Variable frequency three-level electric generator digital voltage adjusting method

The invention discloses a variable frequency three-level electric generator digital voltage adjusting method. Within a rated rotation speed range, through a voltage-duty cycle converting method, preadjustment of an excitation source voltage value is achieved, and according to a design principle, when a voltage at the electric generator no-load end of the electric generator at any rotation speed isa reference voltage, the duty cycles output by a voltage adjustor are all constant, so that the open-loop benefit of a forward channel of a pressure adjusting system is not influenced by the rotationspeed of the electric generator. A DCDC converter does not need to be additionally added, and the size and the weight of a controller of the variable frequency electric generator are not increased. 本发明公开了种宽转速范围航空三级式发电机数字电压调节方法，在额定转速范围内，通过电压-占空比转换方法来实现励磁源电压值的预调整，设计准则是发电机在任何转速下发电机空载端电压为基准电压时，电压调节器输出占空比均恒定，使调压系统前向通道的开环增益不受发电机转速的影响。本发明不需要额外增加DCDC变换器，不增加变频发电机控制器的体积和重量。