宋唯宁,王宇拓,王林川,李学良,金媛媛.两电平和三电平VSC-HVDC系统在输电环节效率的分析与比较[J].电测与仪表,2015,52(4):. songweining,wangyutuo,wanglinchuan,lixueliang,jinyuanyuan.Analytical efficiency evaluation of two and three level VSC-HVDC transmission links[J].Electrical Measurement & Instrumentation,2015,52(4):.
两电平和三电平VSC-HVDC系统在输电环节效率的分析与比较
Analytical efficiency evaluation of two and three level VSC-HVDC transmission links
An analytical method to calculate the efficiency of VSC-HVDC links based on two-level and three-level VSCs is presented. The method uses the average and root mean square of the VSC converter current to estimate the conversion losses in the converters (conduction and switching losses). The remaining power losses (DC cable transmission losses due to , the losses in the coupling transformer, and AC harmonic filter losses) are evaluated using conventional well-known methods. Results obtained analytically are confirmed by digital simulations.