In this paper,the principle of power-factor angle metrical apparatus based on CPLD is analyzed,and the hardware circuit and the VHDL program are also given.

• 分析了基于CPLD进行功率因数角测量的基本原理,给出了硬件实现电路及VHDL源程序,简化了电路,提高了系统的可靠性和灵活性,获得了很高的测相位精度和稳定性