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A systematic methodology for smooth connection of wind-turbine-driven doubly fed induction generators (DFIGs) to the grid is presented. Synchronization of the voltage induced in the DFIG open stator to that of the grid, which needs to be accomplished prior to connection, is thoroughly examined. A particular grid-voltage-oriented rotor control scheme is considered for this purpose. Generic tuning equations...
The autonomous power generation system with DFIG dedicated for diesel driven gensets is presented. Characteristics of torque and power versus speed of internal combustion engine ICE are analyzed at an angle of application in electrical power generation. Features and advantages of variable speed operation versus fixed speed operation of internal combustion engine are described. The vector control method...
Power electronics devices used in power generation systems with electrical machines allow variable speed operation. A high quality output power is delivered to the transmission network. Moreover the power electronics allow stand alone operation in an island power systems, as well as in grid connected systems during the mains outage. This way the variable speed power generation systems are useful even...
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