Design and Analysis of a Permanent Magnetic Bearing for Vertical Axis Small Wind Turbine

Micha, Premkumar T; Mohan, T.; Seralathan, S.

doi:10.1016/j.egypro.2017.05.134

Cited by 26 publications

(10 citation statements)

References 8 publications

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“…Not only does this method require a lot of calculations but also often does not have a corresponding numerical solution. Therefore, many scholars used finite element simulation to analyze and design the structure of permanent magnet bearings [18][19][20][21][22]. Although the finite element simulation is more accurate than the theoretical calculation, it is difficult to carry out numerical simulation when there are no specific dimensions in the initial stage of PMB structure design.…”

Section: Introductionmentioning

confidence: 99%

Design, Analysis, and Experiment of Multiring Permanent Magnet Bearings by Means of Equally Distributed Sequences Based Monte Carlo Method

Zhang

et al. 2019

Mathematical Problems in Engineering

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Load-carrying capacity analysis is an important procedure for designing the permanent magnet bearing (PMB). Generally, the magnetic force exerted between the ring magnets of PMB can be modeled by means of the equivalent magnetic charge method. In this case, the analytical methods are always simply compared to numerical methods; however, they are restricted by their applicability. The model based on the equivalent magnetic charge method contains multiple integrals; it is difficult to get the simulation results quickly through self-contained function of MATLAB. The equally distributed sequences based Monte Carlo method is used to simplify the complicated mathematical derivation and calculus of bearing capacity characteristics of multiring PMBs, and it might improve the computational efficiency of PMB structure design. The results of the Monte Carlo model are compared with the results of finite element analysis (FEA) using ANSYS, and the error correction factor is presented. The theoretical model is verified by the finite element analysis. Finally, the bearing forces in radial and axial directions of the PMBs with 4 pairs of magnetic rings were tested experimentally; the experiment result is approximately agreed with the simulation analysis. This method will be perfect for the engineering application involving multiring structural design of PMBs.

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Section: Introductionmentioning

confidence: 99%

Design, Analysis, and Experiment of Multiring Permanent Magnet Bearings by Means of Equally Distributed Sequences Based Monte Carlo Method

Zhang

et al. 2019

Mathematical Problems in Engineering

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“…El diseño determina la cantidad de energía que se recolectará del viento (Moghadassian & Sharma, 2020). Con el tiempo estas han ido mejorando la eficiencia, y la reducción de fricción con el eje (Micha, Mohan, & Sivamani, 2017).…”

Section: Descripción Del Sistema Globalunclassified

Diseño mecánico de palas para un aerogenerador de 250w de potencia

et al. 2021

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Las zonas rurales tienen una deficiencia de suministro eléctrico importante, ya que las comunidades están alejadas de las redes de transmisión eléctrica, por lo que el desarrollo se delimita apresuradamente en estos lugares. En zonas de este tipo, donde se dispone del recurso renovable del viento, la implantación de máquinas eólicas o aerogeneradores puede representar una solución viable e inmediata al problema energético de necesidades eléctricas básicas. Los aerogeneradores están planificados para áreas con fuertes corrientes de viento para generar la energía, y los mismos presentan de manera más eficiente una solución viable e inmediata, especialmente para el problema energético de las necesidades eléctricas básicas. El diseño experimental propuesto se basó en la literatura existen sobre el diseño de palas para generadores eólicos tomando en cuenta las condiciones locales de áreas rurales de la República Dominicana que tengan las condiciones de viento mínima para que estas funcionen. Sin embargo, la indicación más significativa para seleccionar los materiales es la disponibilidad local. El diseño final presentado en las conclusiones es el resultado de una investigación teórica, una solución de ecuaciones matemáticas y un montaje experimental realizado en el Instituto Tecnológico de Santo Domingo, INTEC. Se espera que este trabajo sea un punto de partida para nuevas investigaciones relacionadas o mejoras al diseño actual en la República Dominicana.

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“…Nevertheless, permanent magnetic bearings (PMB) have several problems, including stability problems. Otherwise, given the long lifetime of its use then PMB is an effective solution to overcome the bearing problems [7]. The study of PMB in wind turbine prototypes to substitute mechanical bearings can enhance rotational speed and torque, therefore enhancing Horizontal Axis Wind Turbine (HAWT) performance [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of an Axial Permanent Magnetic Bearing for 1MW Horizontal Axis Wind

Kriswanto

Nuryanto

Prasdiansyah

et al. 2022

ARFMTS

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One way to reduce maintenance costs while improving wind turbine efficiency is to replace mechanical bearings with permanent magnetic bearings. The permanent magnetic bearing is a free contact bearing in which the rotor is elevated from the stator by the magnet's repelling force. The purpose of this study is to analyze the variation of permanent magnet width and the gap distance between the rotor-stator magnets that can produce the magnetic axial force opposing the thrust force of 1MW horizontal axis wind turbines (HAWT). The method used in this study is a magnetic force simulation using finite element method by varying the magnet thickness, width of the gap, and displacement between the rotor-stator of the PMB model. The PMB model consists of rotor and stator magnets arranged in 3 layers with Nd2Fe14B type material with a magnetic flux density of 1.45 T. Variations in thickness of the rotor and stator magnets are 0.1; 0.15, respectively; 0.2 (m), while variations in the width of the magnetic gap are 4, 5, 6 (mm). The results of the study found that the displacement that produces an axial magnetic force that can support a thrust force of 199.5kN is the lowest in the PMB model with a magnetic thickness of 0.15m with a magnetic gap of 4mm, while the highest is at a magnetic thickness of 0.1m with a magnet gap of 6mm. The greater the thickness of the PMB axial magnet design, the greater the displacement that provides zero axial magnetic forces. Further, the maximum of the magnetic axial force is rise on with increasing magnet thickness.

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Design and Analysis of a Permanent Magnetic Bearing for Vertical Axis Small Wind Turbine

Cited by 26 publications

References 8 publications

Design, Analysis, and Experiment of Multiring Permanent Magnet Bearings by Means of Equally Distributed Sequences Based Monte Carlo Method

Design, Analysis, and Experiment of Multiring Permanent Magnet Bearings by Means of Equally Distributed Sequences Based Monte Carlo Method

Diseño mecánico de palas para un aerogenerador de 250w de potencia

Analysis of an Axial Permanent Magnetic Bearing for 1MW Horizontal Axis Wind

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