Discussion on Several Issues in New Power Voltage Stabilizer

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Discussion on Several Issues in New Power Voltage Stabilizer

Abstract: In the new contactless compensation type power stabilizer, bidirectional thyristor is used as the switch device. This paper introduces the basic working principle of the system and analyzes some existing problems and their solutions.

Keywords: voltage regulator, thyristor, transformer

Most of the power voltage stabilizers on the market currently use servo motors to drive carbon brushes to adjust the output voltage. It has the advantages of high overall efficiency, good output waveform and simple circuit, but due to the carbon brushes and mechanical transmission, its service life is short and the response speed is slow. Replacing "carbon brushes" with "contactless" is the current development direction of high-power power voltage stabilizers. The "contactless" here refers to the use of power devices such as bidirectional thyristors to replace carbon brushes, and the use of microcomputers to achieve logic control and voltage regulation through compensation transformers, thereby achieving the purpose of extending service life, accelerating response speed and improving reliability.