Energy reduction by power loss minimisation through wheel torque allocation in electric vehicles: a simulation-based approach

Torinsson, Juliette; Jonasson, Mats; Yang, Derong; Jacobson, Bengt J H

doi:10.1080/00423114.2020.1858121

Cited by 30 publications

(20 citation statements)

References 16 publications

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“…In general, once sliding conditions occur, adhesion is never restored. This happens for any concave pressure distribution, provided that the total slip is less sufficiently smaller than the critical value 11 , and in particular σ ≤ σ cr /2. The central and bottom plots in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…( 12) is strictly concave and attains zero values at x = x L = a and x = x T = −a, which correspond to the leading and trailing edges, respectively. It should be observed that the contact shape (11) together with the pressure distribution (12) only satisfies Assumption 2.2 with the approximated nondimensional velocity field vt (x, s) = −V r (s)ê x , as in the classic brush theory. The limitation of such geometry are discussed in [17,18].…”

Section: Example 23 (Rectangular Contact Patch) For a Rectangular Con...mentioning

confidence: 99%

“…An analytical formulation of the driving resistance generated while cornering was proposed by Kobayashi et al [9,10] and validated experimentally using a real vehicle equipped with four in-wheel motors. In [11], Torinsson solved analytically and numerical an optimisation problem in which the slip losses were modelled by using linear tyre forces.…”

Section: Introductionmentioning

confidence: 99%

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Transient Tire Slip Losses Using the Brush Theory

Romano¹,

Timpone²,

Bruzelius³

et al. 2024

Tire Science and Technology

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Tire slip losses have been shown to have a significant impact on vehicle performance in terms of energy efficiency, thus requiring accurate studies. In this paper, the transient dissipation mechanisms connected to the presence of micro-sliding phenomena occurring at the tire–road interface are investigated analytically. The influence of a two-dimensional velocity field inside the contact patch is also considered in light of the new brush theory recently developed by the authors. Theoretical results align with findings already known from literature but suggest that the camber and turn spins contribute differently to the slip losses and should be regarded as separate entities when the camber angle is sufficiently large. The present work shows that an additional amount of power which relates to the initial sliding conditions is generated or lost during the unsteady-state maneuvers. A simple example is presented to illustrate the discrepancy between the microscopic and macroscopic approaches during a transient maneuver.

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Section: Resultsmentioning

confidence: 99%

Section: Example 23 (Rectangular Contact Patch) For a Rectangular Con...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transient Tire Slip Losses Using the Brush Theory

Romano¹,

Timpone²,

Bruzelius³

et al. 2024

Tire Science and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The safety factor in ABS, which avoids wheel locking, caused this time extension. However, the driver can still control the vehicle with actuators [31]. There is a relationship between braking force and wheel slip ratio in ABS [32], as shown in Figure 3.…”

Section: Resultsmentioning

confidence: 99%

Optimizing regenerative braking on electric vehicles using a model-based algorithm in the antilock braking system

Budijono

Sutantra

Pramono

2023

IJPEDS

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<span lang="EN-US">The regenerative braking effectiveness of electric vehicles (EVs), with <br /> 8-25% range, requires designers to produce better braking systems. The antilock braking system (ABS) was chosen because it offers various advantages, such as enhanced safety considerations, vehicle maneuverability, and so on. The measurement findings revealed that ABS took longer to stop the wheels with the same wheel rotation speed. Because of the lesser differentiation of magnetic flux to time, it created lower induced emf in the generator. ABS 50 Hz performance was 19.5% at 4500 pm, whereas hydraulic brake performance was 21% at the same speed. ABS used model-based algorithms (MBAs) to boost the friction frequency with the wheels from 10 to 50 Hz. As the frequency increased, the ABS graph approached the hydraulic graph, and the ABS performance improved. Although ABS loses to hydraulics in stopping wheel rotation, it gains in saved energy and battery temperature. Longer wheel stop-times allow the rotational kinetic energy of the wheel more time to be converted into electricity.</span>

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“…This multi-motor configuration offers various advantages. It can enhance energy efficiency of the vehicle by enabling energy recuperation in both front and rear axle [9] and also decreasing tire slip losses [10]. It improves motion control of the vehicle by extending the maximum lateral acceleration [11] and decreases response of inner (yaw-rate) control loops.…”

Section: Introductionmentioning

confidence: 99%

IEEE VTS Motor Vehicles Challenge 2023: A Multi-physical Benchmark Problem for Next Generation Energy Management Algorithms

Brembeck

Castro

Tobolar

et al. 2022

2022 IEEE Vehicle Power and Propulsion Conference (VPPC)

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This article presents a benchmark problem that researchers can use to evaluate the performance of energy management algorithms for multi-energy source and multimotor electric vehicles. The model makes use of Modelica, an open source, a-causal, object-oriented language for modeling cyber-physical systems in multidomains (e.g. electrical, mechanical, thermal) of the vehicle components. The model also includes the aspect of three-dimensional mechanics, which enables completely new degrees of freedom in the controller design in comparison to one-dimensional approaches. To support interoperability among multiple design tools, the Modelica vehicle model is provided as a Functional Mockup Unit, an industry standard for exchange of simulation models. A set of standardized input-output interfaces and key performance metrics is also provided in the benchmarking problem, enabling the systematic ranking of multiple energy management strategies.

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Energy reduction by power loss minimisation through wheel torque allocation in electric vehicles: a simulation-based approach

Cited by 30 publications

References 16 publications

Transient Tire Slip Losses Using the Brush Theory

Transient Tire Slip Losses Using the Brush Theory

Optimizing regenerative braking on electric vehicles using a model-based algorithm in the antilock braking system

IEEE VTS Motor Vehicles Challenge 2023: A Multi-physical Benchmark Problem for Next Generation Energy Management Algorithms

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