Bunter
Well-known member
The link below is to a graph showing the power consumption of the i3 at the 3 different charging rates using the standard 13 amp charger.
The car was put onto charge at roughly 20:00 in very similar states of charge. The graphs aren't 100 % accurate as far as time goes as graphing different nights data, over midnight with different data intervals is a swine to get right in Excel. For instance the low setting graph actually ends at 07:00 like the others but because it has less data points it looks like the data finishes at 05:00ish. But the amplitude is OK and it illustrates the difference between rates (est. 1.4 kw on low, 1.8 kw on red and 2.3 kw on max)
http://s561.photobucket.com/user/bunter1815/media/BMW%20i3/My%20i3/Power%20curves/ScreenShot2014-03-28at212506.png.html
Also the next link is to a graph of my first attempt to fit the charging rate to the available power from our solar PV array. The data is very spiky (we were at home doing domestics ) but you can see the step changes between charging rates as I try to use our surplus.
http://s561.photobucket.com/user/bunter1815/media/BMW%20i3/My%20i3/Power%20curves/ScreenShot2014-03-28at213021.png.html
Hope this is interesting for someone
Cheers
Bill
The car was put onto charge at roughly 20:00 in very similar states of charge. The graphs aren't 100 % accurate as far as time goes as graphing different nights data, over midnight with different data intervals is a swine to get right in Excel. For instance the low setting graph actually ends at 07:00 like the others but because it has less data points it looks like the data finishes at 05:00ish. But the amplitude is OK and it illustrates the difference between rates (est. 1.4 kw on low, 1.8 kw on red and 2.3 kw on max)
http://s561.photobucket.com/user/bunter1815/media/BMW%20i3/My%20i3/Power%20curves/ScreenShot2014-03-28at212506.png.html
Also the next link is to a graph of my first attempt to fit the charging rate to the available power from our solar PV array. The data is very spiky (we were at home doing domestics ) but you can see the step changes between charging rates as I try to use our surplus.
http://s561.photobucket.com/user/bunter1815/media/BMW%20i3/My%20i3/Power%20curves/ScreenShot2014-03-28at213021.png.html
Hope this is interesting for someone
Cheers
Bill