FPGA realization of reactive power measurement system based on FFT

FFT is a kind of algorithms of reactive power measurement. It has high measurement precision and can be easily implemented on hardware. Now it is widely used in reactive power measurement. FPGA model of reactive power measurement based on FFT is put forward in this paper. Two ways to achieve FFT results are designed in this paper. One way is to use FFT IP core provided by Altera Company, and the other way is to design FFT by ourselves with programs. The system is implemented on EP2C50 series FPGA chips of Altera Company. Some characteristics of the system such as precision, speed and resource consumption are analyzed in details.