Comparative Analysis of AC Copper Loss With Round Copper Wire and Flat Copper Wire of High-Speed Stator-PM Flux-Switching Machine

Yu, Wenfei; Wang, Hua; Zhang, Zhiheng; Wu, Zhongze; Wang, Peixin; Xia, Weiguo

doi:10.1109/tia.2022.3194042

Cited by 10 publications

(1 citation statement)

References 43 publications

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“…Many studies on circulating current primarily rely on finite element analysis (FEA) without conducting a thorough analysis of the generation mechanisms. The effect of different winding arrangements on the circulating currents was analyzed, but the causes of the circulating currents generation were not be revealed [11]- [13]. Also, the use of FEA requires modeling each conductor in every slot of the electrical motor, which is time-consuming.…”

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confidence: 99%

Analysis and suppression of circulating current loss of high-speed permanent magnet motor

Wang,

Ji,

et al. 2024

Chin. J. Electr. Eng.

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This paper aims to investigate the effects of circulating currents in AC copper loss and propose a suppression method.Firstly, the circuit model of the winding is established, and the magnetic leakage field in the stator slot is analyzed. Then, the equivalent model is built according to the magnetic leakage field in the slot, which is used to analyze the magnetic linkage of the strand as the position change of the conductor in the slot. Moreover, the circulating currents between the two different winding arrangements are compared. Furthermore, a winding arrangement is newly proposed to suppress the circulating current loss according to the investigation. Finally, experiments are performed to validate the effectiveness of the proposed new design.

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confidence: 99%

Analysis and suppression of circulating current loss of high-speed permanent magnet motor

Wang,

Ji,

et al. 2024

Chin. J. Electr. Eng.

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Modeling of output characteristics of giant magnetostrictive transducer considering temperature and eddy currents

Huang,

Gao,

et al. 2024

Journal of Applied Physics

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Due to the high conductivity and low permeability of giant magnetostrictive materials (GMMs), eddy currents and temperature rise caused by these materials are unavoidable. These factors will significantly impact the output efficiency and reliability of giant magnetostrictive transducers (GMTs). It is essential to conduct precise evaluations of the output characteristics in various temperature settings to effectively design and optimize the transducer. However, to reduce the eddy current loss of GMMs, a radial slit is introduced. The intricate geometry also contributes to the complexity of analysis. According to the practical engineering requirements, this paper initially established a testing system for GMM characteristic and analyzed the mechanism between material temperature and output characteristics. Second, improvements have been made to the equivalent circuit method. Research has been conducted on the influence of temperature and eddy currents on the electrical and mechanical equivalent circuits, leading to the creation of a comprehensive equivalent circuit model for GMTs. Finally, a testing platform has been set up to assess the temperature-output characteristics of the transducer. The impedance and displacement characteristics of a GMT were examined to validate the proposed model. The test results demonstrated that within the 20 – 100 °C range, the discrepancy between the model and the measured impedance is under 1%, and the displacement amplitude error is less than 5%, thus confirming the precision of the proposed model.

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Loss Analysis of Permanent Magnet Synchronous Motor System Based on Strategy-Circuit-Field Co-Simulation and an Accurate Iron Loss Calculation Method

Li,

Xue,

Fan

et al. 2024

IEEE Access

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Comparative Analysis of AC Copper Loss With Round Copper Wire and Flat Copper Wire of High-Speed Stator-PM Flux-Switching Machine

Cited by 10 publications

References 43 publications

Analysis and suppression of circulating current loss of high-speed permanent magnet motor

Analysis and suppression of circulating current loss of high-speed permanent magnet motor

Modeling of output characteristics of giant magnetostrictive transducer considering temperature and eddy currents

Loss Analysis of Permanent Magnet Synchronous Motor System Based on Strategy-Circuit-Field Co-Simulation and an Accurate Iron Loss Calculation Method

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