Digital control pulse power supply system for solenoid excitation

Abstract

The invention discloses a design of a digital control solenoid pulse excitation power supply system, relates to a power supply, and particularly relates to, but not only relates to a solenoid excitation pulse power supply system for a physical experiment. The system comprises a capacitor array charge and discharge control circuit, a high-voltage capacitor array, an IGBT drive circuit, a transient current measurement circuit, a load solenoid coil and a switching power supply module. An ADuCM360 single chip computer is utilized as a main control chip, a flyback booster type switching power supply is controlled to charge the capacitor array, collection and digital feedback are carried out on the charging condition, and an IGBT circuit is controlled. Controllable peak pulse current excitation of the load solenoid coil is achieved through boosting charging of a controllable end point of the high-voltage capacitor array and connecting the high-voltage capacitor array and the load solenoid coil through an IGBT to form a second-order oscillation circuit. A man-machine interface is achieved by employing a liquid crystal display screen and a key switch, charging mid-point voltage of the capacitor array is reversely derived from a target peak of pulse current through a built-in algorithm, and adjustable digital control on the peak of the pulse current is achieved.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular but not only to a numerically controlled pulse power supply system for solenoid excitation. Background technique [0002] Solenoids are multiple coils of wire that can be hollow or contain a magnetic core. When a current passes through the wire, a uniform magnetic field is generated inside the solenoid. By controlling the magnitude of the current on the solenoid coil, the magnetic field strength of the uniform magnetic field generated inside the coil can be controlled. [0003] A single-chip microcomputer (single-chip microcomputer), also known as a microcontroller (microcontroller), integrates various input and output interfaces such as a central processing unit, a memory, and a timer / counter (timer / counter) into an integrated circuit chip. on the microcomputer. Its biggest advantage is that it is small in size and can be placed inside the instrument, but it has s...

AI Technical Summary

Problems solved by technology

The traditional BJT has a small on-resistance, but the drive current is large, while the MOSFET has a large on-resistance, but has the advantage of a small drive current.

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