交流数控信号源的设计

The design of AC source of digital controlled

校正用交流电源在电力行业有重要的应用.该电源设计采用单片机实现,遵照电力行业规范,实现频率0.01Hz,相移0.1度的控制,且信号幅值连续.控制的频率和相位偏移误差均达到了10-5,稳定度达到了0.05%.可作为电能表校验的信号源,也可用于电力系统按频率自动减负荷设备的调试等.

The proofread of AC （Alternating Current） source is very important in power supply system. The singlechip is set in it and, based on Standards of Power Supply, when frequency change is 0.01Hz and phase shift is 0. 1 degree, the signal amplitude value is successive. When error of the frequency and phase shift is 10-5, its stability is 0. 05 %. It can be used in checkout of electric kilowatt-hour meter and automatic frequency load-dropping debug in power supply system.