Doctorbass
100 GW
http://www.enstroj.si/Electric-products/emrax-motors.html
watercooled,
94% eff
40kW cont
11.8kg
Great!
Doc
watercooled,
94% eff
40kW cont
11.8kg
Great!
Doc
EMRAX Similar to a brushless AGNI motor
- Thread starter Doctorbass
- Start date
Farfle
100 kW
That is a a damn impressive motor... but 200-400 volts 
That's pretty crazy...
That's pretty crazy...
jonescg
100 MW
40 kW continuous is rather extraordinary. Considering an Agni has about 12 kW continuous, and about 25 kW peak...
grindz145
1 MW
A little bit higher voltage, and we can run IGBTs. Then were in business. They're selling them right now as "prototype". I wonder how they cost compared to an agni?
Nuts&Volts
100 W
I have been considering one of these guys in a motorcycle. They start at ~2300 euro for a air cooled, sensorless model. A liquid cooled motor with an encoder run around 3000 euro.
If the owner can really get 80kW and provide data proof I may actually get one, but I am still hesistant at the moment. 100HP at 28lbs sounds pretty awesome to me, but $4000 USD doesnt make me too excited.
If the owner can really get 80kW and provide data proof I may actually get one, but I am still hesistant at the moment. 100HP at 28lbs sounds pretty awesome to me, but $4000 USD doesnt make me too excited.
jonescg
100 MW
My twin Agni setup cost me a little over $3400 delivered (no thanks to the $500 customs clearing fee) and I measure peak power of about 47 kW at the shaft (factoring in the controller and motor efficiency). So two of these suckers would do some serious damage, if the numbers are correct.
Doctorbass
100 GW
I think that the advantages is that the brushless motor dont have the commutation problem that make spark turning into plasma when overpowering.
Also they have a higher RPM capability due to the fact that it's magnets that rotate.. not a heavy copper winding with comutator etc...
Also the watercooling is easyer to acheive because the only winding the motor have is static and the hose connection and pipes are easier to locate. Magnet the spining magnet dont really need to be cooled...
Finally, due to the no comutator and brush, there is more room to fit winding and magnet for the same volume!
I love brushless motor
!
Their cascaded sweep sound during accelation make them sound like a jet turbine!!
Cmon !!!.. we are in 2011... comutator/brush no longer should exist!!.. the mosfet price and technology always better over the time!
i'm sure we will see Luke come here and add his opinion..
Hey Luke.. when your next Brushless insane power BMX?? Instead of making half back flip.. it could be complet flip or.. back 360!
Doc
Also they have a higher RPM capability due to the fact that it's magnets that rotate.. not a heavy copper winding with comutator etc...
Also the watercooling is easyer to acheive because the only winding the motor have is static and the hose connection and pipes are easier to locate. Magnet the spining magnet dont really need to be cooled...
Finally, due to the no comutator and brush, there is more room to fit winding and magnet for the same volume!
I love brushless motor
!Their cascaded sweep sound during accelation make them sound like a jet turbine!!
Cmon !!!.. we are in 2011... comutator/brush no longer should exist!!.. the mosfet price and technology always better over the time!
i'm sure we will see Luke come here and add his opinion..
Hey Luke.. when your next Brushless insane power BMX??
Instead of making half back flip.. it could be complet flip or.. back 360! Doc
liveforphysics
100 TW
That motor looks like a beast.
The Sevcon EVO5 controller could run it to it's fullest too.
The Sevcon EVO5 controller could run it to it's fullest too.
Stevil_Knevil
10 kW
liveforphysics said:The Sevcon EVO5 controller could run it to it's fullest too.
Is Gen4 obsolete already
Damn, EV tech sure move fast ..figuratively AND literally.
grindz145
1 MW
liveforphysics said:That motor looks like a beast.
The Sevcon EVO5 controller could run it to it's fullest too.
Is there a 200+V sevcon controller?
Nuts&Volts
100 W
Yea Sevcon has Gen5, but its not readily available to consumers. I know a couple of companies that are using the Gen5.
The EMRAX developer is also trying to build his own controllers too
The EMRAX developer is also trying to build his own controllers too
Doctorbass
100 GW
this is their controller:
http://www.enstroj.si/Electric-products/controllers.html
their battery:
http://www.enstroj.si/Electric-products/batteries.html
Their BMS:
http://www.enstroj.si/Electric-products/balancers.html
and finally charger ( doc not availlable from now)
Doc
http://www.enstroj.si/Electric-products/controllers.html
their battery:
http://www.enstroj.si/Electric-products/batteries.html
Their BMS:
http://www.enstroj.si/Electric-products/balancers.html
and finally charger ( doc not availlable from now)
Doc
Doctorbass
100 GW
Guys from ELMOTO already spoted it!
http://www.elmoto.net/showthread.php?1034-Name-TBD-engineering-and-planning/page5
Doc
http://www.elmoto.net/showthread.php?1034-Name-TBD-engineering-and-planning/page5
Doc
liveforphysics
100 TW
Stevil_Knevil said:liveforphysics said:The Sevcon EVO5 controller could run it to it's fullest too.
Is Gen4 obsolete already
Gen 4 maxes out 116v input.
Evo 5 can't enable below 240v. Its also hugely bulky and uses igbts, and has lower phase current limits.
So, its not a replacement for the gen4s at all, just a product for folks who want to run a high voltage system. Most end up on slimey induction motors. Ewww. But it can also run PMAC just fine.
jonescg
100 MW
Hi everyone,
I wrote to EMRAX asking for a bit of in formation on their motors and their application to electric motorcycles. He sent through a bunch of attachments, mostly all of the controllers that would work with the EMRAX motor, of which there were many. I was most interested in the fact that you can make a double-bunger motor with a continuous shaft! This would make a lot of sense for an electric motorcycle, especially since you would be avoiding the huge radial load associated with two motors facing inwards (like the twin Agni arrangement).
Motors are 2590 Euro each, and the PikTronic controller is recommended (as testing has proven it capable) but costs 3790 Euro. Ouch!
The duplex shaft is an additional 190 Euro.
I wrote to EMRAX asking for a bit of in formation on their motors and their application to electric motorcycles. He sent through a bunch of attachments, mostly all of the controllers that would work with the EMRAX motor, of which there were many. I was most interested in the fact that you can make a double-bunger motor with a continuous shaft! This would make a lot of sense for an electric motorcycle, especially since you would be avoiding the huge radial load associated with two motors facing inwards (like the twin Agni arrangement).
Motors are 2590 Euro each, and the PikTronic controller is recommended (as testing has proven it capable) but costs 3790 Euro. Ouch!
The duplex shaft is an additional 190 Euro.
Attachments
Doctorbass
100 GW
jonescg said:
Great info!
That dual motor config will for sure be tested in teh TTXGP this year i guess
Doc
jonescg
100 MW
When two motors just isn't enough... go for THREE!!!
Hoooooeeeeeeee! This would haul some serious arse!! But how would you control them? These are wired in series, but that's a mighty big battery pack...
View attachment EMRAX3T_1_jul_2011-Model.pdf
Hoooooeeeeeeee! This would haul some serious arse!! But how would you control them? These are wired in series, but that's a mighty big battery pack...
View attachment EMRAX3T_1_jul_2011-Model.pdf
jonescg
100 MW
Hmmmm... :? Just realised that this is like one massive outrunner. With two or three of them rigged up on one shaft, it might not be such a hot idea having this spin to 4000 rpm between your legs without some kind of enclosure...
Nuts&Volts
100 W
Outrunner?? these are axial flux machines, just like the agni motors. The rotors (with magnets) is on the outside of the stator, but the case doesn't actually spin. I think the low RPM is simply due to the low turns of the winding and back emf.
jonescg
100 MW
http://www.enstroj.si/Electric-products/emrax-tests.html
Check out pics 2 and 7. It's an outrunner.
Check out pics 2 and 7. It's an outrunner.
TylerDurden
100 GW
Looks like it spins...Nuts&Volts said:
Nuts&Volts
100 W
http://www.enstroj.si/Videos/video-test-the-electric-motor-emrax-2-on-the-plane-ea1.html
this video show that only the center shaft spins (and the internal rotors). The shaft has a flat plate that attaches to the prop. Then the rear/case of the motor attaches to a mount. Trust me I have been reading about this motor a ton. I dont mean to argue...
When the motor was on the machine for testing I am guessing it was easier to just spin the whole thing.
this video show that only the center shaft spins (and the internal rotors). The shaft has a flat plate that attaches to the prop. Then the rear/case of the motor attaches to a mount. Trust me I have been reading about this motor a ton. I dont mean to argue...
When the motor was on the machine for testing I am guessing it was easier to just spin the whole thing.
bigmoose
1 MW
This pix makes me think it is an axial outrunner. See those nice little trapezoidal shapes on the side? Wonder what they pocket? Perhaps magnets. Perhaps 10 pole pairs.
jonescg
100 MW
Impossible to say from that video, but if you look at the way the dual or triplex motor is set up, the motors are joined by a fixture on the outer case which enters the next motor. Also, the mount they show is attached to the hub. If the outside didn't spin they could have attached it to that. Anyway, I have emailed Roman Susnik to find out from the horses mouth. I hope I'm wrong, but I'll let you all know regardless. I guess it makes sense in terms of air-cooling.
Nuts&Volts
100 W
Ok ill try one more. If you look at the encoder/resolver in the picture above you can see that it is internal to the shaft. If the motor is an outrunner and the case turns then the shaft will not turn and the encoder will not turn. You may say that the case turns and the encoder will just work in reverse (the encoder case, not its shaft turns), but then the encoder wire will turn and ruin everything. Make any sense??
Hopefully Roman will get back to you (he seems to keep very busy)
If you look at the encoder/resolver in the picture above you can see that it is internal to the shaft. If the motor is an outrunner and the case turns then the shaft will not turn and the encoder will not turn. You may say that the case turns and the encoder will just work in reverse (the encoder case, not its shaft turns), but then the encoder wire will turn and ruin everything. Make any sense??Hopefully Roman will get back to you (he seems to keep very busy)
