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 Post subject: Re: "Power availability display" drops a bit at high speeds
PostPosted: Tue May 09, 2017 10:28 am 
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RonDawg wrote:
It takes a considerable amount of time to hit 94 MPH in an eGolf ;) 0-30 they're great, then power starts dropping off particularly after you reach 60.



I think in my situation, pulling 3650 pounds up hill, 250 of it me, was already putting a pretty good electrical strain on the battery. I seem to recall I was showing somewhere between 6 and 7 on the gauge, and the instant miles/kwh gauge was reading between 1.2 to 1.6 miles per kwh on the Camarillo Grade. I'd say that was pretty taxing on the battery, before asking even more of it to pass a semi truck quickly, while going up hill. Max speed in the e-Golf is rated at 87 mph, if I recall correctly.

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 Post subject: Re: "Power availability display" drops a bit at high speeds
PostPosted: Tue May 09, 2017 11:12 am 
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RonDawg wrote:
It takes a considerable amount of time to hit 94 MPH in an eGolf ;)


Especially since they're limited to 85-ish MPH. *grin*


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 Post subject: Re: "Power availability display" drops a bit at high speeds
PostPosted: Tue May 09, 2017 11:25 am 
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Joined: Fri Mar 27, 2015 4:13 pm
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Location: Los Altos, CA
If the PWR needle is dropping after 10 seconds of continuously flooring the accelerator, it's probably hitting a thermal limit in the drive inverter, not the battery pack.

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 Post subject: Re: "Power availability display" drops a bit at high speeds
PostPosted: Tue May 09, 2017 12:57 pm 
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Joined: Sun Dec 20, 2015 7:32 pm
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miimura wrote:
If the PWR needle is dropping after 10 seconds of continuously flooring the accelerator, it's probably hitting a thermal limit in the drive inverter, not the battery pack.

I noticed after 3 seconds, I wasn't even off the on ramp yet.

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 Post subject: Re: "Power availability display" drops a bit at high speeds
PostPosted: Thu May 18, 2017 7:43 am 
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Joined: Sat Oct 03, 2015 7:27 pm
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Location: NJ
The needle starts moving immediately once you hit high draw. I see it on an uphill merge onto the highway. While things certainly can heat up, I'm going with a basic algorithm controlling the needle, not a thermal sensor.

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Still Plays With Cars - '15 e-golf, '04 V70R, '04 FFR, '01 360, '91 318is


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 Post subject: Re: "Power availability display" drops a bit at high speeds
PostPosted: Thu May 18, 2017 9:22 am 
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mfennell wrote:
The needle starts moving immediately once you hit high draw. I see it on an uphill merge onto the highway. While things certainly can heat up, I'm going with a basic algorithm controlling the needle, not a thermal sensor.


It could also be the electric motors windings heating up too, under such intense current flow and amperage, the wiring on the armature gets to an unsafe temperature. Tough to cool the windings.

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