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This paper presents the application of an online stability monitoring technique (MT) for droop controlled power converters in DC microgrids. This method is based on Middlebrook's loop-gain measurement technique, adapted to digitally controlled switched-mode power supplies (SMPS). In particular, the MT is used to evaluate the stability margin in control loops of droop-controlled distributed energy...
This paper describes a new Wind Energy Conversion System (WECS), where fuzzy logic principles and a Matrix Converter (MC) model are used for performance enhancement and efficiency optimization. The MC is used as the interface between the Permanent Magnet Synchronous generator (PMSG) and the grid. The power at the interface with the grid is controlled by MC to ensure that the active power injected...
Changes in the velocity and direction of wind, causes to change in the turbine input power and in turn, affects the operation of the system, for instance; output voltage, power and torque of an islanded wind turbine changes proportional to wind speed variations. Therefore, accurate and reliable forecasting systems for wind speed are widely recognized as a major contribution for increasing wind penetration...
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