Of course, if you use hall effect sensors it would be easier. Some folks add hall effect sensors to outrunners, it works fine.
On Fri, Feb 24, 2012 at 1:08 PM, andy pugh <bodge...@gmail.com> wrote: > On 24 February 2012 17:30, Lars Andersson <l...@larsandersson.com> wrote: > > > You can run a BLDC from a dumb fixed frequency three phase supply if only > > you can get it to spin in the first place. > > It will probably start from rest, certainly with a soft-starting VFD, > and will run synchronously. > However, running synchronously the phase lead will depend only on > load, and will be very small. The field will be almost 100% direct and > zero quadrature. > The effect of this is (I think) that the back-emf is very small, and > the current very high, for a given torque. > > -- > atp > The idea that there is no such thing as objective truth is, quite simply, > wrong. > > > ------------------------------------------------------------------------------ > Virtualization & Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
