Vector Group
Vector Group
(OP)
We are installing a 24 pulse 6.6kV VFD to drive a compressor motor and the input transformer to the VFD has the vector group Yd0.75d11.75d0.25d11.25. I've never seen anything like this before and wondered if anyone could shed some light on it. HV winding is star connected (6.6kV) with 4 delta secondaries (1907.2V) with shift angles of +22.42°, -7.46°, +7.46° and -22.42°.
I'm struggling to understand how we get these values for the phase shifts.
Regards
Paul
I'm struggling to understand how we get these values for the phase shifts.
Regards
Paul






RE: Vector Group
RE: Vector Group