我们设计了一套航空用交流励磁发电机系统，以保证输出电压恒频恒压。
We design a suit of aviation AC excitation generator system, it insures the output voltage is constant frequency and constant voltage.
经PSPICE软件仿真和小功率电路实验证明，“通过改变开关角而实现调节输出电压”的闭环设计方案是可行的。
Tested by PSPICE simulation and small power experiment, the designing project "adjusting output voltage by changing on and off time of the SPWM" is practical.
电压控制电压控制是设定电压调整器的运行点从而在设计范围内控制发电机组的输出电压的变阻器。
Voltage control the voltage control is a rheostat that sets the operating point of the voltage regulator and therefore controls the output voltage of the generator set, within its design limits.
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