同步发电机空载三相两项短路情况下的各相波形以及励磁电流波形-Three-phase synchronous generator no-load short-circuit in case of two-phase waveform and the excitation current waveform

用Simulink中的SimPowersystem完成一个转速、电流双闭环直流调速系统的设计与仿真。采用三相桥式整流，平波电抗器Lp的大小可根据根据仿真调整。给出电机在空载启动，以及在2.5S后加额定负载时转速、电流、电压的变化曲线，并结合调速理论分析这些曲线。-A rotational speed in Simulink SimPowersystem to complete the design and simulation of the current double closed loop

基于标幺值的同步发电机模型建立空载电压方程-No-load voltage equation based on the per-unit value of the synchronous generator