双馈风力发电机控制策略的仿真研究

变速恒频双馈风力发电机组主要工作在同步速附近,在这一运行区域转子励磁电流频率很低(同步速时为0),通过转速来调节转子励磁频率很难保证双馈发电机输出功率的稳定.通过对东北新能源公司大连驼山风电厂东汽FD77E型风机实际运行情况的研究分析,将DTC技术应用到双馈风力发电机的控制领域.首先对直接转矩控制技术进行了理论分析,阐述了它的工作原理和系统结构,进而推导出控制方程,并给出了具体的控制框图,然后利用MATLAB进行了仿真研究,仿真结果验证了理论分析和提出的策略是可行的.

Doubly fed wind generator control strategy simulation

Variable-speed constant-frequency doubly fed wind generators work at the synchronous speed,the excitation current frequency of rotor is low in this region(synchronous speed to zero).It's difficult to ensure the output power stability of double-fed generator by regulating the speed of the rotor with the excitation frequency.Based on the analysis of FD77E wind generator of new energy company wind power plant in dalian tuoshan,the Direct Torque Control technology is applied to wind generator control areas.Firs...