Variable pitch system for offshore high-power wind driven generator group and control method for variable pitch system
A technology of wind turbine and pitch control system, which is applied in the control of wind turbines, wind power generation, wind turbines, etc. It can solve the problems of complex hydraulic pitch drive structure, high cost of offshore wind power construction, and difficulty in high-precision control. The effect of reducing the risk of component failure, optimizing the life-cycle cost, and simplifying the structure
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[0041] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, a pitch system for offshore high-power wind turbines includes an independent pitch drive system 2 on each blade, a pitch control system 1, a limit switch 5, an angle encoder 11 and a slip ring 10, The pitch drive system 2 is installed in the hub at the front of the nacelle, and its communication and power are realized through a slip ring 10 connected to the main control system in the nacelle; the pitch drive system 2 includes a drive system 2, a permanent Magnetic motor 3, reducer 4, blade root sensor 6, pitch bearing 7, encoder 8 and storage battery 9, described driving system 2 is connected with permanent magnet motor 3 through cable, and the output shaft of permanent magnet motor 3 is connected with reducer 4 is connected to the input shaft, the output pinion of the reducer 4 is meshed with the inner ring gear of the pitch bearing 7, the r...
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