![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEinyM4CycxHQAzum8S60kHuiW0KVqb5Ayofl07WIci63hjs_D3A4XVqFZFyRX5QoqIlnjATeVI_UBtfe7PiyJ3IU4cwIVKrjJ67EkOeT7ExTgRR9_OfyxEzi6Rs2xKJ-0-_ZWmz4hb6V50/s320/RPM+Torque+Power+scatter.jpg)
(Power is 10x.) The above data was captured from the Danfoss VFD.
This would indicate that the Dyno run yesterday did not reach peak power / torque.50km/hr = 2100 RPM. The motor torque from the dyno plot at 50km/hr would be 2100*.323/5.125=132Nm. This (very roughly) corresponds to the scatter plot at that RPM.
The dyno plot can be for all intents ignored unfortunately. I will go and see them and see if they can do plots at multiple single speeds.
1 comment:
Hi Mal,
Your scatter chart shows a flat top or constant power output above a certain RPM and torque rolling off after a certain RPM. This is what one would expect to see.
I would question the dyno graph too!
Bill in Oregon
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