Patent ID: 9587627
Date: 2017-03-07
CPC Classifications: F03D,F05B,Y02E

Claim:
1. A control method for mitigating rotor imbalance on a plurality of blades of a wind turbine, the method comprising: sensing parameter signals of the plurality of blades through a plurality of Micro Inertial Measurement Units (MIMUs), wherein at least one of the MIMUs is physically configured on each of the blades such that the signals from the MIMUs are in response to one or more real-time actual physical conditions induced on the blades; calculating blade bending moment values of the plurality of blades based at least on the sensed parameters; calculating blade bending moment error signals of the plurality of blades based on the calculated blade bending moment values of the plurality of blades and a plurality of blade bending moment commands; calculating pitch angle compensation commands of the plurality of blades based on the calculated blade bending moment error signals; and using the pitch angle compensation commands to adjust pitch angles of the plurality of blades to compensate for the real-time bending moments induced on the blades as sensed by the MIMUs.