The Research Of A Compact Repetitive Pulsed Guiding Magnetic Fields Power Supply

Some repetitive high-power microwave sources adopting the rep-rate pulsed magnetic field can reduce the energy consumption of the solenoid, decrease heating and make it more compact. It conforms to modern high-power microwave (HPM) of being compact and repetitive. Nowadays, rep-rate pulsed magnetic field has attracted extensive attention. In this thesis, the method to design rep-rate pulsed magnetic fields is obtained and a Primary energy source which the average power can reach 4.65kW is developed based on the theoretical analyses, engineering designs and experimental investigations of the three key subsystems:solenoid which can produce magnetic fields, power circuit of Primary energy source and intelligent controller system (ICS). Based on it, with the designed solenoid, the magnetic fields can reach 2.21T which is perfect for Ka-BWO. The research results set basis for the wide application of rep-rate pulsed magnetic fields to repetitive HPM. The main content of this dissertation is presented as follows:1. The design of solenoid is presentedPulsed magnetic field needs to take the eddy current loss of micromave tube into account, so it is different from the direct current magnetic fields. The circuit which can output repetitive HPM has been analyzed. The paper started from the expression of current which producing the pulsing magnetic fields. The design is based on the following principle:the eddy current loss, capacitive energy store and circuit energy consumption couldn't be too more. The optimization of the capacitive storage and its voltage for pulsing magnetic fields producing system are designed. At last, the design method of solenoid is presented by an example.2. The power circuit of Primary energy source is investigated in detail.Primary energy source which affords energy for solenoid should have fast charging rate and high efficiency. Three familiar charging methods for capacitor are analyzed and discussed, high frequency and constant circuit charging method which has fast rate and high efficiency is suitable for the demand. Several high frequency and constant circuit charging method are presented and contrast, series resonant constant current charging circuit is selected for Primary energy source. Constant current expression is deduced by an equivalent circuit model for series resonant topologies. The main power circuit has been analyzed theoretically and the correlative parameter of circuit is deduced. The design method of the circuit parameter is given and a designed example is present. At last, the design of high frequency transformer is introduced simply.3. The design of ICS is presentedThe working principle of ICS is analyzed and discussed. The framework for hardware system and flow chart for software are presented. The main chips in master control panel are introduced simply, and the anti-jamming measure is discussed in stress. The working principle of trigger circuit is analyzed in detail. At last the design of software system is introduced simply.4. The designed RHPM system is experimentally investigatedSimulation and experiments of low voltage and high voltage on Primary energy source have been conducted. A compact Primary energy source with output voltage 0-2.5kV and average power 4.65kW is developed, and it is experimentally investigated across a 200μF energy store capacitor and 1350V charging voltage, at 10 Hz repetition rate, the output can reach 750A peak value pulsed current which can bring 2.21T leading magnetic fields.