Forestage energy-accumulating alternative feed type high-voltage transformer suitable for broad pulse load

Abstract

The invention discloses a forestage energy-accumulating alternative feed type high-voltage transformer suitable for a broad pulse load, which relates to a transformer technology. When the working pulse width is 1.7 ms, the duty ratio is 32 percent, the cathode current is 90 mA, the cathode voltage is 6 kV and the high-voltage drop is not more than 10 V, the total accumulated energy of a high-voltage power supply is less than 0.5 J. When the high-voltage power supply is used for feeding for a load similar to a pulse traveling-wave tube and the output pulse width is more than 50 us, high pulse power is instantaneously output to the load through the high-voltage transformer by using the accumulated energy of a forestage low-voltage side, high-voltage top drop applied to the load is maintained at an approximate value, and high-voltage-stage high energy accumulation is avoided, so that damage to the load caused by excessive accumulated energy of the high-voltage power supply during internal ignition of loads such as the traveling-wave tube and the like is avoided, and the reliability of a high-voltage power system is improved. The forestage energy-accumulating alternative feed type high-voltage transformer has the advantages of no need of any heavy high-volume high-voltage capacitor, greatly reduced entire size, small inherent discharging energy, high protection speed and wide application to occasions, such as aviation, spaceflight and the like, in which high inherent reliability is required.

Description

technical field [0001] The invention relates to the technical field of high-voltage power supply circuits, and relates to a pre-stage energy storage alternate feeding high-voltage converter suitable for wide pulse loads. Background technique [0002] The normal operation of devices such as pulse traveling wave tubes and lasers requires a high-voltage power supply to provide high peak power for them. In wide pulse applications (above 50us), in order to maintain a proper top drop (below 0.5%) of the high-voltage power supply, the high-voltage power supply often needs to use a large-capacity high-voltage energy storage capacitor. The huge energy storage at the high-voltage end will bring great reliability risks to the system—firstly, the reliability of the high-voltage large-capacity energy storage capacitor itself is not high; secondly, when the load is ignited, the excessive energy storage will directly damage the expensive load, and cause direct or potential damage to the l...

AI Technical Summary

Problems solved by technology

Huge energy storage at the high-voltage end will bring great reliability risks to the system—first, the reliability of the high-voltage large-capacity energy storage capacitor itself is not high; second, when the load is ignited, excessive energy storage will directly damage the expensive load, and cause direct or potential damage to the low-voltage circuit, resulting in system failure; third, the large-capacity high-voltage energy storage system has a large volume and weight, and its application is greatly restricted

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