Large current pulse power supply suitable for electromagnetical repulsion force repulsion mechanism

Abstract

The invention discloses a heavy-current pulse power supply suitable for an electromagnetic repulsion mechanism, which comprises a capacitor charging device, a capacitor discharging device, a capacitor control device, and a charging/discharging control device, wherein the capacitor charging device is realized by serially connecting a rectifier bridge and an MOS transistor, and is used for realizing the charging of an energy storage capacitor; the capacitor discharging device is realized by a thyristor and a coil, and is used for realizing the discharging of the energy storage capacitor; the capacitor control device is realized by an analog hysteresis circuit and an analog voltage-dividing detection circuit, and is used for realizing the constant voltage control of the energy storage capacitor; and the charging/discharging control device is realized by an analog logic circuit, and is used for controlling the charging and/or discharging of the capacitor charging device and/or the capacitor discharging device to the energy storage capacitor. The heavy-current pulse power supply realizes quick charging/discharging and high-precision constant-voltage control of the energy storage capacitor, thereby realizing quick action of a fast mechanical switch.

Description

Technical field [0001] The present invention relates to the field of electric power technology, and more specifically to a high-current pulse power supply suitable for electromagnetic repulsion repulsion mechanisms. Background technique [0002] To protect sensitive important industrial loads from short-term disturbances from the power system (for example, the influence of voltage drops and voltage swells), and to improve the power quality of the power system, high-speed circuit breakers are required to switch on and off at a high speed. Gate characteristics. The spring operating mechanism, electromagnetic operating mechanism, permanent magnet operating mechanism and hydraulic operating mechanism commonly used in current high-voltage circuit breakers have a closing speed range of 0.4m / s~0.6m / s, and an opening speed range of 0.8 m / s~1.0m / s, closing time range is 40ms~60ms, opening time range is 20ms~40ms, it is difficult to meet the requirements of fast closing and opening. [000...

AI Technical Summary

Problems solved by technology

The opening and closing time of ordinary circuit breakers is long, and the requirements for the energy storage part are relatively low, and the mechanical energy storage such as springs can meet the requirements; the circuit breaker using permanent magnet electromagnetic drive has relatively low requirements for the response time and instantaneous release energy of the energy storage part. Higher, which requires a large current pulse power supply suitable for electromagnetic repulsion repulsion mechanism

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