Design Of A Portable Pulse Magnetic Field Calibration System

The size of the pulsed magnetic field measurement system is mainly decided by thesize and complexity of the power system. In recent years, because of the rapiddevelopment of diversification of control, the energy density, the repetition rate, powerelectronics technology, especially the switching device manufacturing standards, highpulse energy density of the substantial increase in capacitance, control technology, andextensive use of computer technology, the pulsed power supply develops quickly. Thetechnology mentioned has become a narrow power volume, increased power controlaccuracy and reliability of the research.This issue focuses on completing the design and construction of a small pulsed highmagnetic field for magnetic field measurement, and realizing the fast charge control andprecisely discharges control of the system power supply part. This paper introduces theapplications and research background of the pulse power energy storage capacitor powersupply, and proposes the research target of this issue based on series resonant controltechnology and the existing high-power pulsed magnetic field power supply technology.In this paper the following aspects were described in detail:First, several types of the current existing power supply devices of the pulsedmagnetic field are analyzed, the circuit models are established respectively, the circuits aresimulated, the actual devices get analyzed, and the advantages and disadvantages ofdifferent types of devices are compared.Second, the constant charging technology is selected as the charging mode of theenergy storage capacitor of pulsed magnetic field, and the key technology--series resonantgets analyzed.Third, the detailed method of designing the main circuit and the control circuit of thepower supply system of pulsed magnetic field is given. The controller is designed basedon TMS320F2812chip, and the power supply system prototype is set up. Fourth, the parameters of the pulse capacitor discharge circuit are analyzed, seriesthyristor discharge switches are designed, and the problem that the optical fiber gettriggered simultaneously is solved.