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Beijing, China

Patent
Sinovel Wind Group Co. | Date: 2012-10-15

The present invention provides a method of applying a pre-tightening force on an anchor bolt, which comprises: installing washers with a predetermined dimension between tower flange and fastening nuts, the washers are configured to support the supporting bridge of tensioner; applying a pre-tightening force on the anchor bolts in an inner ring and the anchor bolts in an outer ring installed on the tower flange with the tensioners. According to the present invention, the method of applying a pre-tightening force on an anchor bolt adopts the washer with a predetermined dimension to replace the conventional washer, such that the tensioner will not directly contact the surface of tower flange, and pressure of the tensioner is transmitted uniformly to tower flange via the washer, avoiding damage to paint on the surface of tower flange and improving installation quality and service life of the tower.


The present invention discloses a wind turbine generator as well as a parameter acquisition system and a method thereof. The acquiring system comprises: at least one sensor, arranged in the hub of the wind turbine generator and configured to acquire environment operation parameters of the hub, and a data processing module, comprising a parameter acquisition unit, a parameter reading unit and a storage unit, wherein the parameter acquisition unit is connected with each sensor and configured to obtain environment operation parameters acquired by the each sensor; the parameter reading unit is connected with pitch drivers in the wind turbine generator and configured to read load characteristic parameters of the pitch drivers; the storage unit is connected with the parameter acquisition unit and the parameter reading unit and configured to store the environment operation parameters and load characteristic parameters.


Patent
Sinovel Wind Group Co. | Date: 2012-01-20

The invention discloses a pitch control system for a wind turbine and a method, comprising a main controller, a secondary controller, a motor and a pitch gearbox, wherein the main controller is connected with a plurality of the secondary controllers through a communication bus; each blade corresponds to one controller and at least two motors, and one pitch gearbox is driven by each motor. The main controller is used for calculating a pitch expected value according to wind speed as well as power and rotation speed of a generator; and the motor is driven by the secondary controller according to the pitch expected value, so as to drive the pitch gearbox and hence drive the blades to vary a pitch angle.


Patent
Sinovel Wind Group Co. | Date: 2012-01-20

A universal precise leveling measuring device and measurement method thereof, comprising: a plate-shaped horizontal base, a round bubble level set at the center of an upper surface of the base, and three outriggers set on the base, wherein at least one through-hole is set at one end of each of the outriggers far from the base, and a point contact bolt set in the through-hole; the three outriggers are extended in different directions and in the same plane parallel to the base, and included angle of two adjacent outriggers is smaller than 180. With the universal precise leveling measuring device of the present invention, the prior art manual levelness measurement of foundation flange of wind power generator carried out by using a scale and a level is modified into dynamic measurement only by using the universal precise leveling measuring device, thus increasing the measurement precision and simplifying the measurement procedures.


Patent
Sinovel Wind Group Co. | Date: 2012-02-17

A wind turbine generator system fault processing method and a wind turbine generator system fault processing system are provided. The method comprises: receiving a detection signal sent by a detection element for detecting a running state of a part of a wind turbine generator system, and setting a fault bit corresponding to the part of the wind turbine generator system in a fault state or a non-fault state according to the detection signal; detecting whether the fault bit corresponding to the part of the wind turbine generator system is in the fault state; acquiring a fault control word corresponding to a fault bit of the fault state; and determining whether a part corresponding to the fault bit of the fault state has non-halting fault according to the fault control word, and if so, performing fault reset processing on the fault bit of the fault state.

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