【摘要】 建立了包含风力机、双馈发电机及发电机电气控制部分的变速恒频风力发电机组的整体动态数学模型;以该数学模型为基础应用MATLAB软件搭建了用于研究变速恒频风电机组和固定转速风电机组并网特性的数字仿真工具。并以风速发生阶跃变化及风速发生不规则扰动为例,仿真比较了具有相同参数的变速和固定转速的风电机组相应物理量的响应特性。仿真结果表明了所建模型的正确性及变速恒频双馈电机具有良好的动态特性。更多还原

【Abstract】 An overall dynamic model for variable speed wind turbines (VSWT), including the wind-turbine, doubly-fed generator and electrical control of the generator, is established. To research the characteristics of VWST and constant speed wind turbine (CSWT) while they are interconnected with power network a digital simulation tool is constructed on the basis of above mentioned dynamic model by MATLAB. Taking two phenomena, i.e., the irregular disturbance and the step change of the wind speed, for examples, the response characteristics of the corresponding physical quantities of the VSWT and CSWT with same parameters are simulated and compared. The simulation results show that the established model is correct and VSWT possesses good dynamic characteristics.更多还原