PWM型串級調速裝置——GTO在交流調速裝置中的應用

A Pulse-Width Modulated (PWM) Type of Cascade Connected Device for Speed Control——The Utilization of GTO for Alternating Current Device

摘要: 本文論述了可控硅逆變器逆變角影響串級調速裝置功率因數的基本原理。從而闡明了當采用PWM型串級調速裝置時,它的功率因數可得到一定程度的改善。從研制的PWM型串級調速裝置試驗結果,證明了理論分析的正確性。由于這種裝置的結構和控制較簡單,在實際應用中能得到較大的經濟效益。

Abstract: This paper discusses the basic principle which the inverted firing angle of thyristor inverter has the influence on power factor of a cascade connected device. On the basis of this principle, if it adopts a PWM type of cascade connected device, the power factor is improved to a certain extent. The tested results fully prove that the thcoritical analysis is correct.
Because the construction and control of this PWM type of cascade connected device are comparatively simple and the economic benefit by using of this device is got.