Modeling of Small-Scale Hydrokinetic Turbine for Distributed Generation

In this paper is presented the mathematical modelling of a small-scale hydrokinetic generator. The system consists of a turbine, permanent magnet synchronous generator, DC-DC converter, a single phase grid-connected inverter. The control system of the model has two loops - one for maximum power point tracking of the generator and a second one for control of the power exchanged with the grid. The model is implemented in Matlab/Simulink environment and is validated by simulations with various changes in the water stream speed. The developed model can be further implemented in simulations of microgrids with distributed generation and storage.