Looks like we/I actually did that! Because the simulations haven't run to 100% for me since lunch. And the site stopped responding an hour ago or so. Maybe he blocked my IP (lol).bearing said:We are going to overload his machine
Biff said:possiblyMiles said:Because there is only one winding symmetry?Biff said:Arlo asked why not have a 24tooth 22pole tooth design. That is a good magnetic design, I don't know why they wouldn't pick that combination.
The winding factor is slightly higher, for 2 layers. No prominent sub-harmonics, either. It's just the single symmetry that isn't good.bearing said:I have actually played with that configuration the last days as well!
It's a nice config.
Maybe it's not used so often because it has more poles than 24t20p, yet a (slightly) lower winding factor (from memory).
I don't know the new motor but it will not be to far off from that.sigimem said:What inductance has the new 28 magnet motor from phase to phase?
Is it still 8µH ? Was that measured Phase to Phase?
Jan, there is some more info on the "sale" thread: http://endless-sphere.com/forums/viewtopic.php?f=31&t=52083&start=125 - this is more the "development" typeJan Christian said:Is it possible to get the watercooled collossus these days?
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.
Main problem was how to put the HAL sensors inside motor, on the right spot, where signal is strong and clear.
Problem solved !!!
Plan is to have the hall option with v2.3 from lebowski but I do not plan to use it unless I find I need it. Inductance does mater and my hall sensors were lined up properly with my colossus and it would run on a 24 fet Chinese controller at very VERY low settings but still blow up randomly because they do not measure phase current and the pwm frequency is to low for the low inductance of colossus. I was going to stay out of this thread but you asked. So I can tell you the only success I had was with a more advanced controller like lebowski's or with external inductors. Remember I spent my own hard earned money to buy colossus and to buy all my controllers and mosfets and test equipment I have spent over 10,000 since getting the challenge of colossus. I'm broke because of it. But I call that the cost of my education. I just don't want to see others go down that road.sigimem said:On the for sale thread Acountant stated:
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.
Main problem was how to put the HAL sensors inside motor, on the right spot, where signal is strong and clear.
Problem solved !!!
What does that mean for the potential buyer? I am not keen to put my 18Fet infinion on this motor since Arlo blew up so many FETs.
Is the Hal Signal so important for the power satge? I thought the low inductance would be more of a problem. :?
Arlo are you running lebowskis chip with hal sensors or the version without them (after picking up rpm)?
Yes I got a Kelly given to me and it lasted 5min with the wheel in the air. It was the biggest explosion I have had in my shop.riba2233 said:Have you tried kelly? Or maybe spliting it into 6 phase?
They were thinking that they could call it a 400phase amp controller if they stuck 7 fets in parallel... Wrong! Lol
On this thread discussing them taken apart. http://www.endless-sphere.com/forums/viewtopic.php?p=429502#p429502Kelly isn't well funded bro, I don't think they even have their own engineers. It's a little shack in China assembling the through-hole parts by hand on boards that come in from a pick-n-place yard that handled the SMT assembly, then brushing over conformal coating and screwing them together in the extrusion. And a satellite office that answers phone calls from angry people who don't know how to get a working hall-combo, or want an RMA number to mail the controllers back that released the magic smoke. That is the whole company.
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.
You completely missed his point. The original version of this motor only worked with only worked with some Kelly controllers and DIY power stages, with the Lebowski brain. Now it will work with most controllers.What does that mean for the potential buyer? I am not keen to put my 18Fet infinion on this motor since Arlo blew up so many FETs.
I will belive it when I see it. They are blaming it on a hall miss alignment. Mine never had a hall misalignment and still blew up controllers if they changed the KV then maybe But still it would need to be about 50uH to allow most controllers to run it without problem so that would mean a lot less rpm per volt about 2.5-3x less...MitchJi said:Hi,
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.
You completely missed his point. The original version of this motor only worked with only worked with some Kelly controllers and DIY power stages, with the Lebowski brain. Now it will work with most controllers.What does that mean for the potential buyer? I am not keen to put my 18Fet infinion on this motor since Arlo blew up so many FETs.
So now instead of being limited to the mediocre Kelly controller you are free to choose an even more lame infinion controller if you want, but why would you want to do that? Now for example you can run it with a Sevcon, if you can afford to hire Arlo to program it for you.
Arlo1 said:I will belive it when I see it. They are blaming it on a hall miss alignment. Mine never had a hall misalignment and still blew up controllers if they changed the KV then maybe But still it would need to be about 50uH to allow most controllers to run it without problem so that would mean a lot less rpm per volt about 2.5-3x less...MitchJi said:Hi,
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.
You completely missed his point. The original version of this motor only worked with only worked with some Kelly controllers and DIY power stages, with the Lebowski brain. Now it will work with most controllers.What does that mean for the potential buyer? I am not keen to put my 18Fet infinion on this motor since Arlo blew up so many FETs.
So now instead of being limited to the mediocre Kelly controller you are free to choose an even more lame infinion controller if you want, but why would you want to do that? Now for example you can run it with a Sevcon, if you can afford to hire Arlo to program it for you.
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.What does that mean for the potential buyer? I am not keen to put my 18Fet infinion on this motor since Arlo blew up so many FETs.
You completely missed his point. The original version of this motor only worked with only worked with some Kelly controllers and DIY power stages, with the Lebowski brain. Now it will work with most controllers.
So now instead of being limited to the mediocre Kelly controller you are free to choose an even more lame infinion controller if you want, but why would you want to do that? Now for example you can run it with a Sevcon, if you can afford to hire Arlo to program it for you.
I second that.Arlo1 said:I will belive it when I see it. They are blaming it on a hall miss alignment. Mine never had a hall misalignment and still blew up controllers if they changed the KV then maybe But still it would need to be about 50uH to allow most controllers to run it without problem so that would mean a lot less rpm per volt about 2.5-3x less...MitchJi said:Hi,
5 years of developent, and now we have motor that can work well with "standard" Infineon controllers, with Kelly and with the most of other controllers.
You completely missed his point. The original version of this motor only worked with only worked with some Kelly controllers and DIY power stages, with the Lebowski brain. Now it will work with most controllers.What does that mean for the potential buyer? I am not keen to put my 18Fet infinion on this motor since Arlo blew up so many FETs.
So now instead of being limited to the mediocre Kelly controller you are free to choose an even more lame infinion controller if you want, but why would you want to do that? Now for example you can run it with a Sevcon, if you can afford to hire Arlo to program it for you.
Kelly does phase-current limiting. Infineon doesn't and blows up occasionally. Few 18fets died on my arms while trying to start, while moments before they were running fine.gwhy! said:infinion more lame than a kelly the only good thing about kellys is the current control throttle but there are plenty of bad points.. There is nothing wrong with infinions is just some people don't know how to use/program them.
circuit said:gwhy! said:infinion more lame than a kelly the only good thing about kellys is the current control throttle but there are plenty of bad points.. There is nothing wrong with infinions is just some people don't know how to use/program them.circuit said:Kelly does phase-current limiting. Infineon doesn't and blows up occasionally. Few 18fets died on my arms while trying to start, while moments before they were running fine.
Kelly has current/torque mode. Infineon doesn't and this leads to jerky commuting. I absolutely hate that.
Kelly has synchronous output stage. Infineon doesn't and this leads to more heat and more prone to blowups.
Kelly has potted PCB. Infineon doesn't ans is prone to vibration. Seen many with bloken-off CAPs.
And list goes on.
Kelly is not the best product out there. Probably not even mediocre. But infineon is just silly, even compared to Kelly. Just an amateurish DIY toy, like those designed for RC toys - you buy it, have a few flights, it puffs/blows up/etc. and you just buy a new one.