But with wind power capacity enlarging constantly and stochastic and incontrollable wind energy , wind asynchronous generator " s frequent startup will take inverse impact to wind power system stability , which is one of the most important restricting factor on wind power " s large - scale development 然而，随着风电装机容量的不断扩大，风能的随机性和不可控性，使得相对频繁起动的风力异步发电机，对风电系统稳定性的影响也愈来愈大，成为制约风力发电规模发展的主要因素之一。
It also builds the mathematic model of all section of vscf ac exited wind power generation system on a - b - b and d - q coordinate system by the coordinate commutation technology . the thesis gives the characteristics of torque , active power , reactive power and the steady - state analysis of it . it proves that the capability of wind generator is determined to slip , the amplitude and phase of rotor voltage , the phase dispatch between stator voltage and rotor voltage 并分析了交流励磁风力发电机作变速恒频运行时的工作原理，阐述了与同步发电机、异步发电机的不同之处，分析了其能量平衡关系，在坐标变换技术的帮助下，详细推导了交流励磁发电机在a - b - c坐标系和d - q坐标系下的数学模型，分析并仿真了其有功和无功特性、转矩和功率调节特性、稳态运行和机械特性，证明了发电机的性能由转差率、转子电压的相位和幅值、定转子电压相位差所决定的。
