Design and assembly of a magnetic circuit with four magnetic field regions applied to a thermomagnetic motor prototype

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dc.creatorDalila Torres Lima
dc.creatorClara Estillac Leal Silva
dc.creatorVinicius Souza de Jesus
dc.creatorGustavo Costa Mendonça
dc.creatorHigor Caldas Rios
dc.creatorHugo César Coelho Michel
dc.creatorCarmela Maria Polito Braga
dc.creatorPaulo Vinicius Trevizoli
dc.creatorMarcelo Câmara
dc.date.accessioned2025-05-30T14:20:35Z
dc.date.accessioned2025-09-09T00:16:58Z
dc.date.available2025-05-30T14:20:35Z
dc.date.issued2023
dc.identifier.urihttps://hdl.handle.net/1843/82659
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartof27th COBEM – International Congress of Mechanical Engineering
dc.rightsAcesso Aberto
dc.subjectCircuitos integrados
dc.subject.otherthermomagnetic motors
dc.subject.othermagnetic circuit
dc.subject.otherdesing
dc.subject.otherproduction
dc.subject.othermachine center
dc.titleDesign and assembly of a magnetic circuit with four magnetic field regions applied to a thermomagnetic motor prototype
dc.typeArtigo de evento
local.description.resumoThermomagnetic motors (TMM) are devices employed to convert low-grade thermal energy waste into mechanical energy. The generation of torque and power in a TMM relies on the variation of the magnetic phase, occurring around the Curie temperature (T Curie), of a magnetic material and its interaction with an external magnetic field. This work presents the design, fabrication and assembly of a permanent magnet magnetic circuit (MC) which is part of a rotary TMM. The MC incorporates four high magnetic field regions to maximize power output. The design process involved 3D simulations in COMSOL Multiphysics, Module AC/DC, to evaluate the intensity and distribution of the magnetic field. Parameters such as the magnetic gap height and the utilization of soft magnetic materials were thoroughly investigated to enhance the magnetic field intensity and achieve greater homogeneity within the magnetic volume. The final design of the MC comprises commercially available blocks of NdFeB grade N42, arranged in a Halbach array configuration, along with ABNT 1020 steel components to enclose the magnetic circuit. During the production phase, conventional machining operations were employed, utilizing the Machine Center, to ensure the precise assembly of the MC components with minimal deviations. The quality of the production and final assembly was assessed through experimental measurements of the generated magnetic field, which were subsequently compared with the simulation results.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://streamlab.demec.ufmg.br/wp-content/uploads/2024/07/COBEM-2023-Torres-et-al.pdf

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