1000kW交直交系统变流器设计主要问题分析

Analysis of Main Problems in Converter Design for 1000kW AC-DC-AC System

1000kw交直交系统在试验室已取得成功。本文主要分析变流器设计中的一些主要问题并介绍有关的试验结果。主要问题有:逆变器和四象限变流器的换流参数计算;变流器的损耗和Q值计算;吸收电路的形式和设计依据;对换流失败的保护。最后提出串联器件的技术要求。

The laboratory test with 1000kW AC-DC-AC system was successful. Some main problems in the converter design are analysed and relevant results of experiment are introduced in this paper. The main problems are: the calculation of commutating parameter in the inverter and the four-quadrant converter; the losses in the converter and the calculation of Q value; the form and the design basis of the selected Snubber; protection against commutating faiture. At last, the requirements for the elements used in the series connection are put forward.