Advanced Driver Aid System for Energy Efficient Electric Bus Operation

Halmeaho, Teemu; Antila, Marko; Kataja, Jari; Silvonen, Paula; Pihlatie, Mikko

doi:10.5220/0005494600590064

Cited by 3 publications

(2 citation statements)

References 4 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The charging was perceived to be difficult for drivers, and the driving style affected the electricity consumption greatly. Driver assistance tools could be one solution to help drivers better operate electric buses [48].…”

Section: Experiences In Operating and Charging Electric Busesmentioning

confidence: 99%

Setting Up and Operating Electric City Buses in Harsh Winter Conditions

Vehviläinen¹,

Lavikka

Rantala

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

The city of Tampere in Finland aims to be carbon-neutral in 2030 and wanted to find out how the electrification of public transport would help achieve the climate goal. Research has covered topics related to electric buses, ranging from battery technologies to lifecycle assessment and cost analysis. However, less is known about electric city buses’ performance in cold climatic zones. This study collected and analysed weather and electric city bus data to understand the effects of temperature and weather conditions on the electric buses’ efficiency. Data were collected from four battery-electric buses and one hybrid bus as a reference. The buses were fast-charged at the market and slow-charged at the depot. The test route ran downtown. The study finds that the average energy consumption of the buses during winter was 40–45% higher than in summer (kWh/km). The effect of cabin cooling is minor compared to the cabin heating energy needs. The study also finds that infrastructure needs to have enough safety margins in case of faults and additional energy consumption in harsh weather conditions. In addition, appropriate training for operators, maintenance and other personnel is needed to avoid disturbances caused by charging and excessive energy consumption by driving style.

show abstract

Section: Experiences In Operating and Charging Electric Busesmentioning

confidence: 99%

Setting Up and Operating Electric City Buses in Harsh Winter Conditions

Vehviläinen¹,

Lavikka

Rantala

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The measured energy consumption of the auxiliary components was included in the simulation model, in order to distinguish between the propulsion power and the power consumed by auxiliaries. These auxiliary devices were air compressor, hydraulic pump of the power steering, and other minor auxiliaries [33]. The auxiliary devices were fed by a low-voltage DC-DC inverter connected to the high-voltage DC-bus.…”

Section: Electric City Bus Modelmentioning

confidence: 99%

Experimental validation of electric bus powertrain model under city driving cycles

Halmeaho

Rahkola

Tammi

et al. 2017

IET Electrical Systems in Transportation

Self Cite

View full text Add to dashboard Cite

Battery electric city bus model has been created and validated with measurement results from a full-scale city bus prototype. The model utilises multi-physics modelling approach with multiple-domains from friction-tyre and transmission model to electrical drive and a simplified battery model. For the electrical drive model, four approaches to model the losses were studied. The modelled and measured motor torque, speed, current in the battery and inverter, and the bus speed were compared under two bus line driving cycles using three payloads. The simulated results were in good agreement with the experimental results; the error between the simulated and measured energy consumptions was 1.5% with the most accurate model.

show abstract