[efan]

this controller+motor seem to be a new development, and I dont know of anyone who has used it..but it may be worth checking them out.

http://shop.greenstage.co.nz/product...-motor-package

[njloof]

Originally Posted by Elegancec

Question about Solution 1 controller:

The website states 9-340V DC output.
The Kostov 11 Alpha wants 240V. So in my opinion the controller makes a pwm signal of it. So the battery system has to provide 250V, is this correct? So its not possible to use an 100V battery pack as an example?

You can certainly drive the Kostov with 100V, but your max RPM will be severely limited. Even if your battery system is rated at 250V, it will sag below 240V under load. Better to target 300V, the controller's pwm will limit to 240V if you instruct it to never exceed this voltage.

[somanywelps]

Originally Posted by Elegancec

Question about Solution 1 controller:

The website states 9-340V DC output.
The Kostov 11 Alpha wants 240V. So in my opinion the controller makes a pwm signal of it. So the battery system has to provide 250V, is this correct? So its not possible to use an 100V battery pack as an example?

The K11A is rated 250V. You're going to want to be sitting with a nominal of above 300V depending on the total kwh of the pack and the peak amperage draw.

No, 100V would be bad.

[njloof]

Originally Posted by efan

this controller+motor seem to be a new development, and I dont know of anyone who has used it..but it may be worth checking them out.

http://shop.greenstage.co.nz/product...-motor-package

Wow -- that deserves its own thread!

[albo2]

There is also this


http://www.ev-power.com.au/-95-EV-Mo...nduction-.html

[Elegancec]

Hello, this motor is too small, only 120Nm at 3000rpm this is 100km/h or 65mph.

[marc02228]

Hi Elegancec,

where are you from? I thought about the K11" alpha and soliton 1 in a Z3, too. But decided to put that stuff in a Miata due to the weight.

[Elegancec]

Hello Marc, Im from Germany, near Kiel.

At the moment I can not see another solution as the kostov motor as useful.
On next monday I have a date with our transport of ministry to make a check list.

The BLDC Motor from Scott has negative effects like noise and vibration and low efficiency at low speeds - I do not have a diagram or values for this until now. Also there is no EMV / EMC document available up to now. This could be a problem with the transport of ministry.

The kostov engine can be bought in the EU, so I would save the taxes for import.

[ruckus]

Originally Posted by efan

this controller+motor seem to be a new development, and I dont know of anyone who has used it..but it may be worth checking them out.

http://shop.greenstage.co.nz/product...-motor-package

Actually, for the $$$ you will spend on a failure-prone brushed dc motor you should consider a system without the Achilles heel. About the same price for a lot more performance.

[somanywelps]

Originally Posted by ruckus

Actually, for the $$$ you will spend on a failure-prone brushed dc motor you should consider a system without the Achilles heel. About the same price for a lot more performance.

The BLDCs don't have the performance and certainly don't have the price performance.

Also he linked to a BLDC, but there was some discussion about that motor/controller and not in a positive light.