This page has only limited features, please log in for full access.
At present, the prevalence of electric vehicles is increasing continuously. In particular, there are promising applications for commercial vehicles transferring from conventional to full electric, due to lower operating costs and stricter emission regulations. Thus, cost analysis from the fleet perspective becomes important. The study of cost competitiveness of different drivetrain designs is necessary to evaluate the fleet cost variance for different degrees of electrical machine commonality. This paper presents a methodology to find a preliminary powertrain design that minimizes the Total Cost of Ownership (TCO) for an entire fleet of electric commercial vehicles while fulfilling the performance requirements of each vehicle type. This methodology is based on scalable electric machine models, and particle swarm is used as the main optimization algorithm. The results show that the total cost penalty incurred when sharing the same electrical machine is small, therefore, there is a cost saving potential in higher degrees of electrical machine commonality.
Meng Lu; Gabriel Domingues-Olavarría; Francisco Márquez-Fernández; Pontus Fyhr; Mats Alaküla. Electric Drivetrain Optimization for a Commercial Fleet with Different Degrees of Electrical Machine Commonality. Energies 2021, 14, 2989 .
AMA StyleMeng Lu, Gabriel Domingues-Olavarría, Francisco Márquez-Fernández, Pontus Fyhr, Mats Alaküla. Electric Drivetrain Optimization for a Commercial Fleet with Different Degrees of Electrical Machine Commonality. Energies. 2021; 14 (11):2989.
Chicago/Turabian StyleMeng Lu; Gabriel Domingues-Olavarría; Francisco Márquez-Fernández; Pontus Fyhr; Mats Alaküla. 2021. "Electric Drivetrain Optimization for a Commercial Fleet with Different Degrees of Electrical Machine Commonality." Energies 14, no. 11: 2989.
Electric road systems (ERS) are technologies that allow to charge electric vehicles (EVs) while they are driving. This makes it possible to reduce the installed battery capacity and therefore the weight and cost of the vehicle. However, while the vehicle is charging from the ERS a protective earth connection cannot be ensured, which introduces new isolation challenges in the design of the electric powertrain. This work presents, and explains the working principle of three different powertrain configurations specially designed to operate in conjunction of an ERS. These powertrain concepts differ from each other on whether or not an isolated DC-DC converter is used and in the number of traction electrical machines and converters. As case study two different applications are considered, a city bus and a heavy truck and the conclusions regarding energy consumption are cost are summarized.
Anton Karlsson; Gabriel Domingues-Olavarria; Mats Alakula. Alternative EV powertrain topologies designed for operation in a conductive electric road system. 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) 2018, 1 -6.
AMA StyleAnton Karlsson, Gabriel Domingues-Olavarria, Mats Alakula. Alternative EV powertrain topologies designed for operation in a conductive electric road system. 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). 2018; ():1-6.
Chicago/Turabian StyleAnton Karlsson; Gabriel Domingues-Olavarria; Mats Alakula. 2018. "Alternative EV powertrain topologies designed for operation in a conductive electric road system." 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) , no. : 1-6.
This work presents a methodology for modeling, designing and scaling the electromagnetic, mechanical and thermal characteristics of the main components in an electric powertrain (excluding the battery) i.e. power electronics converter, electrical machine and mechanical transmission. Additionally, a framework for estimating the cost of these components is described. This framework takes into consideration not only the material cost but also all major manufacturing steps required for the production of a component and their dependency on expected production volumes. Moreover, a procedure to optimize the design of an electric powertrain, taking advantage of the aforementioned models, is proposed. Finally, the powertrain for a passenger electric vehicle is optimized using the proposed methodology and the results are compared in terms of electrical machine topology, powertrain concepts, cost, weight, gear ratio(s) in the transmission and overloading capabilities.
Gabriel Domingues-Olavarria; Francisco J. Marquez-Fernandez; Pontus Fyhr; Avo Reinap; Mats Andersson; Mats Alakula. Optimization of Electric Powertrains Based on Scalable Cost and Performance Models. IEEE Transactions on Industry Applications 2018, 55, 751 -764.
AMA StyleGabriel Domingues-Olavarria, Francisco J. Marquez-Fernandez, Pontus Fyhr, Avo Reinap, Mats Andersson, Mats Alakula. Optimization of Electric Powertrains Based on Scalable Cost and Performance Models. IEEE Transactions on Industry Applications. 2018; 55 (1):751-764.
Chicago/Turabian StyleGabriel Domingues-Olavarria; Francisco J. Marquez-Fernandez; Pontus Fyhr; Avo Reinap; Mats Andersson; Mats Alakula. 2018. "Optimization of Electric Powertrains Based on Scalable Cost and Performance Models." IEEE Transactions on Industry Applications 55, no. 1: 751-764.
Electric Road Systems (ERS) have emerged as an alternative to deal with the main drawbacks that battery electric vehicles present (i.e., higher cost, short driving range, long charging times, etc.). This paper analyses the societal cost of electrifying all road transport in Denmark under four different scenarios. The first scenario considered in this study is based on today’s approach of having electric vehicles with high battery capacity and fast charging stations, the remaining scenarios study the cost of implementing different ERS at a national level. The results clearly show the benefits of implementing road bound electric road solutions that can be used both by commercial and passenger vehicles.
Gabriel Domingues-Olavarría; Francisco J. Marquez-Fernandez; Pontus Fyhr; Avo Reinap; Mats Alakula. Electric Roads: Analyzing the Societal Cost of Electrifying All Danish Road Transport. World Electric Vehicle Journal 2018, 9, 9 .
AMA StyleGabriel Domingues-Olavarría, Francisco J. Marquez-Fernandez, Pontus Fyhr, Avo Reinap, Mats Alakula. Electric Roads: Analyzing the Societal Cost of Electrifying All Danish Road Transport. World Electric Vehicle Journal. 2018; 9 (1):9.
Chicago/Turabian StyleGabriel Domingues-Olavarría; Francisco J. Marquez-Fernandez; Pontus Fyhr; Avo Reinap; Mats Alakula. 2018. "Electric Roads: Analyzing the Societal Cost of Electrifying All Danish Road Transport." World Electric Vehicle Journal 9, no. 1: 9.
Electric Road Systems (ERS) are analysed here as a feasible solution for the electrification of heavy traffic, where the predominant approach for passenger cars based only on batteries and a network of fast-charging stations combined with slower overnight charging becomes unrealistic due to the large amount of batteries required. Nonetheless, this study shows that in most cases, building such ERS so that they can be used by both types of vehicles results in added value to society.
Francisco J. Marquez-Fernandez; Gabriel Domingues-Olavarria; Lars Lindgren; Mats Alakula. Electric roads: The importance of sharing the infrastructure among different vehicle types. 2017 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific) 2017, 1 -6.
AMA StyleFrancisco J. Marquez-Fernandez, Gabriel Domingues-Olavarria, Lars Lindgren, Mats Alakula. Electric roads: The importance of sharing the infrastructure among different vehicle types. 2017 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific). 2017; ():1-6.
Chicago/Turabian StyleFrancisco J. Marquez-Fernandez; Gabriel Domingues-Olavarria; Lars Lindgren; Mats Alakula. 2017. "Electric roads: The importance of sharing the infrastructure among different vehicle types." 2017 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific) , no. : 1-6.
The unified knowledge on power converter design and manufacturing technology establishes a powerful tool, where the cost and topology realization can be analyzed simultaneously. This paper collects the design practice and cost estimation of various components in a power electronics converter and unites that to a choice of the assembling and manufacturing processes and resulting cost of the complete converter. The outcome of this work specifies the power converter at predefined power level and cooling condition and demonstrates the cost drivers of the complete unit depending on production volumes. As a case study, the cost of an inverter for a full electric or hybrid vehicle application is estimated and the results are compared with figures available in the literature, yielding the conclusion that the validity of such figures is highly dependent on production volumes and power levels. The essence of this paper is a set of general, reliable, and fast design models and production charts, in accordance with realistic cost estimates for the sake of system optimization and development of cost effective electric drives from small series to large volumes.
Gabriel Domingues-Olavarria; Pontus Fyhr; Avo Reinap; Mats Andersson; Mats Alakula. From Chip to Converter: A Complete Cost Model for Power Electronics Converters. IEEE Transactions on Power Electronics 2017, 32, 8681 -8692.
AMA StyleGabriel Domingues-Olavarria, Pontus Fyhr, Avo Reinap, Mats Andersson, Mats Alakula. From Chip to Converter: A Complete Cost Model for Power Electronics Converters. IEEE Transactions on Power Electronics. 2017; 32 (11):8681-8692.
Chicago/Turabian StyleGabriel Domingues-Olavarria; Pontus Fyhr; Avo Reinap; Mats Andersson; Mats Alakula. 2017. "From Chip to Converter: A Complete Cost Model for Power Electronics Converters." IEEE Transactions on Power Electronics 32, no. 11: 8681-8692.