The open loop time constant of the main generator influence the overshooting evidently. The important factor is the rising speed of the output DC voltage.
主发电机的开环时间常数会对建压过冲产生影响，而输出直流电压的上升速度也是一个重要因素。
2
PLC samples the remanence voltage of generator and measures its period with software to get the signal of fire speed.
PLC采样发电机的剩磁电压，通过软件编程测取剩磁电压的周期，来获得原动机的点火转速信号。
3
Since the original motive of synchronous generatorspeed and excitation voltage coupling relations, the excitation system designers at the same time have to consider speed control.