Design and Optimization of a Magnetic-Geared Direct-Drive Machine With V-Shaped Permanent Magnets for Ship Propulsion

Hong, Zhao; Liu, Chunhua; Dong, Zhiping; Huang, Rundong; Li, Xianglin

doi:10.1109/tte.2021.3124891

Cited by 35 publications

(9 citation statements)

References 35 publications

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“…In order to meet the practical needs of low speed and a heavy load and a large transmission ratio, the study of the dynamics of the gear transmission system is becoming a hot spot for engineering applications and academic research. According to the research focus, [ 14 ] used the finite element method, the centralized parameter method, and the experimental modal analysis method, respectively. In [ 15 ], the finite element model and the centralized parametric model of the gear set were established, and the results of the two models were compared and analyzed, and the results of the two models were found to be consistent.…”

Section: Related Workmentioning

confidence: 99%

Nonlinear Dynamic Response Analysis of a Three-Stage Gear Train Based on Lightweight Calculation for Edge Equipment

Ren

Yang-wu

Wang

et al. 2022

Computational Intelligence and Neuroscience

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Bevel gears are widely used in aerospace transmission systems as well as modern mechanical equipment. In order to meet the needs and development of aerospace, high-speed dynamic vehicles, and various defense special equipment, higher and higher requirements are made for the high precision and stability of gear transmission systems, as well as the prediction and control of noise and vibration. Considering the nonlinear factors such as comprehensive gear error and tooth side clearance, a dynamic model of the three-stage gear transmission system is established. The relevant physical parameters, geometric parameters, and load parameters in the gear system are considered random variables to obtain the stochastic vibration model. When the random part of the random parameters is much smaller than the deterministic part, the vibration differential equation is expanded into a first-order term at the mean of the random parameter vector according to the Taylor series expansion theorem, and the ordering equation is solved numerically. Based on the improved stochastic regression method, the nonlinear dynamic response analysis of the three-stage gear train is carried out. This results in a relatively stable system when the dimensionless excitation frequency is in the range of 0.716 to 0.86 and the magnitude of the dimensionless integral meshing error is < 1.089.

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Section: Related Workmentioning

confidence: 99%

Nonlinear Dynamic Response Analysis of a Three-Stage Gear Train Based on Lightweight Calculation for Edge Equipment

Ren

Yang-wu

Wang

et al. 2022

Computational Intelligence and Neuroscience

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“…These advantages stem from MGs' ability to inherently provide overload protection through the physical separation of input and output rotors, a critical feature that significantly enhances transmission reliability [6]. Unlike mechanical gears, which rely on the direct meshing of teeth on the master and slave wheels for motion and power transmission, MGs utilize the coupling of magnetic fields between permanent magnets affixed to these wheels, a principle that is also finding applications in the design of electric motors, such as permanent-magnet field-modulation machines [7,8]. The initial phase of MG research focused on developing magnetic gear topologies by drawing parallels with the traditional designs of mechanical gears.…”

Section: Introductionmentioning

confidence: 99%

Design of an Axial-Type Magnetic Gear with Auxiliary Flux-Enhancing Structure

Li,

Zhao,

2024

Energies

Self Cite

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In this paper, a new axial-type magnetic gear with an auxiliary flux-enhancing structure (AFS-AMG) is proposed. Compared to conventional AMGs, it has a higher torque density and higher permanent magnet (PM) utilization factor. Firstly, the design rules and operating principles of the proposed AFS-AMG are elaborated. Then, the mapping relation between the radial-type magnetic gears (RMGs) and AMGs are elucidated. Compared to its counterparts in RMGs, the AFS-AMG achieves a small size. Then, the geometrical parameters of the AFS-AMG are optimized to obtain better electromagnetic performance, where the torque density per volume and per PM volume is adopted as the evaluation standard. Finally, three different AMG topologies are constructed in finite element analysis (FEA) software for comparison. It is proven that the AFS-AMG has the largest torque density per volume and per PM volume.

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“…Ahmad H and Ro J S [4] proposed a V-rotor topology vernier motor with excellent torque performance and adopted multi-objective optimization to further improve the torque density. Zhao H, et al [5] introduced a new V-shaped magnetic gear direct drive motor to improve the torque and power density by extending the inner rotor shaft and designed a prototype based on the combined optimization of genetic algorithm and finite element analysis. Chen Y, et al [6] combined V-shaped permanent magnets with single peaks to provide more sufficient guiding performance and load capacity for the whole system.…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of a Built-in V-Rotor Ultra-Efficient PMSM Based on Multiple Air Slots

Liu

Wang

Yang

2023

J. Phys.: Conf. Ser.

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According to indicators, the New V-Rotor Permanent Magnet Motor (NVRPM) for compressors with a rated power of 22 kW and a rated speed of 3000 rpm is optimally designed. Because of the large number of permanent magnets in the V-type PM motor, the magnetic leakage between rotor poles will increase, and its air gap magnetic field contains large harmonic components, which is easy to increase the loss and reduce the efficiency. The structure of the initial V-shaped rotor was optimized by adding multiple air slots and cosine non-uniform air gaps on the rotor surface. Through the finite element simulation of electromagnetic characteristics of NVRPM, it is proved that the improvement of the new motor structure can reduce the loss, weaken the cogging torque, and decrease the torque ripple, and the simulation efficiency is up to 96%, and its operation area is wide and efficient. Finally, the results show that the optimization design of the NVRPM structure is feasible.

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Design and Optimization of a Magnetic-Geared Direct-Drive Machine With V-Shaped Permanent Magnets for Ship Propulsion

Cited by 35 publications

References 35 publications

Nonlinear Dynamic Response Analysis of a Three-Stage Gear Train Based on Lightweight Calculation for Edge Equipment

Nonlinear Dynamic Response Analysis of a Three-Stage Gear Train Based on Lightweight Calculation for Edge Equipment

Design of an Axial-Type Magnetic Gear with Auxiliary Flux-Enhancing Structure

A Novel Design of a Built-in V-Rotor Ultra-Efficient PMSM Based on Multiple Air Slots

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