Modeling and Control of Direct Drive Variable Speed Stand-Alone Wind Energy Conversion Systems
نویسندگان
چکیده
This paper proposes a small wind energy conversion system comprises permanent magnet synchronous generator (PMSG), uncontrolled rectifier, conventional H-Bridge inverter and dc-dc bi-directional converter. The dc link capacitor is connected to a storage system through Bi-directional power flow link. A hybrid pulse width modulation (HPWM) controller is used to regulate the ac load voltage and frequency while the power flow control is achieved by bi-directional dc/dc converter. A maximum power point tracking (MPPT) control is employed where the storage system is used to feed the required power balance between the wind power and the load power. The complete system is studied, analysed and simulated using PSIM to validate the system performance. Finally, simulation and experimental results have been provided. Index Terms PMSG, HPWM, Bi-directional Converter, and Power flow controller.
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