Research on Several Key Technologies for the Development of Power Analyzer

This paper presents several technologies for the development of a power analyzer based on FPGA high-speed synchronous acquisition and real-time transmission strategy in order to meet the requirements for the power analyzer’s accuracy, sampling rate, real-time, and synchronization in measuring high-frequency harmonic signals. The method of synchronous sampling of two ad9226 processors can simultaneously sample four analog signals at a sampling rate of 10MSPS per channel, followed by a ping-pong operation for alternate caching. The system uses Xilinx’s Tri-Mode Ethernet IP core based on the AXI bus for UDP communication between the FPGA and PC. The PC calculates and analyses the user's signal. In the meantime, the optical transceiver module is added to replace the cable with an optical cable in order to accomplish electrical isolation via photoelectric conversion, thereby preventing potential ground faults during the measurement process and ensuring reliable data transmission. After experimental analysis, the synchronous sampling rate and real-time performance meet expectations, the data transmission rate reaches 640 Mbit/s, and the accuracy of signal measurement reaches 0.095%.