Small size hydro plants are commonly constituted of fixed speed drives. To allow extended control features for these sources in order to integrate them into the energy grid, an autonomous variable speed doubly fed induction generator (DFIG) based source involving power electronics is proposed. Modelling process of the DFIG is described; it leads to a unified control strategy for operation on a power grid or isolated loads. Control scheme of the whole station for both operating modes is assessed by means of simulations. At this stage, transition from grid connected mode to isolated one is discussed. In a second stage this non conventional hydropower plant is tested experimentally on isolated loads and also in grid connection mode with the help of a 3 kW DC machine based turbine emulator.
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