摘要
随着风力发电机组向着大型化发展,单机容量在不断增加.为了满足风力发电机组功率输出稳定和减小风力发电机组载荷的要求,大型风力发电机组基本上都采用了变桨距控制技术.通过阻力系数和风能利用系数的数学关系推导出阻力系数与风力发电机功率输出的关系,在模拟叶片老化中引入风机的失效运行状态,提出在失效运行状态下采用变桨距控制与调整发电机转矩和转速相结合的控制策略.通过Bladed软件进行仿真,结果表明失效运行状态下提出的控制策略能够使风机安全运行.
As the size of wind turbines is getting larger, power per unit of wind turbines is increasing. In order to guarantee the stability of power output and load decrease, pitch control system has been adopted in large-sized wind turbines. This paper offers the relationship between the drag coefficient and the electrical power by examining the connection between the drag coefficient and the rotor power coefficient. The failure operation is introduced to the simulation of the aging of the blade. Then, a combination of generator torque-speed control and pitch control is utilized under the efficiency-losing state of running. Bladed-based simulation results display that the wind turbine operates safely by using the strategy under the failure operation.
出处
《河北工业大学学报》
CAS
北大核心
2011年第6期11-15,共5页
Journal of Hebei University of Technology
基金
河北省自然科学基金(F201000135)
河北省科技支撑计划(11213944)
关键词
变桨距控制
电机转速转矩控制
.叶片老化
失效运行状态
Bladed仿真
pitch control
generator torque-speed control
aging of blade
efficiency- losing state of running
Bladed-based simulation
