Electromagnetic and Thermal Analysis of a Permanent Magnet Motor Considering the Effect of Articulated Robot Link

Luu, Phuong Thi; Lee, Ji-Young; Lee, Jiheon; Park, Jung‐Woo

doi:10.3390/en13123239

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…The other heat sources were core losses in the rotor yoke and mechanical losses in the bearings. Although copper loss and iron loss can be calculated through parameters obtained through electromagnetic field analyses and empirical formulas [17][18][19][20][21][22], respectively, mechanical loss varies depending on the parts and the manufacturing method of the manufactured model. Therefore, it was assumed that the mechanical loss was about 7% of the 3 kW rated output power with reference to the prototype reviewed, until the final model was decided.…”

Section: Thermal Analysismentioning

confidence: 99%

Axial-Flux Permanent-Magnet Generator Design for Hybrid Electric Propulsion Drone Applications

Lee

Nguyen

2021

Energies

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This paper presents the design of an axial-flux permanent-magnet (AFPM) generator used for hybrid electric propulsion drone applications. The design objectives of the AFPM generator are high power density, which is defined as output power per generator weight, and high efficiency. In order to satisfy the requirements for the target application and consider the practical problems in the manufacturing process, the structure of the AFPM generator comprising a double-rotor single-stator (DR-SS) was studied. In order to determine the rotor topology and stator winding specifications that had the greatest impact on performance in the DR-SS type design process, we selected three rotor models according to the arrangement of the magnetization direction and three stator models according to the coreless winding specifications. These models were first compared and analyzed. Then, a 3-D finite element method was performed to calculate the magnetic, mechanical, and thermal characteristics of the designed models. By consideration of the output power, efficiency, temperature, and mechanical stability, etc., a topology suitable for the design of generators for UAV systems was determined and manufactured. The reliability of the design result was confirmed through the test.

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Section: Thermal Analysismentioning

confidence: 99%

Axial-Flux Permanent-Magnet Generator Design for Hybrid Electric Propulsion Drone Applications

Lee

Nguyen

2021

Energies

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“…The heat transfer in the air gap was considered to be forced convection due to the rotor rotation and that between the housing and the surrounding air is considered to be natural convection. The calculation method of these convection coefficients was presented in detail in [19,20]. The reliability of the thermal analysis depends on not only the accuracy of the convection coefficient, but also the material properties.…”

Section: Thermal Analysismentioning

confidence: 99%

Design of the Joint Motor for an Articulated Robot Considering Joint Load Characteristics

Lee

Luu

et al. 2021

Energies

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In this paper, we propose a method to efficiently design joint motors, which are the key elements that drive a cooperative robot. Designing joint motors with more power than the required capacity increases the volume and weight of the robot. On the other hand, designing joint motors with less power than the required capacity can lead to failure and safety accidents because of high temperature rise and mechanical instability. Therefore, in this study, the required capacities of the joint motors were determined through a dynamic analysis of the robot system and incorporated in the joint motor design specifications. An electromagnetic analysis was performed during design using the two-dimensional finite element method, and the detailed dimensions of the motor were determined using the response surface method, which is an optimal design technique. The thermal characteristics of the joint motor were evaluated using a thermal equivalent circuit. The designed joint motors were manufactured, and their performance were tested not only at the component level, but also at the robot system level to verify experimentally the validity and usefulness of the proposed joint motor design method.

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Research on cogging torque characteristics of permanent magnet synchronous machines with the same number of poles and slots

Yang

Chen²,

Yang³

et al. 2022

Journal of Magnetism and Magnetic Materials

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Electromagnetic and Thermal Analysis of a Permanent Magnet Motor Considering the Effect of Articulated Robot Link

Cited by 7 publications

References 20 publications

Axial-Flux Permanent-Magnet Generator Design for Hybrid Electric Propulsion Drone Applications

Axial-Flux Permanent-Magnet Generator Design for Hybrid Electric Propulsion Drone Applications

Design of the Joint Motor for an Articulated Robot Considering Joint Load Characteristics

Research on cogging torque characteristics of permanent magnet synchronous machines with the same number of poles and slots

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