Semiconductor converters - part 2 : self - commutated semiconductor converters including direct d . c . converters 半导体变流器.第2部分:包括直流变流器的自换向半导体变流器
Semiconductor converters - part 2 : self - commutated semiconductor converters including direct d . c . converters 半导体变流器.第2部分:包括直流变流器的自转换半导体变流器
Semiconductor convertors ; general requirements and line commutated convertors ; part 1 - 2 : application guide 半导体变流器.第1部分:电网换相变流器和一般要求.第2节:应用导则
Semiconductor convertors ; general requirements and line commutated convertors ; part 1 - 3 : transformers and reactors 半导体变流器.第1部分:电网换相变流器和一般要求.第3节:变压器和电抗器
Semiconductor convertors ; general requirements and line commutated convertors ; part 1 - 1 : specifications of basic requirements 半导体变流器.电网换相变流器和一般要求.第1部分第1节:基本要求规范
Semiconductor convertors - part 2 : self - commutated semiconductor convertors including direct d . c . convertors iec 60146 - 2 : 1999 ; german version en 60146 - 2 : 2000 半导体变流器.第2部分:包括直流变流器的自整流半导体
Semiconductor convertors - general requirements and line commutated convertors - part 1 - 1 : specifications of basic requirements ; amendment 1 半导体变流器.电网换相变流器和一般要求.第1部分第1节:基本要求规范.补充件1
Semiconductor convertors - general requirements and line commutated convertors - self - commutated semiconductor converters including direct d . c . converters 半导体变流器.一般要求和线路换向变流器.包括直流变换器的自换向变流器
For some history reasons , our commercial banks have commutated lots of non - performing loans ( npl ) . these heavily affect the safety and the order of our banking 由于历史的原因，我国商业银行积累了大量不良贷款，严重影响了金融安全与金融秩序。
This paper uses " virtual neutral point method " to measure the " zero crossing " , then the soft deal " zero crossing " to get the six key position to commutate 本文采用虚拟中点的方法来识别反电势过零点，然后对过零点进行处理得到无刷电机换向的六个关键位置。
