Influences of Stator Teeth Number on PM Coupling Levels of Co-Axial Dual-Mechanical-Port Flux-Switching PM Machines

Zhou, Lei; Wang, Hua

doi:10.1109/tmag.2019.2899616

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…Flux-switching PMSMs (FSPMSMs) have also recently exhibited to be promising candidates for HEV/EVs [103][104][105][106][107][108][109][110][111]. They offer high power and torque densities, high efficiency at low-speed operations, compact structure, and lower torque ripples.…”

Section: • Electrical Machines (Em)smentioning

confidence: 99%

“…The aforementioned features can be advanced by employing double stator/rotor structures. L. Zhou, and W. Hua [103], have studied the influence of the stator teeth number on the magnet field couplings of co-axial dual-mechanical-port FSPMSMs for fuel-based extendedrange electric vehicles. They have used a double stator and rotor topology to determine the best possible electromagnetic capability.…”

Section: • Electrical Machines (Em)smentioning

confidence: 99%

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Overview of Sensitivity Analysis Methods Capabilities for Traction AC Machines in Electrified Vehicles

Asef

Lapthorn

2021

IEEE Access

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A robust design in electrified powertrains substantially helps to enhance the vehicle's overall efficiency. Robustness analyses come with complexity and computational costs at the vehicle level. The use of sensitivity analysis (SA) methods in the design phase has gained popularity in recent years to improve the performance of road vehicles while optimizing the resources, reducing the costs, and shortening the development time. Designers have started to utilize the SA methods to explore: i) how the component and vehicle level design options affect the main outputs i.e. energy efficiency and energy consumption; ii) observing sub-dependent parameters, which might be influenced by the variation of the targeted controllable (i.e. magnet thickness) and uncontrollable (i.e. magnet temperature) variables, in nonlinear dynamic systems; and iii) evaluating the interactions, of both dependent, and sub-dependent controllable/uncontrollable variables, under transient conditions. Hence the aim of this study is to succinctly review recent utilization of SA methods in the design of AC electric machines (EM)s used in vehicle powertrains, to evaluate and discuss the findings presented in recent research papers while summarizing the current state of knowledge. By systematically reviewing the literature on applied SAs in electrified powertrains, we offer a bibliometric analysis of the trends of application-oriented SA studies in the last and next decades. Finally, a numericalbased case study on a third-generation TOYOTA Prius EM will be given, to verify the SA-related findings of this paper, alongside future works recommendations.INDEX TERMS Automotive engineering, AC machines, electric vehicles, robustness, sensitivity analysis, permanent magnet machines, time series analysis, statistics.

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Section: • Electrical Machines (Em)smentioning

confidence: 99%

Section: • Electrical Machines (Em)smentioning

confidence: 99%

Overview of Sensitivity Analysis Methods Capabilities for Traction AC Machines in Electrified Vehicles

Asef

Lapthorn

2021

IEEE Access

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“…Afterward, because of the low space utilization of the conventional Ucore FSPM machine, some scholars proposed a partitioned-rotor FSPM machine, which exhibited a high torque density and high magnet utilization [19]. To overcome the complex structure of the conventional electric vehicle and the shortcomings of low space utilization, a co-axial dual-mechanical-port FSPM (CADMP-FSPM) machine was proposed [20,21], which integrated the generator and the traction motor radially, and the CADMP-FSPM machine improves system integration and makes full use of the space of the vehicle.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Performance Analysis of Dual-Three-Phase Dual-Rotor Flux-Switching Permanent Magnet Machines

Chen,

Zhao,

et al. 2024

Energies

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In this paper, a novel dual-three-phase dual-rotor flux-switching permanent magnet (PM) (DRFSPM) machine, building upon conventional FSPM machines, is proposed, where the stator is equipped with dual PMs and dual armature windings, enabling it to operate in various working modes and provide fault tolerance in the event of PM or armature winding faults. Depending on the magnetization directions of the PMs, the proposed DRFSPM machine’s structure can be categorized as 6N-DRFSPM or NS-DRFSPM. In order to assess the electromagnetic performance of the proposed DRFSPM machines with two different magnetizing modes, the topology and operating principle of the two DRFSPM machines are introduced first. Then, the no-load air-gap flux density of the two proposed machines is investigated for a more optimized and purposeful design. Finally, a comparison of the electromagnetic performance between the two proposed DRFSPM machines is conducted by finite-element analysis (FEA), and the FEA-predicted results indicate that the proposed 6N-DRFSPM machine outperforms the NS-DRFSPM machine, as it exhibits a larger back-EMF and average torque and a smaller cogging torque and torque ripple.

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“…With an emphasis on PM field distribution, back-EMF and air-gap flux density between the inner and outer stator tooth numbers, the effect of magnetic coupling on co-axial DRPMFSMs is explored in [14] for hybrid electric vehicles. This study does not provide any information available on the impact on other electromagnetic performance indices, such as power factor, torque, efficiency, and torque ripple.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Counter-Rotating Dual-Rotor Permanent-Magnet Flux-Switching Machine with Series and Parallel Stator Teeth

Ullah,

Khan,

Akuru

et al. 2023

Machines

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In this study, the focus is on the magnetic path formation and its effects on the performance of a counter-rotating dual-rotor permanent-magnet flux-switching machine (CR-DRPMFSM) for direct-drive counter-rotating wind power generation, based on different stator slot and rotor pole combinations. To fully exploit rotor-shaft bore and improve fault-tolerant design, as well as increase torque density, dual-rotor topologies with the capability for dual electrical and dual mechanical ports are investigated. Moreover, the direct-drive counter-rotating wind power generation technique offers a brushless topology, thus reducing maintenance cost and improving energy conversion efficiency compared to single-blade wind turbine systems. Using finite element analysis (FEA), the inherent magnetic coupling of the series and parallel paths shows varied impacts on the electromagnetic performance of four different CR-DRPMFSMs based on the slot/pole combinations (MI to MIV) considered in this study. The key electromagnetic performance indices, such as torque, cogging torque, torque ripple, power factor, and efficiency, show proportionate variation to the coupling level. A comparative analysis shows that MI exhibits higher average torque, lower torque ripples, and high efficiency, reaching 90% with a power factor of 0.6. As an optimal design, an MI test prototype is developed. The experimental test prototype validates the FEA results under no-load and on-load conditions.

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Influences of Stator Teeth Number on PM Coupling Levels of Co-Axial Dual-Mechanical-Port Flux-Switching PM Machines

Cited by 7 publications

References 13 publications

Overview of Sensitivity Analysis Methods Capabilities for Traction AC Machines in Electrified Vehicles

Overview of Sensitivity Analysis Methods Capabilities for Traction AC Machines in Electrified Vehicles

Electromagnetic Performance Analysis of Dual-Three-Phase Dual-Rotor Flux-Switching Permanent Magnet Machines

Evaluation of Counter-Rotating Dual-Rotor Permanent-Magnet Flux-Switching Machine with Series and Parallel Stator Teeth

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