| Pulsed power supply technology is electromagnetic launch system key technology; it has high voltage, high current, and high power characteristics. And the development direction of the field focuses on miniaturization and modular PPS, in the research process, unit of measurement and control system is applied to monitoring power module’s working condition, In the process of charging and discharging, it plays a very important role in the module, unit has weak voltage, low current and is particularly sensitive to magnetic fields, which produced by pulsed reactor and high power devices. So PCB’s EMC research, which has good guidance to the optimization design of PPS module and solve data acquisition circuit’s EMC problem. The main research works as follows:First of all, based on circuit,magnetic circuit and electromagnetic compatibility basic theory, System understanding the EMC design, then briefly analysis load discharge characteristic that module power discharge process in the paper.Secondly, Hall Effect sensor is used to test pulse reactor side magnetic field and measurement and control unit place, forecasting measurement and control unit’s PCB interference degree by electromagnetic field.Thirdly, using Cadence/Allegro and CST collaborative simulation, getting test point’s coupling voltage of PCB under the plane wave vertical irradiation. And the paper has experimental tests under Spark advanced high voltage discharge environment and power module discharge environment.the results show the PCB components anti-interference characteristics.Finally, according to the simulation and experimental results, the paper puts forward the specific anti-interference measures by the external interference source of PPS and the internal interference source of measurement&control circuit.The paper advanced corresponding references for the design of the miniaturization pulsed power source and measurement&control circuit EMC. |
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