驱动脉冲负载的18脉波ATRU滤波特性分析

Analysis on Filtering Characteristics of 18-Pulse ATRU Based on Pulse Load

摘要: 飞机供电系统中的AC/DC变换器，将115 V/400 Hz交流电转换为270 V直流电，提供给大量的电力电子设备。为了减小电网上的电流谐波，多脉冲整流技术得到广泛使用，自耦变压整流器(ATRU)是其中之一。论文讨论了18脉波ATRU的直流滤波器设计，重点分析了在驱动PWM控制的脉冲负载时的滤波特性，以及驱动恒功率负载时的滤波器参数的选择。

Abstract: The AC/DC converter of aircraft power supply system, converting 115 V/400 HZ AC to 270 V DC, drives a lot of power electronic devices. In order to reduce the grid current harmonic, multi-pulse rectifier technology is widely used and the auto-transformer rectifier unit (ATRU) technology is one of them. This essay discusses the filter design of 18-pulse ATRU, analyzes the filtering charac-teristics when ATRU drives pulse load and the choice of filter parameters when drives constant power load.