Kostov 9" 220V HV motor? - Page 2 - DIY Electric Car Forums

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#11
01-19-2011, 09:59 AM
 Plamenator Senior Member Join Date: Mar 2009 Location: Sofia Posts: 181
Re: Kostov 9" 220V HV motor?

They are not on the site indeed.
We are starting the first batch for customers and stock in 10 days.
Until then I have some final tweaking to do so I expect proper drawing+performance curves to be uploaded in 2-3 weeks time.
A good battery for it will be something like 70x90Ah lithium cells to give 224V/~210kg/~8500\$/20kWh.

BTW, we should also have the new Soliton Junior in stock within a month.

#12
02-09-2011, 12:39 PM
 GerhardRP Administrator Join Date: Nov 2009 Posts: 542
Re: Kostov 9" 220V HV motor?

Quote:
 Originally Posted by Plamenator I expect proper drawing+performance curves to be uploaded in 2-3 weeks time.
The drawing is up twice, one following the pointer to the drawing, the other reached by following the performance curves link .
Gerhard
#13
06-30-2012, 09:33 AM
 kishor5466 Member Join Date: May 2012 Posts: 43
Re: Kostov 9" 220V HV motor?

Quote:
 Originally Posted by Bowser330 With the Soliton-1 controller 220KW(295HP) is possible for as long as the motor can hold 1000A at speed, however with 220V i imagine the 295HP would only be available up to 3500rpm or so...
Quote:
 Originally Posted by Bowser330 RoughRider may have been referencing my post above stating "295hp" 220V*1000A = 220kw = 295hp ~ 300hp
this really confuses me ,........
the power that the motor can supply is it not the nominal voltage of the battery*motor current??? or as it is calculated above as battery voltage* controller current???
if second one is the case then can't we use a high current rated controller with a low power rating (comparatively) to get high output power??
#14
06-30-2012, 05:27 PM
 somanywelps Senior Member Join Date: Jan 2012 Posts: 432
Re: Kostov 9" 220V HV motor?

Quote:
 Originally Posted by kishor5466 this really confuses me ,........ the power that the motor can supply is it not the nominal voltage of the battery*motor current??? or as it is calculated above as battery voltage* controller current??? if second one is the case then can't we use a high current rated controller with a low power rating (comparatively) to get high output power??

Also examine battery discharge rates.

Your last sentence doesn't make sense. "lower power rating" to get "high output power"
#15
08-15-2012, 07:00 PM
 Bowser330 Senior Member Join Date: Jun 2008 Posts: 1,683
Re: Kostov 9" 220V HV motor?

Quote:
 Originally Posted by kishor5466 this really confuses me ,........ the power that the motor can supply is it not the nominal voltage of the battery*motor current??? or as it is calculated above as battery voltage* controller current??? if second one is the case then can't we use a high current rated controller with a low power rating (comparatively) to get high output power??
Power in = Power out (minus losses) << This site has taught me that

So when I said 220V and 1000A i meant both at the motor. So 220V is your sagged pack voltage...meaning you motor will never be voltage(rpm) limited.

275V battery pack sagged 20% = 220V, so even when drawing 1000A, your pack voltage can be 220V.

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