Comparisons of Electric Vehicles Using Modular Cascade Machines System and Classical Single Drive Electric Machine

Li, Kaibo; Bouscayrol, Alain; Han, Shuai; Cui, Shumei

doi:10.1109/tvt.2017.2743216

Cited by 29 publications

(12 citation statements)

References 32 publications

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“…Another use case for a modular approach is electric vehicles. While multi-motor drive systems have already been used in this context, the focus in the literature to date has mainly been on torque distribution [41] and energy management optimization [42].…”

Section: Torsional Vibrationsmentioning

confidence: 99%

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

Verkroost

Sergeant

et al. 2022

Machines

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In order to meet requirements in machine design, modularity is often brought forward as a way to cope with load variations and adaptability of the architecture. The considered modular drivetrain consists of several identical induction motors, called motor modules, in cascade on the same shaft. However, implementing a modular drivetrain design evidently has an impact on the performance of the application. New opportunities may arise, such as improved motion dynamics and tolerance to failures. However, on other aspects, e.g., torsional vibrations and synchronization, performance can be negatively influenced. By adding multiple actuators in the drivetrain, additional sources of torque ripple are introduced. The aim of this article is first to investigate the impact of using a modular design on the torsional vibrations in the drivetrain, and second to mitigate these vibrations via an interleaving strategy of the PWM (pulse-width modulation) signals. Simulations and experimental data show that the modular setup requires a proper control strategy in order to ensure that the torsional vibrations in the system remain within the range of a traditional non-modular design. Interleaving of the PWM carrier waveforms in the different motor modules is proposed as a control method to mitigate the torsional vibrations identified in the modular drivetrain. This strategy results in a drivetrain setup that slightly outperforms the benchmark in terms of torsional vibrations.

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Section: Torsional Vibrationsmentioning

confidence: 99%

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

Verkroost

Sergeant

et al. 2022

Machines

View full text Add to dashboard Cite

show abstract

“…Its configuration depends mainly on the layout of the electric drive system inside the vehicle. Electric drive systems can be categorized into single-motor drive (or lump e-drive), distributed-motor drive, and range-extended drive systems [46].…”

Section: Bev Powertrain Topologymentioning

confidence: 99%

Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles

et al. 2021

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This paper presents a review on the recent research and technical progress of electric motor systems and electric powertrains for new energy vehicles. Through the analysis and comparison of direct current motor, induction motor, and synchronous motor, it is found that permanent magnet synchronous motor has better overall performance; by comparison with converters with Si-based IGBTs, it is found converters with SiC MOSFETs show significantly higher efficiency and increase driving mileage per charge. In addition, the pros and cons of different control strategies and algorithms are demonstrated. Next, by comparing series, parallel, and power split hybrid powertrains, the series–parallel compound hybrid powertrains are found to provide better fuel economy. Different electric powertrains, hybrid powertrains, and range-extended electric systems are also detailed, and their advantages and disadvantages are described. Finally, the technology roadmap over the next 15 years is proposed regarding traction motor, power electronic converter and electric powertrain as well as the key materials and components at each time frame.

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“…A few publications considered optimizing the components' sizing for a single or a few topologies [10,15,16], often combined with the control optimization. Only limited research seems to focus specifically on the variation of the powertrain topology for all-electric vehicles; with limited examples that can be found either focused on hybrid electric vehicles [17][18][19][20] (e.g., where the focus is limited to the type of hybrid powertrain: series, parallel or power split) or the research is limited to the light-duty vehicle domain [21][22][23][24][25]. Therefore, there is little knowledge on the influence of topological design choices for full battery electric powertrains for heavy-duty trucks, which is crucial in order to evaluate the full potential of these type of vehicles.…”

Section: System-level Designmentioning

confidence: 99%

Electric Powertrain Topology Analysis and Design for Heavy-Duty Trucks

2020

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Powertrain system design optimization is an unexplored territory for battery electric trucks, which only recently have been seen as a feasible solution for sustainable road transport. To investigate the potential of these vehicles, in this paper, a variety of new battery electric powertrain topologies for heavy-duty trucks is studied. Thereby, topological design considerations are analyzed related to having: (a) a central or distributed drive system (individually-driven wheels); (b) a single or a multi-speed gearbox; and finally, (c) a single or multiple electric machines. For reasons of comparison, each concurrent powertrain topology is optimized using a bilevel optimization framework, incorporating both powertrain components and control design. The results show that the combined choice of powertrain topology and number of gears in the gearbox can result in a 5.6% total-cost-of-ownership variation of the vehicle and can, significantly, influence the optimal sizing of the electric machine(s). The lowest total-cost-of-ownership is achieved by a distributed topology with two electric machines and two two-speed gearboxes. Furthermore, results show that the largest average reduction in total-cost-of-ownership is achieved by choosing a distributed drive over a central drive topology (−1.0%); followed by using a two-speed gearbox over a single speed (−0.6%); and lastly, by using two electric machines over using one for the central drive topologies (−0.3%).

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Comparisons of Electric Vehicles Using Modular Cascade Machines System and Classical Single Drive Electric Machine

Cited by 29 publications

References 32 publications

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles

Electric Powertrain Topology Analysis and Design for Heavy-Duty Trucks

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