**4. Conclusion**

This chapter is devoted to a large scale wind diesel Hybrid Power System (HPS). It presents theoretical analysis, modelling and control of Wind Energy Conversion Systems (WECS) connected to an autonomous power system with hydrogen storage. The wind generator un‐ der study is a Doubly Fed Induction Generator (DFIG) type. The models of the main compo‐ nents (mainly wind turbine, generator, diesel generator, electrolyzer) are derived. Power transfer strategy in the interconnected system was presented. The effectiveness of the pro‐ posed control strategy was validated by simulation using Matlab/ Simulink/ SimPowerSys‐ tems environment.
