Hybrid city bus design evaluation using system level simulations

Halmeaho, Teemu; Rahkola, Pekka; Pippuri, Jenni; Tammi, Kari

doi:10.1109/isie.2014.6864866

Cited by 6 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hybrid buses let maximally reduce fuel consumption, which leads to the minimum emissions release to the atmosphere [5,[29][30][31]46]. Hybrid power plant in the bus allows saving up to 60% of energy as compared to diesel units, fuel consumption reduces up to 30%, and harmful emissions into the atmosphere diminish by 70%.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, hybrid technologies (the combination of an internal combustion engine (ICE) with an electric motor) and electrical technologies have been applied not only in passenger cars but also in buses. Hybrid buses let maximally reduce fuel consumption, which results in minimum emissions released to the atmosphere [5,25,[29][30][31][32]. Thus, hybrid power-unit saves up to 60% of energy in comparison with traditional diesel units (herewith consumption of fuel decreases to 30%), let alone the reduction of polluting emissions to the atmosphere by 70%.…”

Section: An Electrobus and A Hybrid Busmentioning

confidence: 99%

See 1 more Smart Citation

Energy saving technologies for urban bus transport

Hnatov¹,

Arhun²,

Ponikarovska³

2017

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

Reduction of non-renewable sources of energy and the ecological state of metropolises have become the cause of the search for optimal solutions for introduction of energyefficient and environmentally friendly technologies for urban bus transport, which is the purpose of this work. A review of environmentally friendly buses has shown that electric buses (electrobuses) are the most perspective. However, rapid replacement of all the buses with electrobuses is impossible because of their high cost. A comparative analysis of the operating costs of different types of buses of the same destination and class has been carried out in order to choose the optimal variant. Thus, one route of 4.23 km in length was chosen in Kharkiv (Ukraine). Experimental and calculated data showed that a minibus converted into an electrobus is the most acceptable means for urban passenger transportation. Ultra-capacitors are suggested as an energy source. The conceptual diagram of the model of such a bus is presented and the technical requirements for its components are determined. The data and proposals are useful for Ukraine and for countries with low economic development that cannot quickly replace old diesel buses with new, environmentally friendly, electrobuses. The results of this work are the basis for further research and development.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: An Electrobus and A Hybrid Busmentioning

confidence: 99%

Energy saving technologies for urban bus transport

Hnatov¹,

Arhun²,

Ponikarovska³

2017

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…In general, the aim was to produce the required deceleration by the regenerative braking. However, the magnitude of the regenerative braking was limited due to the effective powertrain capacity, tyre traction, and eventually the bus stability [36].…”

Section: Vehicle 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

“…To study and optimize the power consumption of the auxiliary subsystems a MATLAB Simulink model was developed. The dynamics of the bus has been modelled with Simscape (Halmeaho et al 2014). Main subsystems of the model are shown in Figure 5.…”

Section: Subsystems' Optimal Operationmentioning

confidence: 99%

Advanced Driver Aid System for Energy Efficient Electric Bus Operation

Halmeaho¹,

Antila²,

Kataja³

et al. 2015

Proceedings of the 1st International Conference on Vehicle Technology and Intelligent Transport Systems

Self Cite

View full text Add to dashboard Cite

Electric bus energy consumption is mainly due to the vehicle traction. Additionally, auxiliary systems such as cabin heating-cooling, air compressor, and power steering consume energy. One way to optimize the consumption is a Driver's Aid System (DAS). Based on the route information, DAS provides the driver the optimal driving suggestions, and simultaneously may optimise the energy use of auxiliary systems. These approaches are discussed in the paper. When the optimal air compressor operation was introduced, vehicle energy consumption was decreased 1.6 %. In addition to guiding the auxiliary devices and the driver, prospects of using DAS as a communication hub for managing buses, their charging and to share information for a bus operator are discussed.

show abstract

Hybrid city bus design evaluation using system level simulations

Cited by 6 publications

References 10 publications

Energy saving technologies for urban bus transport

Energy saving technologies for urban bus transport

Experimental validation of electric bus powertrain model under city driving cycles

Advanced Driver Aid System for Energy Efficient Electric Bus Operation

Contact Info

Product

Resources

About