beanland
Senior Member
- Location
- Vancouver, WA
For a typical PWM VFD, having snubbers on the IGBT to protect them from dV/dt problems is normal. But, what about the diode bridge on the line-side input? Are snubbers used to reduce power line noise and transients and prevent damage to the AC-to-DC diode bridge?
I ask because I was told by a reliable source that under-sizing of the line-side snubbers (filtering?) can lead to drive failure. I did a literature search but came up empty handed.
I ask because I was told by a reliable source that under-sizing of the line-side snubbers (filtering?) can lead to drive failure. I did a literature search but came up empty handed.