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Machines, Volume 10, Issue 5

May 2022 - 123 articles

Cover Story: In high-speed and high-frequency electric machines, one of the major issues that impacts the performance and capability of a machine is the high-frequency eddy current losses in the windings. This work deals with AC winding losses in flat rectangular conductors. Aiming for eddy current loss mitigation, two different materials are investigated and compared for the same winding design, namely, copper and aluminum. Using the finite element method (FEM), the conductor loss and current density behavior are simulated at the strand level. Further, in order to verify the simulated losses, the AC losses are measured and compared over a wide range of frequencies. Finally, recommendations are provided based on the obtained measurements to identify the best winding topology that is most suitable for automotive applications. View this paper
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Articles (123)

  • Article
  • Open Access
20 Citations
4,971 Views
15 Pages

To satisfy the needs of the individualized manufacturing of products, the smart manufacturing system (SMS) is frequently reconfigured. To quickly verify the reliability and adaptability of industrial software in reconfiguring the SMS for new or upgra...

  • Article
  • Open Access
6 Citations
2,787 Views
26 Pages

The aeroengine industry has set strict upper limits for assembly errors in rotor-connecting processes, because assembly errors significantly affect aeroengine stability. Applications of multi-axis mechanisms have the potential to solve the low effici...

  • Article
  • Open Access
12 Citations
3,583 Views
18 Pages

The study of industrial multistage component’s reliability, availability and efficiency poses a constant challenge for the manufacturing industry. Components that suffer wear and tear must be replaced according to the times recommended by the m...

  • Article
  • Open Access
3 Citations
2,686 Views
16 Pages

Stability of Zeros for Sampled-Data Models with Triangle Sample and Hold Implemented by Zero-Order Hold

  • Minghui Ou,
  • Zhiyong Yang,
  • Zhenjie Yan,
  • Mingkun Ou,
  • Shuanghong Liu,
  • Shan Liang and
  • Shengjiu Liu

This paper deals with the stability characteristics of zeros for sampled-data models with a class of triangle sample and hold realized by a traditional zero-order hold. For any controlled models in the modern industrial system, using a digital contro...

  • Article
  • Open Access
4 Citations
2,839 Views
12 Pages

Dynamic substructuring methods are initially developed for time-invariant systems to evaluate the dynamic behavior of a complex structure by coupling the component substructures. Sometimes, the component substructures change their position over time,...

  • Article
  • Open Access
13 Citations
5,268 Views
22 Pages

The conventional algorithm used for target recognition and tracking suffers from the uncertainties of the environment, robot/sensors and object, such as variations in illumination and viewpoint, occlusion and seasonal change, etc. This paper proposes...

  • Article
  • Open Access
10 Citations
3,176 Views
21 Pages

Comprehensive and Simplified Fault Diagnosis for Three-Phase Induction Motor Using Parity Equation Approach in Stator Current Reference Frame

  • Marco Antonio Rodriguez-Blanco,
  • Victor Golikov,
  • Jose Luis Vazquez-Avila,
  • Oleg Samovarov,
  • Rafael Sanchez-Lara,
  • René Osorio-Sánchez and
  • Agustín Pérez-Ramírez

In this paper, a complementary and simplified scheme to diagnose electrical faults in a three-phase induction motor using the parity equations approach during steady state operation bases on the stator current reference frame is presented. The propos...

  • Article
  • Open Access
2,124 Views
21 Pages

This paper investigates the problem of fixed-time attitude consensus tracking control for a team of multiple rigid-bodies in the presence of unknown uncertainties. A robust exact distributed fixed-time observer is presented to estimate velocity state...

  • Article
  • Open Access
7 Citations
2,746 Views
14 Pages

As industrialization accelerates, the industrial sensor network environment becomes more complex. Hierarchical multi-cluster wireless sensing network topology is generally used due to large-scale industrial environments, harsh environments, and data...

  • Article
  • Open Access
4 Citations
3,191 Views
20 Pages

In this study, the failure characteristics of self-made rock with internal flaws under shear were studied and a numerical simulation analysis was carried out. Firstly, based on basic physical and mechanical tests, the shear strength characteristics o...

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Machines - ISSN 2075-1702