请教

爱城电工

前几天在工作中碰到一个问题，一直没有解决，有哪位对 IGBT ,SCR , 以及PWM调节技术比较强的网友探讨一下，由于图纸太大，所以不能上传。

MrElectrician

I think you are talking about control system for VFD's, about the pulse controls for inverters and rectifiers within the VFD's power cells...
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0 E3 W! g1 w& I+ N1 R1 Y3 ?3 GIf yes, I would say it is way too complicate for normal maintenance electricians, even for general electrical engineers as well.
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8 _# t, {/ d! O* k) g: ^If you like to know more, I would suggest you to read a ABB or Siemens VFDs manuals over 1000HP, they do have very detail explaination. The basic princial is the same as normal VFD's, but communication speed is very fast and using fiber cables.

Sorry I could NOT explain it very well just in few sentences.

爱城电工

Thanks for your fast reply. the manuals you talked about actually doesn't help , it's too simple, even our engineer either.

shenyang-china

IGBT and SCR 被应用在变频器的功率电路中,直流变交流，PWM的相应参数也可以设置，Lz是指哪方面的应用，有图纸会更清楚些方便讨论．

爱城电工

你说的对，但图纸太多，太大，我也不会贴图，等我有机会自己画个见图，再请教。