100K / 60 * 2(poles) = electrical rpms. You'll need to run the pwm well over 100Khz to do this. The lowly dspic33f mc motor series will struggle to do this, let alone any additional processing.
I think there is something else though, it seems that a bldc has less torque from a fixed frequency than a sinusoidal wound 3 phase, but I don't really understand it completely. What is the reference to ancient times? On Fri, Feb 24, 2012 at 12:30 PM, Lars Andersson <l...@larsandersson.com>wrote: > While 100000 RPM is pretty impressive mechanicalvise, it is only 1700 Hz on > a two-pole motor. A BLDC is similar to a syncronous three phase motor that > was used much for really high power apps in ancient times, maybe even > today. > Typical example is a city water supply pump. They had to be brought up to > the right speed before being connected to the supply, they were not self > starting. > > 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. > > // Lars > > > > > ------------------------------------------------------------------------------ > 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
