Design of Three-phase reference energy meter based on FPGA and ARM

Compared with the normal energy meters which use the integrated measurement chip as the key component, the three-phase reference energy meter based on FPGA and ARM possesses the advantages of high precision. And compared with the energy meters which use DSP as the key part, it has the advantages of small volume and multi-parameter measurement. The design method of three-phase reference energy meter integrating FPGA with ARM is presented in this paper. And the individual miniaturization design are discussed, the key parts during the realization are also discussed. After that, two kinds of electric energy metrological algorithm which are digital differential and instantaneous IV are introduced according to the characteristic of the system, and the advantages and disadvantages of them are compared. All this work will provide powerful foundation for the engineering applications of design method.