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Experiences from various countries show that without initial state support it is not possible to build basis for applying of t echnologies using renewable energy sources. Presented contribution is orientated to the various mechanisms that are using for support of renewable energy sources. That means st ate regulation in this area generally and basic types of state donation policy in th e frame of European Union and their consequences on the market with renewable energy sources.

Here we try to find a compromise way of controlling a continuous variable power system by adopting a hybrid architecture in which the renewable energy sources are coupled with the classic power grid. In such an architecture, a big issue is the control algorithm for management of the energy sources, which had to be designed in such a way that the final consumer remain powered on at all times. We proposed a control algorithm which compares the input and output powers, if the input power is lower than the output, the...

Widespread use of renewable energies is a global priority that must not be ignored. Optimal production and use of renewable energy sources is a necessity. In the current context, characterized by alarming incr ease in pollution caused by energy production from combustion of fossil fuels, is becoming increasingly important to reduce dependency on these fuels. Energy recovery and conservation aim at solutions for a substantial reduction in fuel consumption. In this context we can mention hydrostatic regenerative hyb...