Power supply circuit, repeated flat-topped pulse high-intensity magnetic field generation device and control method thereof

Abstract

The invention discloses a power supply circuit, a repeated flat-topped pulse high-intensity magnetic field generation device and a control method thereof, and belongs to the technical field of pulse power. A storage battery type circuit topology is adopted, and an energy storage capacitor is used for discharging an inductive load to generate a pulsed magnetic field; compared with the prior art, the external high-voltage charger is adopted to charge the energy storage capacitor, the storage battery can be externally connected with charging equipment according to the duration time of the flat-topped pulsed magnetic field, and the charging equipment can monitor the electric quantity of the storage battery on line; in a power supply circuit topology, an energy feedback branch is designed and is used for realizing energy feedback of an energy storage capacitor and reducing energy consumption of a system; a compensation branch is designed and used for outputting stable flat-top current, so that the stability of the flat-top part of the magnetic field is realized; and the discharge voltage of the energy storage capacitor is improved, a steep output current rising edge is generated to reduce heating of an inductive load, and meanwhile the repeatability and stability of a magnetic field are improved. The circuit has the advantages of simple structure, stability in control, high reliability, convenience in implementation and the like.

Description

technical field [0001] The invention belongs to the technical field of pulse power, and more specifically relates to a power supply circuit, a device for generating a repetitive flat top pulse strong magnetic field and a control method thereof. Background technique [0002] Repeating flat-top pulsed magnetic field is a system that continuously and repeatedly provides a controllable waveform strong magnetic field. It has the advantages of high stability flat-top magnetic field. It can maintain high stability in the flat-top stage, so the flat-top ripple coefficient is small , The electromagnetic interference caused is relatively small, and it can run for a long time. At the same time, it can effectively reduce the impact of the magnetic field on the experimental equipment environment and the measurement and control system. Compared with the common flat-top magnetic field system, because the power supply system and the magnet inductive load need to run longer, the requirements...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and improvement needs of the existing technology that the rapid drop of the battery voltage makes it difficult to support the repetitive flat-top magnetic field for a long time, the stability of the flat-top magnetic field is low, it is difficult to generate high-parameter repetitive flat-top magnetic fields, and the energy utilization rate of the power supply system is not high, The present invention provides a power supply circuit, a device for generating a repetitive flat-top pulse strong magnetic field and a control method thereof, the purpose of which is to reliably generate a repetitive flat-top magnetic field, and at the same time better realize the energy feedback of an energy storage capacitor

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