| 20090121485 | WIND POWER FACILITY HAVING ACTIVATION CIRCUIT FOR A SPEED-LIMITED AND VOLTAGE-SOURCE-PROTECTIVE OPERATION OF A PITCH -DRIVE SERIES-WOUND MOTOR AT GENERATOR TORQUES - A wind power facility includes an activation circuit for a speed-limited and voltage-source-protective operation of a pitch-drive series-wound motor at generator torques. The activation circuit can comprise a pitch-drive series-wound motor, in which armature winding and exciter winding are connectable separately from one another, a load resistor R | 05-14-2009 |
