交直交主传动装置谐波分析及治理

以新型供电整流变压器的绕组结线组别、主传动装置配置的可关断功率元件IGCT(integrated gate commutated thrusters)或IEGT(injection enhanced gate transistor)和主动整流前端装置(active rectifier unit,ARU)的并联脉动组合接线型式特性为基础,提出了新型中压交直交主传动装置超高次谐波电流计算分析和治理方案.分析超高次谐波电流的特性,对电气设备和生产运行的危害,以及对其进行治理的必要性,提出基于超高次调谐频率的谐波滤波装置(HF-typefilter),用以解决工程实际中出现的问题.供轧钢供配电系统及谐波滤波装置设计制造参考.

Harmonic analysis and filtering for alternating current main drive loads

A new analysis and filtering method for the ultra-high order harmonic from the alternating current(AC)-direct current(DC)-AC main drive loads was proposed.The method was based on the practice and the new notation of the ARU(active rectifier unit) main transformer,and the specification of the integrated gate commutated thrusters(IGCT) and injection enhanced gate transistors(IEGT).By analyzing the features of the ultra-high order harmonic,the harmfulness to electrical equipment and manufacturing as well as the necessity to filter ultra-high order harmonic,indicates it is necessary to set up a higher frequency(HF)-type filter.This research serves as a reference for designing and manufacturing the HF-type filter in the power supply of rolling mills.