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Re: [sumo-user] EV battery consumption values
Apologies for my classically anglo-centric assumption - in my defence the consumption reported was absurd! :)

I hadn't realised the EV model had been added to Sumo and am very interested in this - I had a look at the model behaviour using my own vehicle (soul 2020). The consumption values were similarly absurd and a sensitivity analysis indicated that vehicleMass, radialDragCoefficient and the efficiency values have most impact on the model.

For my Soul EV, against a round trip school run for which I have consistent consumption values, the following gives me model output comparable to real life.

<vType id="soulEV" accel="1.0" decel="1.0" length="4.2" maxSpeed="167.0" sigma="0.0" minGap="2.5" color="1,1,1">
        <param key="has.battery.device" value="true"/>
        <param key="maximumBatteryCapacity" value="64000"/>
        <param key="maximumPower" value="150000"/>
<!-- wt = 1682kg - payload = 498kg = all passengers - so assume 200kg for 2 passengers + kit -->
        <param key="vehicleMass" value="1882"/>
<!-- height = 1.600, width = 1.800, clearance = .155  front SA = 1.800*(1.600-0.155) -->
        <param key="frontSurfaceArea" value="2.6"/>
        <param key="airDragCoefficient" value="0.35"/>
        <param key="internalMomentOfInertia" value="0.01"/>
        <param key="radialDragCoefficient" value="0.1"/>
        <param key="rollDragCoefficient" value="0.01"/>
        <param key="constantPowerIntake" value="100"/>
        <param key="propulsionEfficiency" value=".98"/>
        <param key="recuperationEfficiency" value=".96"/>
        <param key="stoppingTreshold" value="0.1"/>
        <param key="emissionClass" value="Energy/unknown"/>
    </vType>

I suggest you look at reducing the radialDragCoefficient as I'm pretty sure that would be much higher for a bus than a Model 3!  I have not yet looked at how these parameters fit with longer/faster (non-urban) routes.

I'm interested in incorporating temperature impacts into the sumo model - much more significant for an ev - if no-one is working on this I'd probably start with the data from https://www.geotab.com/blog/ev-range/  and apply this to the energy consumption/recuperation.

The question is where the temperature value should be set in sumo - it feels like setting the value against an edge would be technically accurate but too granular - whilst setting it for a simulation run may be too inflexible - any thoughts?

cheers
div



‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, October 1st, 2021 at 07:34, Iñaki Cejudo Fresnadillo via sumo-user <sumo-user@xxxxxxxxxxx> wrote:
Yes, sorry, it's a 50 kWh battery consumed almost entirely in 100 km. 

El jue, 30 sept 2021 a las 18:09, Jakob Erdmann (<namdre.sumo@xxxxxxxxx>) escribió:
maybe...

Am Do., 30. Sept. 2021 um 18:08 Uhr schrieb Jakob Erdmann <namdre.sumo@xxxxxxxxx>:
Spain uses ',' as decimal separator so the '.' in 50.000 is for digit grouping.


Am Do., 30. Sept. 2021 um 17:42 Uhr schrieb The div <div@xxxxxxxx>:
Not surprising that a 50 Wh battery is consumed quickly - I don't believe any current (sic) EV has a capacity that low - try 50 kWh :)






-------- Original Message --------
On 30 Sep 2021, 15:45, < Pablo.AlvarezLopez@xxxxxx> wrote:

Hi.

 

In the paper Kurczveil, T., López, P.A., Schnieder, E., Implementation of an Energy Model and a Charging Infrastructure in SUMO you have an example with an electric bus. Use these parameters in your vehicle and check if the result is coherent with your expected result. If not, send me network and route file.

 

Regards

 

Von: sumo-user <sumo-user-bounces@xxxxxxxxxxx> Im Auftrag von Iñaki Cejudo Fresnadillo via sumo-user
Gesendet: Donnerstag, 30. September 2021 14:23
Cc: Iñaki Cejudo Fresnadillo <icejudo@xxxxxxxxxxxxx>
Betreff: [sumo-user] EV battery consumption values

 

I’m working on a simulation of an electric vehicle going from one city to another. Total distance is 100km and the vehicle has the following parameters:

- max speed (m/s) = 33.3 m/s (100 km/h)

- speedFactor = 1

- has.battery.device = true

- maximumBatteryCapacity (Wh) = 50.000 Wh.

- maximumPower (W) = 239.000 W.

- vehicleMass (Kg) = 1700 kg.

- frontSurfaceArea (m²) = 2.34 m².

- airDragCoefficient = 0.23.

- internalMomentOfInertia (kg m²) = 0.01 kg m².

- radialDragCoefficient = 0.5

- rollDragCoefficient = 0.01

- constantPowerIntake (W) = 50 W

- propulsionEfficiency = 0.9. .

- recuperationEfficiency = 0.9.

- stoppingTreshold (km/h) = 0.1.

- actualBatteryCapacity (Wh): 50.000.

Simulation has 3600 steps, step-length of 1 second.

The battery output says that the battery has been almost entirely consumed, and this doesn’t make any sense cause 50.000 Wh of battery capacity should last for around 300 km.

Is there any parameter I am misunderstanding or assigning an incorrect value?

I am trying to reproduce some features of Tesla Model 3 with maximumBaterryCapacity, maximumPower and vehicleMass.

 

--



Iñaki Cejudo Fresnadillo
Research Assistant | Ayudante de Investigación


+[34] 943 30 92 30

Intelligent Transport Systems and Engineering | Sistemas de Transporte Inteligentes e Ingeniería


  


member of: 


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--


Iñaki Cejudo Fresnadillo
Research Assistant | Ayudante de Investigación

+[34] 943 30 92 30
Intelligent Transport Systems and Engineering | Sistemas de Transporte Inteligentes e Ingeniería

  

member of: 

La información que contiene este mensaje y sus adjuntos son confidenciales y están dirigidos exclusivamente a sus destinatarios. Si recibe este mensaje por error, se ruega nos lo comunique y proceda a su borrado.

The information contained in this electronic message is intended only for the personal and confidential use of the recipients designated in the original message. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer.

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