增益调度控制对风电机组功率影响研究

RESEARCH on GAIN SCHEDULING CONTROL EFFECT for WIND TURBINE＇S POWER

随着机组容量的增大，如何设计机组控制器提高风电机组功率，降低风电机组载荷成为风电机组发展面对的主要问题。本文以3MW直驱风电机组为例，在传统PI恒增益控制的基础上设计风电机组增益调度控制器，风电机组状态切换逻辑，利用外挂控制模块编写风电机组外挂控制器。在恒定风和湍流风条件下对传统PI控制器和增益凋度控制器进行仿真对比。仿真结果表明，在恒定风条件下，传统PI控制器和增益调度控制器控制效果大致相同。湍流风条件下，增益调度控制下的风电机组功率大于传统PI控制器，且机组功率和发电机转速的振荡明思小于PI控制器，降低了机组传动链疲劳载荷，保护了机组安全.

With the increase of unit capacity, how to design the controller of wind turbine to improve the wind turbine power and reduce the load of wind turbine becomes the main problem facing the development of wind turbine. In this paper, setting 3MW direct drive wind turbine as an example, design wind turbine gain scheduling controller based on the traditional PI constant gain control. Then design wind turbine state switching logic. Make simulation to compare gain scheduling wind turbine controller and the traditional PI wind turbine controller under constant wind and turbulence wind conditions. The simulation results shows that the traditional PI controller and the gain scheduling controller have the same control effect under the constant wind condition. But under turbulence wind condition, the wind turbine power under the control of gain scheduling controller is larger than that of the traditional PI controller. Besides that, the vibration of the generator power and generator speed of the gain scheduling controller is much smaller than that of the PI controller, which increases the unit power and reduces the fatigue load of the drive train and protect the wind turbine.