基于PR控制的风电机组整流侧并网系统研究

Research of synchronous direct-drive generators wind power grid system

在详细分析风电机组并网工作原理的基础上,重点研究了风电发电机组(PMSG)整流侧电压型PWM变流器的数学模型,提出并采用电压外环PI控制与电流内环PR控制相结合的双闭环控制策略实现了机组整流侧的有效控制,文中给出了详细的控制方案与系统参数设计原则,为验证文中策略的有效性,在理论分析的基础上构建了完整的仿真模型与实验样机模型,仿真与实验结果表明文中提出并采用的控制方案该系统响应快速、具有良好的动静态性能,为直驱式风电机组应用具有重要的参考意义。

On the base of detailed analysis of wind turbine grid work principle,the mathematical model of voltage source PWM inverter are mainly studied.The voltage loop with PI control and the current inner with PR control strategy is adopted to achieve the effective decoupling control of the rectifier side of unit,At the same time,the detailed principle of control scheme and design of parameters is given out,on the basis of theoretical analysis to build a complete simulation model and experimental prototype model,simulation and experimental results show that the system response is rapid and has good dynamic and static performance,has important reference significance for the direct drive unit grid engineering applications.