公开(公告)号：US20120193917A1

公开(公告)日：2012-08-02

申请号：US13355469

申请日：2012-01-20

申请人： XI CHEN ,  Lei Li ,  Xuan Cai

发明人： XI CHEN ,  Lei Li ,  Xuan Cai

IPC分类号： H02P9/04

CPC分类号： F03D7/0224 ,  F03D7/047 ,  F05B2240/40 ,  F05B2260/79 ,  Y02E10/723

摘要： 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.

摘要翻译： 本发明公开了一种风力发电机的变桨控制系统，包括主控制器，副控制器，电动机和变速齿轮箱，其中主控制器通过通信总线与多个次级控制器连接; 每个叶片对应于一个控制器和至少两个电动机，并且一个变速箱由每个电动机驱动。 主控制器用于根据风速以及发电机的功率和转速来计算音高预期值; 并且电动机根据俯仰期望值由次级控制器驱动，以便驱动变桨齿轮箱，从而驱动叶片来改变桨距角。

公开(公告)号：US20120041609A1

公开(公告)日：2012-02-16

申请号：US13086248

申请日：2011-04-13

申请人： Lifu XIN ,  Xuan CAI ,  Lei LI

发明人： Lifu XIN ,  Xuan CAI ,  Lei LI

IPC分类号： G06F1/28

CPC分类号： F16N29/02 ,  F03D7/0224 ,  F03D80/70 ,  F05B2260/79 ,  F05B2260/98 ,  F16C2360/31 ,  F16N2210/025 ,  F16N2250/00 ,  F16N2250/42 ,  Y02E10/723

摘要： The present invention provides a control method of an automatic lubrication system of a variable-pitch bearing used for a wind turbine generator system (WTGS). The method comprises the following steps: calculating a current friction factor of the variable-pitch bearing using a current friction moment of the variable-pitch bearing of WTGS; determining a demand of lubrication grease according to the operation power of WTGS and the current friction factor of the variable-pitch bearing, wherein the friction factor of the variable-pitch bearing to be obtained is taken as an objective; customizing a lubrication control strategy according to the demand of lubrication grease, wherein a predetermined energy production of WTGS is taken as an objective; calculating lubrication target regions according to an average wind speed and a power of an wind turbine, the lubrication target regions being operation regions of the tooth surfaces of the variable-pitch bearing; meanwhile, calculating an angle difference between grease discharge points of a lubrication pinion and the lubrication target regions; moving the angle difference by an actuator of a variable-pitch system under the control of the main controller of the WTGS, and carrying out automatic lubrication according to the control strategy. The present invention has the advantage that good lubrication is realized for the variable-pitch bearing and variable-pitch tooth surfaces.

摘要翻译： 本发明提供了一种用于风力发电机系统（WTGS）的可变节距轴承的自动润滑系统的控制方法。 该方法包括以下步骤：使用WTGS的可变节距轴承的当前摩擦力矩计算可变节距轴承的当前摩擦系数; 根据WTGS的操作功率和可变节距轴承的当前摩擦系数确定润滑脂的需求，其中将要获得的可变节距轴承的摩擦系数作为目的; 根据润滑脂的需求定制润滑控制策略，其中以WTGS的预定能量产生为目标; 根据平均风速和风力涡轮机的功率来计算润滑目标区域，所述润滑目标区域是所述可变俯仰轴承的齿面的操作区域; 同时计算润滑小齿轮的润滑脂排出点与润滑目标区域之间的角度差; 在WTGS主控制器的控制下通过变桨距系统的执行机构移动角度差，根据控制策略进行自动润滑。 本发明的优点在于可变节距轴承和可变节距齿面实现良好的润滑。