초록 ▼

Two independent adjusting systems are recommended for each rotor blade ( 6 ) for blade angle adjustments of the rotor blades ( 6 ) of the rotor of a wind power plant, assuring full redundancy of the blade angle adjustment. By suitable control of the individual adjustment paths of the two adjustments

Two independent adjusting systems are recommended for each rotor blade ( 6 ) for blade angle adjustments of the rotor blades ( 6 ) of the rotor of a wind power plant, assuring full redundancy of the blade angle adjustment. By suitable control of the individual adjustment paths of the two adjustments systems, additional advantageous effects can be gained, such as good lubricant distribution and/or even load distribution over time (FIG. 1 ).

대표청구항 ▼

1. An apparatus, comprising:means for adjusting a rotor blade with its longitudinal axis extending out from a rotor hub of a wind power plant through an azimuthal adjustment angle with respect to the longitudinal axis, two independent adjustment systems each of which produces adjustment of the rotor

1. An apparatus, comprising:means for adjusting a rotor blade with its longitudinal axis extending out from a rotor hub of a wind power plant through an azimuthal adjustment angle with respect to the longitudinal axis, two independent adjustment systems each of which produces adjustment of the rotor blade even in case of failure of the other adjustment system, wherein each of the two adjustment systems has a rotatable connection between the rotor hub and the rotor blade that is adjustable by a drive and the two rotatable connections are arranged substantially concentric with each other. 2. The apparatus according to claim 1, wherein the two rotatable connections are axially separated from each other. 3. The apparatus according to claim 2 wherein one of the two rotatable connections and its drive are placed at the rotor hub and the other rotatable connection and its drive is placed outside the rotor hub. 4. The apparatus according to claim 3, wherein the rotatable connection placed outside the rotor hub and its drive is placed on a tubular part extending axially between the two rotatable connections. 5. The apparatus according to claim 4, wherein the tubular part is a fiber composite part preferably produced with a winding process. 6. The apparatus according to claim 1, wherein one of the two rotatable connections and its drive is placed on the rotor hub and the other rotatable connection and its drive is placed directly on the rotor blade. 7. The apparatus according to claim 6, wherein the drive of the rotatable connection placed at the rotor blade is placed substantially within the rotor blade. 8. The apparatus according to claim 6, wherein the drive of the rotatable connection on the rotor blade is placed substantially outside the rotor blade. 9. The apparatus according to claim 1, wherein the two adjustment systems can be actuated simultaneously, especially in the case of a safety shutdown. 10. The apparatus according to claim 1, wherein the azimuthal adjustment rate resulting from operation of the two adjustment systems controllable variably, depending on one or more of time, the rotor blade angle, and the distance of adjustment. 11. The apparatus according to claim 1 wherein the adjustment rate of one adjustment system is controlled as a function of the adjustment distance of the other adjustment system. 12. The apparatus according to claims 1 , wherein at least one, of the adjustment systems is an electrical system. 13. The apparatus according to claim 12, wherein the adjustment rate is changed by stepwise switching on or off of batteries feeding the motor. 14. The apparatus according to claim 12, wherein the adjustment rate is changed by stepwise reconnection of a stator winding of the drive. 15. The apparatus according to claim 12, wherein the drive of one adjustment system has a series-wound motor (M 2 ) and the drive of the other adjustment system has a shunt-wound motor. 16. The apparatus according to claim 12, wherein the drive of one adjustment system is a three-phase motor and the drive of the other adjustment system is a direct-current motor. 17. The apparatus according to claim 1, further comprising:a monitoring system, by which, in case of a failure of one of the two adjustment systems, the adjustment rate of the other adjustment system is adjustable upward. 18. The apparatus according to claim 1, wherein the axes of rotation of the two rotatable connections are at an angle to each other. 19. The apparatus according to claim 1, wherein the two rotatable connections are formed by a single live ring bearing with three rings and two bearing housings. 20. A process for adjusting a rotor blade with its longitudinal axis extending out from a rotor hub of a wind power plant through an azimuthal adjustment angle with respect to the longitudinal axis, using a drive having two independent adjustment systems, each of which comprises an adjustable rotatable connection between the rotor blade and the rotor hub, characteri zed in that the two rotatable connections are driven relative to each other during the setting of a specified adjustment angle in a manner which favors even distribution of lubricant in the rotatable connections and are driven relative to each other in opposite directions when maintaining a constant adjustment angle of the rotor blade. 21. An apparatus, comprising:a first electric motor driven adjustment system having a first drive actuator to adjust a rotor blade with its longitudinal axis extending out from a rotor hub of a wind power plant through an azimuthal adjustment angle with respect to the longitudinal axis;a second adjustment system having a second drive actuator to adjust the rotor blade through the azimuthal adjustment angle, the two adjustment systems being independent and each producing adjustment of the rotor blade even in case of failure of the other adjustment system, and wherein the first drive actuator and the second drive actuator are driven relative to each other in opposite directions when maintaining a constant adjustment angle of the rotor blade. 22. An apparatus, comprising:means for adjusting a rotor blade with its longitudinal axis extending out from a rotor hub of a wind power plant through an azimuthal adjustment angle with respect to the longitudinal axis characterized in that the means has two independent adjustment systems each of which produces adjustment of the rotor blade even in case of failure of the other adjustment system, wherein the two adjustment systems each have a rotatable connection between the rotor hub and the rotor blade which can be adjusted by a drive and that one of the two rotatable connections and its drive are placed at the rotor hub and the other rotatable connection and its drive is placed outside the rotor hub. 23. An apparatus, comprising:means for adjusting a rotor blade with its longitudinal axis extending out from a rotor hub of a wind power plant through an azimuthal adjustment angle with respect to a the longitudinal axis characterized in that the means has two independent adjustment systems each of which produces adjustment of the rotor blade even in case of failure of the other adjustment system, wherein each of the two adjustment systems has a rotatable connection between the rotor hub and the rotor blade which can be adjusted by a drive and that one of the two rotatable connections and its drive are placed at the rotor hub and the two rotatable connections are axially separated from each other.