A terminal voltage doubler multi-magnetron centralized power supply system and method

Abstract

The invention discloses concentrated power supply system and method of terminal voltage-multiplying multiple magnetic magnetrons. The system is provided with a main power supply and a plurality of magnetron biasing modules, wherein the plurality of magnetron biasing modules are connected onto the output of the main power supply in parallel through high-voltage transmission lines; the main power supply outputs a large-power high-voltage alternating current, and a voltage effective value is half of a negative high-voltage value supplied by a cathode direct current of the magnetron; the high-voltage transmission lines are a firing line and a grounding line, the firing line and the grounding line are insulated, the firing line can stand the alternating voltage output from the main power supply, and the potentials of the grounding line and the earth are equal; and each magnetron biasing module comprises a voltage-multiplying circuit and a filament voltage generation circuit, the voltage-multiplying circuit is mainly used for carrying out voltage-multiplying and rectification of the high-voltage alternating current transmitted from the main power supply and generating the negative high voltage of the cathode direct current of the magnetron, and the filament voltage generation circuit is composed of an induction coil and a rectification circuit and used for generating a filament voltage of the magnetron. By the system and the method, the power supply problem of an industrial microwave device is solved, and the system is high in reliability and has important application value in multi-magnetic magnetron application occasions.

Description

technical field [0001] The invention belongs to the technical field of industrial power supplies, and in particular relates to a terminal voltage doubler multi-magnetron centralized power supply system and method. Background technique [0002] At present, the magnetron is a high-power microwave source with small size, high efficiency and light weight, which has the advantages of simple structure, convenient use and low price. With the rapid development of microwave technology, the application field of magnetron continues to expand, and has been widely used in industrial fields such as insecticide and sterilization, waste gas treatment, mineral processing, chemical extraction, military, aerospace, lighting, and material growth. In applications, it is often necessary to supply power to multiple magnetrons at the same time. In traditional microwave equipment, the magnetron adopts distributed power supply, that is, one magnetron is equipped with one power supply, and each power...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a terminal voltage multiplier type multi-magnetron centralized power supply control system and method, aiming to solve the problems of large number of power supplies, installation difficulties, The heat dissipation structure is complex and maintenance is difficult; the power supply is installed inside the industrial microwave oven, the working environment temperature is high, dust and water vapor are seriously affected, and the reliability is difficult to guarantee

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