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Study on real-world performance of electric two-wheelers and three-wheelers under heterogeneous traffic conditions: a case study in West Bengal State, India

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Abstract

The present study discusses on real-world operating scenario of widely accepted electric vehicles — electric two-wheelers and three-wheelers. Use of electric three-wheelers remains majorly restricted to developing regions, whereas electric two-wheelers have a widespread stakeholder base. However, the majority of these vehicles demonstrate maximum speed of 25 km/h, constrained by design specifications. Study revealed that electric two-wheelers and three-wheelers exhibited specific energy consumption of 28.67 Wh/pkm and 43.25 Wh/pkm, respectively, based on a case study for the state of West Bengal, India. Predominant charging regime of target vehicles from domestic source, powered by nationalized grid, leads to high use-phase emission, on a plant-to-wheel approach. Results on traffic dynamic behavior revealed that target electric variants pose to be potential candidates augmenting congestion effect on already running conventional traffic. Hence, two scenarios need to be addressed: (a) regulating the operation of low-speed electric vehicles and (b) optimizing the parameters governing use-phase emissions.

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Data availability

The datasets generated during the present study are not available publicly, but are available with the corresponding author, on request.

Abbreviations

2W:

Two-wheeler

3W:

Three-wheeler

BEV:

Battery electric vehicle

BM:

Build margin

CFGL :

Grid transmission loss correction factor

CFCL :

Charging losses correction factor

CM:

Combined margin

CMR :

Combined margin realistic

CKm:

Circuit kilometres

D :

Distance covered in km

e2W:

Electric two-wheeler

e3W:

Electric three-wheeler

Ebus:

Electric bus

GEF:

Grid emission factor

pkm:

Passenger-kilometer

PTW:

Plant-to-wheel

T&D :

Transmission and distribution

VEF:

Vehicle emission factor

VEFc :

Vehicle emission factor for conventional vehicles in gCO2/km

VEFe :

CO2 emission factor of EVs in gCO2/km

WA:

Simple weighted average

C :

Unit cost of the energy type in INR

c :

Specific energy cost in INR/pkm

E :

Energy consumption of a vehicle type in Wh

ϵ :

Specific energy consumption (Wh/pkm)

ϵ m :

Specific energy consumption of vehicle type m (Wh/pkm)

e g :

Fuel emission factor in gCO2/kWh

ϵ cs :

Specific energy consumption of conventional scooter

ϵ cm :

Specific energy consumption of conventional motorcycle

ϵ 2e :

Specific energy consumption of e2W

ϵ a :

Specific energy consumption of 3W

ϵ ad :

Specific energy consumption of 3W (diesel)

ϵ 3e :

Specific energy consumption of e3W

EU:

Electric utility

F c :

Fuel consumption of small car in ml/km

F 2w :

Fuel consumption of 2W in ml/km

L :

T&D Loss expressed in %

L m :

Levelized T&D loss in %

p :

Equivalent number of passengers

R :

Coefficient of variance

r :

Coefficient of roughness

S ec :

Per capita CO2 emission in gCO2/pkm

S ee :

Per capita CO2 emission of EVs in gCO2/pkm

T mo :

Moving time in minutes

T i :

Total idling time in minutes

V c :

Velocity of small car in km/h

V 2w :

Velocity of 2W

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Funding

The authors declare that no funds, grants or other support were received during the preparation of this manuscript.

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Authors

Contributions

DM contributed to conceptualization, methodology, investigation and writing—original draft preparation. AD contributed to data curation and investigation. TJ contributed to conceptualization, supervision and reviewing.

Corresponding author

Correspondence to Deepanjan Majumdar.

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The authors have no relevant financial and non-financial interests to disclose.

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Majumdar, D., Dutta, A. & Jash, T. Study on real-world performance of electric two-wheelers and three-wheelers under heterogeneous traffic conditions: a case study in West Bengal State, India. Clean Techn Environ Policy 24, 2419–2439 (2022). https://doi.org/10.1007/s10098-022-02324-y

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  • DOI: https://doi.org/10.1007/s10098-022-02324-y

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