In the Croatian part of Po Depression, two new formations were mentioned – Istria (Pliocene) and Ivana (Pleistocene, Holocene). Three new lithostratigraphic members were described within Ivana Formation, namely Anamarija, Katarina and Izabela. Further south, in the Southern Dalmatia shallow offshore, Pliocene, Pleistocene and Holocene deposits were named the new Neretva Channel Formation. This formation was further divided into Neretva Sands (sometimes equivalent for entire formation) and the (Quaternary) Mali Ston Bay Member. No typical Pliocene lithotype has yet been recognised.
Control structures governing distributed generation sources (DGSs), utilized in microgrids, have to provide several important functionalities and generally secure stable network operation. The large ...majority of these control structures are based either on droop (or droop-derived) or other, more advanced, control paradigms. The former are overly simplistic and necessitate control layerization and many extensions for the overall control structure to be applicable in the general case. The latter are either too complex or application-specific, rendering them unfit to be adopted as a general tool for controlling DGSs in microgrids. The control scheme derived in this paper is based on a goal function that simultaneously secures safe and stable operation, respecting voltage amplitude and frequency limits, and precise active power exchange. As such, the proposed control scheme integrates what is traditionally called primary and secondary control of microgrids and enables reliable peer-to-peer power exchange. The control scheme was tested using simulation tools and together with the simulation results, a performance analysis is provided.
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