As much as I know, all VFD are 3 phases connected (without central connection available) (some are only 2 phases, but there is still a full bridge rectifier)
The scheme you wanted to use will make a doubling of the voltage, most probably killing the VFD (about 640Vdc on the bus if main line is 230V). Le 21.11.2012 18:41, Przemek Klosowski a écrit : > On Wed, Nov 21, 2012 at 2:37 AM, Claude Froidevaux <men...@bluewin.ch>wrote: > >> If you put neutral on terminal L1 and phase on terminal 2 and 3, it >> will simply parallel 2 leg of the rectifier, this will change nothing. >> > Well, my original idea assumed that the 3phase input would have the Y / wye > configuration, so N would go to the center and L to the three phase inputs > tied together. If there is no center connection, just three phases L1/2/3, > then as you say it doesn't really make sense (two of the circuit legs are > paralleled but the return is over a single rectifier, which doesn't buy > anything. Are VFD inputs just using L1/2/3 without N? > > In any case, the real limitation is the DC bus loading due to single phase > going all the way to zero within each cycle, unlike 3 phase, so this is > moot. > ------------------------------------------------------------------------------ > Monitor your physical, virtual and cloud infrastructure from a single > web console. Get in-depth insight into apps, servers, databases, vmware, > SAP, cloud infrastructure, etc. Download 30-day Free Trial. > Pricing starts from $795 for 25 servers or applications! > http://p.sf.net/sfu/zoho_dev2dev_nov > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
