Design Optimization of an Electric Machine for a 48-V Hybrid Vehicle With Comparison of Rotor Technologies and Pole-Slot Combinations

Fatemi, Alireza; Nehl, T. W.; Yang, Xiaofeng; Hao, Lei; Gopalakrishnan, S.; Omekanda, A.M.; Namuduri, Chandra

doi:10.1109/tia.2020.3007132

Cited by 24 publications

(8 citation statements)

References 30 publications

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“…Thereby, an optimization incorporating FE analysis of the electric machine is often performed [13]. For example, [14][15][16][17] undertake a detailed optimization of the electric machine, where the electric machine's cycle efficiency is one objective. However, if more than one drive unit is installed, the operating points of each drive component depend highly on the specific optimal operating strategy and are no more directly dependent on the driving cycle.…”

Section: Methods For Modelling Electric Drive Systemsmentioning

confidence: 99%

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

et al. 2021

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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.

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Section: Methods For Modelling Electric Drive Systemsmentioning

confidence: 99%

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

et al. 2021

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“…A brief description of the sequence of operations is as follows: when the driver transmits a signal to the electric control units and an operation signal to the motor, the braking force is transmitted to the vehicle calliper through the gearbox and the pump. The motor, which is the main device of the IEB system, must meet all system requirements [22].…”

Section: Conventional Design Of 12–48v Inverter‐fed Blac Motor For Iementioning

confidence: 99%

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Hwang

Kwon

2020

IET Electric Power Applications

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In this study, to maximise the performance and efficiency of 48 V integrated electric brake (IEB) system, a systemlevel optimal design process is proposed for inverter-driven brushless AC (BLAC) motor, taking into account the available input voltage that varies depending on the motor operating conditions. To get available input voltages, the voltage drops of battery wiring and inverter are reversely calculated from the motor output power. In the optimal design process, the resistance components in the inverter are separated into DC and AC parts, and these are analysed by including the dq equivalent circuit for motor analysis. The battery currents are obtained using the calculated maximum output performance and the loss between the battery and inverter. The proposed design process is applied to the optimal design of the 48 V motor for IEB systems. Also, to reduce the development cost of the 48 V motor, the manufacturing tools of the previously developed 12 V motor are shared. As an optimal design results, it is confirmed that there is an efficiency improvement effect of ∼5% compared to the conventional design of 12-48 V BLAC motor.

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“…Recently, Fatemi et al proposed an approach to optimise the design optimization of an electric machine for a 48V mild hybrid vehicle with rotor technology and the slot-pole combinations [8]. To do so, they considered a comparison study of three candidates: (i) a PM synchronous machine (PMSM) with V-shaped rare-earth magnets in the rotor, a PMSM with deep V-shaped ferrite rotor magnets, and a synchronous reluctance machine with four layers of conforming flux barriers.…”

Section: Introductionmentioning

confidence: 99%

Fractional-Slot PMSMs With One Coil Parallel Branches Made Phases—Part 2: Circulating Harmonic Current Rejection Potential

et al. 2022

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The paper is aimed at a class of fractional-slot permanent magnet-synchronous machines (FSPMSMs) equipped with phases made up of one coil parallel branches, with emphasis on their potential to reject the circulating harmonic currents. Following the identification and topological characterization of this class of machines treated in Part 1, the star of slots approach is extended to the investigation of their back-EMF harmonic content, and the possible resulting circulating harmonic currents. It is found that all identified candidates exhibit the potential to reject the circulating harmonic currents. A case study dedicated to a candidate equipped with three phases made up of six parallel branches of one coil each, is treated. Following an analysis of its back-EMF harmonic content, the torque-speed characteristic is analyticallypredicted and validated by 2D finite element analysis and by experiments. The study is achieved by a special attention paid to the iron loss and thermal analysis.INDEX TERMS Fractional-slot PM synchronous machines, one coil parallel branches made phases, start of slots approach, back-EMF harmonic content, circulating harmonic currents, torque production, power flow and thermal analysis.

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Design Optimization of an Electric Machine for a 48-V Hybrid Vehicle With Comparison of Rotor Technologies and Pole-Slot Combinations

Cited by 24 publications

References 30 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

System‐level optimal design process of inverter‐fed BLAC motor used for 12–48 V integrated electric brake system

Fractional-Slot PMSMs With One Coil Parallel Branches Made Phases—Part 2: Circulating Harmonic Current Rejection Potential

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