FPGA realization of reactive power measurement system based on phase-shift

There are two ways to carry out phase-shift of reactive power measurement. One is based on the sampling points, the other is to use Hilbert filter. The two ways are designed and simulated with MATLAB in this paper. Hilbert filter is realized on EP2C50 series of EPGA, which has not been done by others so far. As statistics shows sampling points method has some limitations, while Hilbert Reactive Power Measurement is relatively more reliable and can ensure a more accurate result.