Power Quality Monitoring Device of EMU Traction Network Based on ZYNQ
Aiming at the power quality problem of traction network during EMU operation,a power quality monitoring device for traction network of EMU was designed in this paper based on ZYNQ platform.XC7Z045 chip of ZYNQ-7000 series was se-lected as the main control chip of the device,and adopted modular design,including signal acquisition module,signal processing module and data transmission module.The signal acquisition module used the AD9251 chip to realize synchronous high-speed ac-quisition of the original voltage and current data.Signal processing module used PS composed of dual-core ARM Cortex-A9 con-tained in the main control chip and PL composed of FPGA to realize high-speed data processing.Data transmission module used Ethernet chip and network transformer to construct gigabit network circuit to realize high-speed data transmission.The experimen-tal results show that the device has stable performance and high calculation accuracy,and the calculation error of each parameter is within 0.5%,which can meet the demand of power quality monitoring of EMU traction network.
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