大功率直接变频电路的简化分析

大功率直接变频电路的基本功能是实现频率和电压的直接变换,被应用于航空电源和调速电源中。本文针对由晶闸管组成的九相一单相直接变频电路进行分析,建立了便于工程应用的简化模型,利用该模型在计算机上仿真得出了输出电压频谱以及电路参数对该频谱的影响,为系统的设计提供依据。本文的分析结果可推广并适用于其他同类型直接变频电路。

The Simplified Analysis of the Large Power AC-AC Frequency-Change Circuit

The large power AC-AC frequency-changers are used in the aircraft power source and AC speed-regulation systems to convert frequency and voltage directly. In this paper, The main circuit of the nine-phase to single-phase which consists of thyristors has been studied in detail. The digital computer model of this circuit was built, which is of great use in engineering. The spectrum of output voltages and their change rules have been obtained by using computer, on the basis of analysis, the general rules of AC-AC frequency-change circuits are derived. The method and results in the paper will be helpful in the system design.