Electromagnetic Design and Losses Analysis of a High-Speed Permanent Magnet Synchronous Motor with Toroidal Windings for Pulsed Alternator

Wan, Yi; Cui, Shumei; Wu, Shaopeng; Song, Lei

doi:10.3390/en11030562

Cited by 7 publications

(3 citation statements)

References 25 publications

(29 reference statements)

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“…It must be highlighted that the reported values are not absolute and have been determined based on the available data in the collected references. The size of the wire and number of strands can change the ohmic losses in a specific design [158]. The type and thickness of the laminated materials can change the core losses [159].…”

Section: Discussion On the Loss Analysismentioning

confidence: 99%

Losses in Efficiency Maps of Electric Vehicles: An Overview

et al. 2021

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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.

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Section: Discussion On the Loss Analysismentioning

confidence: 99%

Losses in Efficiency Maps of Electric Vehicles: An Overview

et al. 2021

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“…For add-on interface integrated chargers where DC voltages and currents were passed through the windings, iron losses accounted for an efficiency drop of 1.3% for a three-phase 1.5kW charger [81] and 2.4% for a single-phase 3.3kW charger [79]. With AC charging, both the fundamental and high frequency injected by the switching of the inverter could lead to a substantial iron loss [83]. For a three-phase split-phase PMSM, the 2kW integrated charger was approximately 80% efficient.…”

Section: Integrated Chargersmentioning

confidence: 99%

Bidirectional Nonisolated Fast Charger Integrated in the Electric Vehicle Traction Drivetrain

Eull

Zhou

Jahnes

et al. 2022

IEEE Trans. Transp. Electrific.

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Electric vehicles present an opportunity to reduce the substantial global footprint of road transportation. Cost and range anxiety issues, however, remain major roadblocks to their widespread adoption. One of the simplest ways to reduce cost is to remove components from the vehicle via novel topologies, estimation and control; to reduce range anxiety, charging infrastructure needs to be simplified and the power electronics in the vehicle made more efficient. This thesis proposes a bidirectional non-isolated fast charger integrated in the traction drivetrain of an electric vehicle that is enabled by a modular power electronic converter topology called the autoconverter module. The autoconverter module is an evolution of previous modular power electronic concepts with the goal of a highly integrated, high performance converter capable of being used in a number of applications through simple parallelization. By simplifying system design through the use of one base power conversion block, overall system cost can be reduced.Key to the realization of the power module is state estimation. To enable high performance operation of the system, low noise state information must be provided to the controller. State estimation is capable of filtering measurement noise to achieve this goal. However, conventional estimation techniques typically have low bandwidth and a convergence time associated with them, limiting the overall control system's performance. Higher performance techniques, such as receding horizon estimation, offer near-instantaneous estimation with noise rejection capabilities,

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“…The motor geometry was approximated as two concentric cylinders, representing the rotor and stator, separated by a long, narrow annulus of oil as shown in Figure 9(a). The ratio of the motor losses originating in the rotor and stator was assumed to be similar to the results of Wan et al [51] for other permanent magnet synchronous motors.…”

Section: Thermal Coupling To the Environment Tomentioning

confidence: 99%

Prediction of Electric Vehicle Transmission Efficiency Using a New Thermally Coupled Lubrication Model

Shore¹,

Christodoulias²,

Kolekar³

et al. 2022

SAE Technical Paper Series

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We present a new method to predict the power losses in electric vehicle (EV) transmission systems using a thermally coupled gearbox efficiency model. Friction losses in gear teeth contacts are predicted using an iterative procedure to account for the thermal coupling between the tooth temperature, oil viscosity, film thickness, friction, and oil rheology during a gear mesh cycle. Crucially, the prediction of the evolution of the coefficient of friction (COF) along the path of contact incorporates measured lubricant rheological parameters as well as measured boundary friction. This allows the model to differentiate between nominally similar lubricants in terms of their impact on EV transmission efficiency. Bearing and gear churning losses are predicted using existing empirical relationships. The effects of EV motor cooling and heat transfers in the heat exchanger on oil temperature are considered. Finally, heat transfer to the surroundings is accounted for so that the evolution of gearbox temperature over any given drive cycle can be predicted. The general approach presented here is applicable to any automotive gearbox while incorporating features specific to EVs. The model predictions are compared to real road

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Electromagnetic Design and Losses Analysis of a High-Speed Permanent Magnet Synchronous Motor with Toroidal Windings for Pulsed Alternator

Cited by 7 publications

References 25 publications

Losses in Efficiency Maps of Electric Vehicles: An Overview

Losses in Efficiency Maps of Electric Vehicles: An Overview

Bidirectional Nonisolated Fast Charger Integrated in the Electric Vehicle Traction Drivetrain

Prediction of Electric Vehicle Transmission Efficiency Using a New Thermally Coupled Lubrication Model

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