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The article concentrates on the energy storage problem arising from small scale residential electricity generation, in the current case wind micro turbine and PV panels. The research objective is to increase the locally consumed energy share by using two water tanks, aiming to shorten the breakeven periods of the renewable energy production devices. The shaved peaks from stochastic wind turbine and...
The current paper explores a solar and wind energy system that is capable of operating in both: on-grid and off-grid regimes. The system contains two on-grid and one off-grid inverter for that purpose. The off-grid operation of the analyzed system is more vulnerable to instabilities. Experiments where made to show how inrush currents of electrical loads cause transient processes in such a renewable...
This paper explores the problems of the averaging and interpolation of electricity consumption and distributed photovoltaic energy generation data on higher than hour resolution levels. The paper compares different interpolation methods, like linear and spline interpolation and discusses modelling approaches for the energy data reconstruction on the basis of minutely and hourly data. The results are...
In order to guarantee the sufficient efficiency using biomass for the anaerobic digestion (AD) process, lower mineral solid fuels production, saving same time most of fertilizing elements the silage mechanical separation process can be applied. Press liquids (PL) from separation in fact shows tendency to higher biogas yield per dry-matter (DM) on AD process and press cake (PC) gives comparable biogas...
This paper addresses the problems of output power distribution and variability of small wind turbines. The aim of the study was to increase the share of locally consumed renewable energy and decrease power fluctuation in residential houses that meet their energy demand using wind energy. A system with shiftable water heating and decreased inverter power, which avoids unnecessary conversion steps for...
The current paper analyses with what pace and magnitude the output power of small photovoltaic systems and small wind turbine systems changes. This is of critical importance for the optimization of demand management, storage optimization and data acquisition of such systems. Data was compared from a photovoltaic and a wind turbine system that were located in the same geographic location. It was found...
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