PWM型串级调速装置——GTO在交流调速装置中的应用

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

摘要: 本文论述了可控硅逆变器逆变角影响串级调速装置功率因数的基本原理。从而阐明了当采用PWM型串级调速装置时,它的功率因数可得到一定程度的改善。从研制的PWM型串级调速装置试验结果,证明了理论分析的正确性。由于这种装置的结构和控制较简单,在实际应用中能得到较大的经济效益。

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.