Investigation and Development of the Brushless and Magnetless Wound Field Synchronous Motor Drive System for Electric Vehicle Application

Li, Yanhui; Wang, Yiwei; Zhang, Zhuoran; Li, Jincai

doi:10.3390/wevj14040081

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…This raises crucial mechanical challenges, demanding significant improvements in rotor strength and stiffness. To address these challenges, researchers have investigated motors like synchronous reluctance motors (SRMs) and wound field synchronous motors (WFSMs) as potential solutions [8][9][10]. These motors offer benefits such as a simple rotor structure without permanent magnets, making them suitable for high-speed operation.…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis, and Comparison of Electric Vehicle Drive Motor Rotors Using Injection-Molded Carbon-Fiber-Reinforced Plastics

Liu,

Park,

2024

WEVJ

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Due to their excellent mechanical strength, corrosion resistance, and ease of processing, carbon fiber and carbon-fiber-reinforced plastics are finding wide application in diverse fields, including aerospace, industry, and automobiles. This research explores the feasibility of integrating carbon fiber solutions into the rotors of 85-kilowatt electric vehicle interior permanent magnet synchronous motors. Two novel configurations are proposed: a carbon fiber wire-wound rotor and a carbon fiber injection-molded rotor. A finite element analysis compares the performance of these models against a basic designed rotor, considering factors like no-load back electromotive force, no-load voltage harmonics, cogging torque, load torque, torque ripple, efficiency, and manufacturing cost. Additionally, a comprehensive analysis of system efficiency and energy loss based on hypothetical electric vehicle parameters is presented. Finally, mechanical strength simulations assess the feasibility of the proposed carbon fiber composite rotor designs.

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Section: Introductionmentioning

confidence: 99%

Design, Analysis, and Comparison of Electric Vehicle Drive Motor Rotors Using Injection-Molded Carbon-Fiber-Reinforced Plastics

Liu,

Park,

2024

WEVJ

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“…In recent years, spurred by escalating environmental concerns, there has been a notable surge in development efforts within the e-mobility industry, particularly focusing on the creation of electric motors boasting high efficiency and output [1][2][3]. Various motors find application in industrial settings, including the induction motor (IM), synchronous reluctance motor (SynRM), permanent-magnet synchronous motor (PMSM), and wound field synchronous motor (WFSM) [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Utilizing MicroGenetic Algorithm for Optimal Design of Permanent-Magnet-Assisted WFSM for Traction Machines

Seo,

Park,

Kim

et al. 2024

Applied Sciences

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With increasing worries about the environment, there is a rising focus on saving energy in various industries. In the e-mobility industry of electric motors, permanent magnet synchronous motors (PMSMs) are widely utilized for saving energy due to their high-efficiency motor technologies. However, challenges like environmental degradation from rare earth development and difficulties in controlling magnetic field fluctuations persist. To address these issues, active research focuses on the wound field synchronous motor (WFSM), known for its ability to regulate field current efficiently across various speeds and operating conditions. Nevertheless, compared with other synchronous motors, the WFSM tends to exhibit relatively lower efficiency and torque density. Because the WFSM involves winding both the rotor and the stator, it results in increased copper and iron losses. In this article, a model that enhances torque density by inserting permanent magnets (PMs) into the rotor of the basic WFSM is proposed. This proposed model bolsters the d axis magnetic flux, thereby enhancing the motor’s overall performance while addressing environmental concerns related to rare-earth materials and potentially reducing manufacturing costs when compared with those of the PMSM. The research methodology involves a comprehensive sensitivity analysis to identify key design variables, followed by sampling using optimal Latin hypercube design (OLHD). A surrogate model is then constructed using the kriging interpolation technique, and the optimization process employs a micro-genetic algorithm (MGA) to derive the optimal model configuration. The algorithm was performed to minimize the use of PMs when the same torque as that of the basic WFSM is present, and to reduce torque ripple. Error assessment is conducted through comparisons with finite element method (FEM) simulations. The optimized permanent-magnet-assisted WFSM (PMa-WFSM) model improved efficiency by 1.08% when it was the same size as the basic WFSM, and the torque ripple decreased by 5.43%. The proposed PMa-WFSM derived from this article is expected to be suitable for use in the e-mobility industry as a replacement for PMSM.

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Design and Semi-Analytical Optimization of a Brushless Wound Rotor Synchronous Motor for a Battery Electric Vehicle

Demır,

Tap,

Ergene

2023

2023 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) &Amp; 2023 International Conference O

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Investigation and Development of the Brushless and Magnetless Wound Field Synchronous Motor Drive System for Electric Vehicle Application

Cited by 3 publications

References 20 publications

Design, Analysis, and Comparison of Electric Vehicle Drive Motor Rotors Using Injection-Molded Carbon-Fiber-Reinforced Plastics

Design, Analysis, and Comparison of Electric Vehicle Drive Motor Rotors Using Injection-Molded Carbon-Fiber-Reinforced Plastics

Utilizing MicroGenetic Algorithm for Optimal Design of Permanent-Magnet-Assisted WFSM for Traction Machines

Design and Semi-Analytical Optimization of a Brushless Wound Rotor Synchronous Motor for a Battery Electric Vehicle

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