User avatar
EVDRIVER
Moderator
Posts: 6753
Joined: Sat Apr 24, 2010 7:51 am

Re: EV specific generator.

Thu Nov 01, 2012 10:01 pm

smkettner wrote:Just take the Prius or the Volt.

+200

User avatar
hill
Gold Member
Posts: 1870
Joined: Wed Apr 21, 2010 4:05 pm
Delivery Date: 27 Mar 2011
Leaf Number: 0659
Location: Lake Forest, CA

Re: EV specific generator.

Fri Nov 02, 2012 10:05 am

Lots of 120v gen set suggestions here. Problem is - gas to electricity generation is loss-ie enough. Drop from 240v to 120v and it's even worse. At 5 miles per kWh (at the wall) my best guess is that our 240v honda gen yields about 30mpg. It'd REALLY suck - even worse, if you were charging at 120v.

User avatar
LTLFTcomposite
Posts: 4780
Joined: Fri Apr 23, 2010 6:06 pm
Delivery Date: 10 Dec 2011
Leaf Number: 5926
Location: Central FL

Re: EV specific generator.

Fri Nov 02, 2012 2:30 pm

hill wrote:Lots of 120v gen set suggestions here. Problem is - gas to electricity generation is loss-ie enough. Drop from 240v to 120v and it's even worse. At 5 miles per kWh (at the wall) my best guess is that our 240v honda gen yields about 30mpg. It'd REALLY suck - even worse, if you were charging at 120v.
I think the product envisioned here would be 240v, 3.3kw, plus a little margin for loss. Make it as compact and lightweight as possible. It would only be for occasional/emergency use, some plan B peace of mind if public charging didn't work out, or there was a gap in facilities along your route you needed to fill.
LTL
White 2012 SV delivered 10 Dec 2011 returned 25 Nov 2014 replaced with stopgap ICE Sentra
[35 months] [35K miles] [9 Bars]
2013 Volt replaced after 36 months/30k miles with ICE Rogue
2016 SV-adjacent May 2016 lost 4th bar March 2018

User avatar
hill
Gold Member
Posts: 1870
Joined: Wed Apr 21, 2010 4:05 pm
Delivery Date: 27 Mar 2011
Leaf Number: 0659
Location: Lake Forest, CA

Re: EV specific generator.

Fri Nov 02, 2012 2:38 pm

Prior to buying our 5.5kW (100% duty cycle) 240v gen set, I searched for the smaller sized set up. In the U.S. - it doesn't exist - at least not a year ago. In the U.S. - 5.5kW was about as small as they go.

smkettner
Posts: 7489
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: EV specific generator.

Fri Nov 02, 2012 2:49 pm

Did you look at champion? or do you mean inverter style?

AC Load120/240V

http://www.championpowerequipment.com/generators/46554/
1 bar lost at 21,451 miles, 16 months.
2 bar lost at 35,339 miles, 25 months.
LEAF traded at 45,400 miles for a RAV4-EV
RAV4 traded in for I-Pace Dec 2018

User avatar
dgpcolorado
Posts: 3145
Joined: Sat Aug 20, 2011 1:56 pm
Delivery Date: 15 Dec 2011
Location: The Western Slope, Colorado

Re: EV specific generator.

Fri Nov 02, 2012 4:27 pm

smkettner wrote:Just take the Prius or the Volt.
That's not very practical when the purpose of the trip is to get the LEAF to the Nissan dealer...

I carry a Honda EU2000i for long trips over the mountains. Slow is better than stuck.
Blue 2012 SV Dec 2011 to Feb 2016
CPO 2014 Tesla S60 Mar 2016
One car, no ICE, at last!
Tesla Referral Code

User avatar
LTLFTcomposite
Posts: 4780
Joined: Fri Apr 23, 2010 6:06 pm
Delivery Date: 10 Dec 2011
Leaf Number: 5926
Location: Central FL

Re: EV specific generator.

Fri Nov 02, 2012 5:31 pm

Does it really need to be "inverter style" ? Isn't the purpose of inverter generators to allow the engine to run at variable speeds as the load varies? You don't really need that for this EV-specific generator. Just a nice constant 3.3kw at 240v. Not too big, not too heavy, and not too loud.
Last edited by LTLFTcomposite on Fri Nov 02, 2012 6:25 pm, edited 1 time in total.
LTL
White 2012 SV delivered 10 Dec 2011 returned 25 Nov 2014 replaced with stopgap ICE Sentra
[35 months] [35K miles] [9 Bars]
2013 Volt replaced after 36 months/30k miles with ICE Rogue
2016 SV-adjacent May 2016 lost 4th bar March 2018

User avatar
ebill3
Posts: 1400
Joined: Fri May 27, 2011 1:23 pm
Delivery Date: 15 Sep 2011
Leaf Number: 7964
Location: Puyallup WA

Re: EV specific generator.

Fri Nov 02, 2012 5:50 pm

smkettner wrote:Did you look at champion? or do you mean inverter style?

AC Load120/240V

http://www.championpowerequipment.com/generators/46554/
Boy, that unit has a suspicious resemblance to the Harbor Freight unit, and they are both $330.
http://www.harborfreight.com/engines-ge ... 69728.html

Either would do the job as inverter is not required. Probably not top quality, but OK or occasional use where reliability is not a prime concern. But, at ~100 lbs, still a bit to lift over the trunk lip, at least for me.
All electric - red LEAF, green Tesla S. No ICE.

smkettner
Posts: 7489
Joined: Mon Aug 09, 2010 10:13 pm
Delivery Date: 26 Feb 2014
Location: Orange County, CA

Re: EV specific generator.

Fri Nov 02, 2012 6:16 pm

I think you will want 4000 to 5000w rated anyway if you expect to charge at the max.
Need V1 upgrade to go sub 4000w.
1 bar lost at 21,451 miles, 16 months.
2 bar lost at 35,339 miles, 25 months.
LEAF traded at 45,400 miles for a RAV4-EV
RAV4 traded in for I-Pace Dec 2018

User avatar
TonyWilliams
Posts: 10091
Joined: Sat Feb 19, 2011 1:48 am
Location: San Diego
Contact: Website

Re: EV specific generator.

Fri Nov 02, 2012 8:16 pm

smkettner wrote:I think you will want 4000 to 5000w rated anyway if you expect to charge at the max.
Need V1 upgrade to go sub 4000w.
Honda EU6500is = 120/240V 6500W max., 5500W rated (240 volts @ 22.9 amps.)

A 3.3kW charger LEAF needs 240v/16a rated continuous, and the above is plenty. But it is too small for the many future 6.6kW charger EV's, which need 32 amps, and the Rav4 needs 40 amps.

Smaller ones don't normally have 240 volts, which is a huge limitation. The LEAF charger will only use 12 amps on 120v.

Honda EB1000 with electric start is close for Rav4, and perfect for 6.6kW charging: 120/240V 10000W max. (83.8/41.6A) 9000W rated (75/37.5A)
Last edited by TonyWilliams on Fri Nov 02, 2012 8:42 pm, edited 1 time in total.

Return to “Engineering”