Thanks a lot for putting in the effort and sharing your results! May I put the values and your results into the sumo documentation? (i'd add a new section "example configuration"). I think it would be very useful since your values vary quite a bit from the defaults.
cheers, Jakob Am Mo., 15. Nov. 2021 um 15:05 Uhr schrieb The div <[email protected]>: > This thread piqued my interest and I've been trying to model the real > world behaviour of my own EV (a Kia Soul EV 2020) - so I share this for > your amusement! > > I extracted a map of England from OSM and cut out an area for which I had > trip information. > - specifically some relatively local journeys I have made frequently and a > few longer distance journeys which were single data points. > > As noted in the thread the values appropriate to a bus considerably > overstate the radial drag coefficient for a car - this and the vehicle mass > had most impact on my modelling. > Whilst I modelled the exact routes I couldn't model traffic because of the > scale and complexity of the longer routes. (I did scale up the simulation > to increase congestion in the urban parts of the route and get overtaking > behaviour into the motorway route sections but ....) With those caveats I > believe SUMO provides very good correlation with my observed efficiency cf: > [image: image.png] > These routes are on UK roads which have general limits of 30/40mph in > urban areas and 70mph on motorways - the specific values having been set by > the OSM import. > The variation observed in the real world short routes appears to be > temperature related (eg morning vs afternoon). The single data point routes > were made in early August. > > I played with artificial routes of comparable distances but could not get > realistic or even proportionate efficiency outputs - those models always > produced much higher efficiency values (double) than can be achieved, a > realistic model encompassing junctions, roundabouts etc seems necessary. > > I settled on the following vType as being most representative of my > driving style - the relative efficiencies gave a comparable ratio to energy > consumed/recuperated as reported by my vehicle. > <vType id="soulEV65" minGap="2.50" maxSpeed="29.06" color="white" > accel="1.0" decel="1.0" sigma="0.0" emissionClass="Energy/unknown"> > <param key="airDragCoefficient" value="0.35"/> <!-- > https://www.evspecifications.com/en/model/e94fa0 --> > <param key="constantPowerIntake" value="100"/> <!-- observed > summer levels --> > <param key="frontSurfaceArea" value="2.6"/> <!-- computed > (ht-clearance) * width --> > <param key="has.battery.device" value="true"/> > <param key="internalMomentOfInertia" value="0.01"/> <!-- > guesstimate --> > <param key="maximumBatteryCapacity" value="64000"/> > <param key="maximumPower" value="150000"/> <!-- website as > above --> > <param key="propulsionEfficiency" value=".98"/> <!-- guesstimate > value providing closest match to observed --> > <param key="radialDragCoefficient" value="0.1"/> <!-- as above > --> > <param key="recuperationEfficiency" value=".96"/> <!-- as above > --> > <param key="rollDragCoefficient" value="0.01"/> <!-- as above > --> > <param key="stoppingTreshold" value="0.1"/> <!-- as above > --> > <param key="vehicleMass" value="1830"/> <!-- 1682kg > curb wt + my average 2 passengers / bags --> > </vType> > Whilst these figures model a Soul they should be easily tweaked for any of > the Hyundai/Kia EV range that basically use the same electric powertrain. > > cheers > Div > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user >
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