Research On Shielding Effectiveness And Analysis Of The Internal Magnetic Field Distribution Of Control Unit In The Pulse Power Sourse

This dissertation research electromagnetic interference of the monitoring and control unit in the module, with pulse power modular technology as the background. With the development of electromagnetic launch technology, high request has been put forward to pulsed power source module,such as miniaturization and modularization, which have become the development trend of this technology. Development of new technologies has also brought new difficulties.The electromagnetic interference that hinders the module development ,previously being paid little attention, is also an important field of study. The main thesis is the shielding effectiveness measurement and control unit and the internal magnetic field distribution analysis. The major work is as follows:First of all, introduce the pulsed power source system working principle, simulate the module discharge process by the software,and research the interference approaches of monitoring and control unit theoretically. On that basis the anti-interference measures was analysed.Secondly, deduce the external magnetic field theory calculation of pulsed reactor and take the calculation. the external magnetic field spectrum characteristics of pulsed reactor is got by the spectrum analysis. Get the method of reducing magnetic field interference of measuring unit on that basis.Thirdly, select the appropriate tests and shielding point to test the internal magnetic field of the monitoring and control unit. Analyse the experimental data of the test to research the shielding effectiveness of the monitoring and control unit.Finally, in the monitoring and control unit select seven points,and according to the data analysis of the seven points find the internal magnetic field distribution of the monitoring and control unit in the module discharging process.The result of this dissertation obtained valuable laws and has certain directive function for the structure design of pulse power source modular and the electromagnetic compatibility analysis of measurement unit.