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Study of a grid-connected hybrid wind/micro-hydro power system

This paper reports on experimental results for a hybrid wind/micro hydro power system connected to the grid. It comprises, on one side, a doubly-fed induction generator linked mechanically and electrically (through back-to-back power electronic converters in the rotor circuit) to a permanent- magnet synchronous machine, which may recover or supply the slip power, and, on the other side, a fixed- speed wind generator driven by a squirrel-cage induction generator. Simulations in Matlab/ Simulinktrade environment for two supervisory strategies of the hybrid power system under study are also presented.