Analytical Derivation of Efficiency Map of an Induction Machine for Electric Vehicle Applications

Li, Kaibo; Cui, Shumei; Bouscayrol, Alain; Hecquet, Michel

doi:10.1109/vppc.2018.8605000

Cited by 9 publications

(9 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of the electric machine sizing, the authors found six parameters as particularly relevant: rotational speed, machine torque and power, gear ratio, geometric dimensions, and weight. Li et al [7] emphasize the importance of EDS efficiency as an additional parameter which is often neglected, especially in multi-machine systems.…”

Section: Methods For Modelling Electric Drive Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Physics-Based and Data-Enhanced Model for Electric Drive Sizing during System Design of Electrified Powertrains

et al. 2021

View full text Add to dashboard Cite

In multi-drive electrified powertrains, the control strategy strongly influences the component load collectives. Due to this interdependency, the component sizing becomes a difficult task. This paper comprehensively analyses different electric drive system sizing methods for multi-drive systems in the literature. Based on this analysis, a new data-enhanced sizing approach is proposed. While the characteristic is depicted with a physics-based polynomial model, a data-enhanced limiting function ensures the parameter variation stays within a physically feasible range. Its beneficial value is demonstrated by applying the new model to a powertrain system optimization. The new approach enables a detailed investigation of the correlations between the characteristic of electric drive systems and the overall vehicle energy consumption for varying topologies. The application results demonstrate the accuracy and benefit of the proposed model.

show abstract

Section: Methods For Modelling Electric Drive Systemsmentioning

confidence: 99%

“…In order to simplify and accelerate the process, LeBerr et al [25] neglect the saturation effects. Li et al [7] proposed a method to directly derive loss maps of an induction machine based on design parameters, avoiding the aforementioned additional optimization during post-processing.…”

Section: Component Levelmentioning

confidence: 99%

Physics-Based and Data-Enhanced Model for Electric Drive Sizing during System Design of Electrified Powertrains

et al. 2021

View full text Add to dashboard Cite

show abstract

“…f, B, and V are the operating frequency, flux density, and iron volume, respectively. According to the Stienmetz equations, core losses are increased by the increment of the frequency and flux density [64,105].…”

Section: Core Lossesmentioning

confidence: 99%

“…In addition to the electrical and magnetic losses mentioned in previous sections, the mechanical losses including windage [140], friction [37] (mechanical losses [64]), and stray losses [74] are other sources of the power dissipation in the efficiency studies of the electrical machines. The friction and windage losses value depend on the mechanical speed, shaft radius, shaft length, and the environment in which machine works in [140].…”

Section: Mechanical Lossesmentioning

confidence: 99%

Losses in Efficiency Maps of Electric Vehicles: An Overview

et al. 2021

View full text Add to dashboard Cite

In some applications such as electric vehicles, electric motors should operate in a wide torque and speed ranges. An efficiency map is the contour plot of the maximum efficiency of an electric machine in torque-speed plane. It is used to provide an overview on the performance of an electric machine when operates in different operating points. The electric machine losses in different torque and speed operating points play a prominent role in the efficiency of the machines. In this paper, an overview about the change of various loss components in torque-speed envelope of the electric machines is rendered to show the role and significance of each loss component in a wide range of torque and speeds. The research gaps and future research subjects based on the conducted review are reported. The role and possibility of the utilization of the computational intelligence-based modeling of the losses in improvement of the loss estimation is discussed.

show abstract

“…The electric motor map needs to be defined. Without loss of generality, a normalized efficiency map can be obtained for a standard induction motor [27], as shown in Figure 4, under the assumption of relatively limited variation in the rated power. This map can be used for both the power delivery and regeneration stages without losing much accuracy.…”

Section: Electric Motor and Load Modelingmentioning

confidence: 99%

Dual-Motor Planetary Transmission to Improve Efficiency in Electric Vehicles

Mantriota

Reina

2021

Machines

View full text Add to dashboard Cite

Electric cars are typically subject to highly variable operational conditions, especially when they drive in urban environments. Consequently, the efficiency of the electric motors may degrade significantly, possibly leading to lower autonomy and higher running costs. Latest advances in power electronics and motion control have paved the way to the development of novel architectures of full electric power transmissions. In this paper, a dual-motor solution is proposed where two smaller motors are coupled via a planetary gear, in contrast to the standard configuration that uses one larger motor directly connected to the drive wheels with a fixed ratio reducer. The dual-motor architecture guarantees that both motors operate in the vicinity of their optimal working range, resulting in a higher overall energy efficiency. The technical requirements and the control strategy of the dual-motor system are selected through a parametric optimization process. Results included were obtained from extensive simulations performed over different standard driving cycles, showing that the dual-motor power transmission generally outperforms the single-motor counterpart with an average efficiency improvement of about 9% that is reached in both the power delivery and regeneration stage.

show abstract

Analytical Derivation of Efficiency Map of an Induction Machine for Electric Vehicle Applications

Cited by 9 publications

References 19 publications

Physics-Based and Data-Enhanced Model for Electric Drive Sizing during System Design of Electrified Powertrains

Physics-Based and Data-Enhanced Model for Electric Drive Sizing during System Design of Electrified Powertrains

Losses in Efficiency Maps of Electric Vehicles: An Overview

Dual-Motor Planetary Transmission to Improve Efficiency in Electric Vehicles

Contact Info

Product

Resources

About