2-D Analytical Copper Loss Model for PCB and Copper Foil Magnetics With Arbitrary Air Gaps

Yu, Zheyuan; Yang, Xu; Xu, Yuhang; Gao, Qingyuan; Zhou, Yongxing; Wu, Jianpeng; Wang, Kangping; Zhang, Fan; Wang, Laili; Yang, Xu

doi:10.1109/tpel.2023.3288993

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…From (30), it is obvious that the value of α1 is taken to the left of α10, and at this time the value of D3 increases with the increase in α1. According to (7), the winding loss increases.…”

Section: Winding Arrangementmentioning

confidence: 98%

“…In most cases, the analytical copper loss model considering air gap and fringing effects of copper foil magnetic devices and PCB can also be applied to the above optimization design method. The two-dimensional AC resistance model is defined as follows [ 30 ]:

…”

Section: Winding Optimization Designmentioning

confidence: 99%

“…Various methods exist for predicting winding losses, including analytical and numerical approaches [ 26 , 27 ]. Notably, loss models for Litz wire devices [ 28 ] and 2D copper foil devices are continuously optimized [ 29 , 30 , 31 ]. Analytical prediction models for core losses encompass mathematical models, time-domain approximation models, loss separation models, and empirical models [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

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Loss-Optimized Design of Magnetic Devices

Zhao,

Ming,

2024

Micromachines

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Maximizing efficiency, power density, and reliability stands as paramount objectives in the advancement of power electronic systems. Notably, the dimensions and losses of magnetic components emerge as primary constraints hindering the miniaturization of such systems. Researchers have increasingly focused on the design of loss minimization and size optimization of magnetic devices. In this paper, with the objective of minimizing the loss of magnetic devices, an optimal design method for the winding structure of devices is proposed based on the coupling relationship between the loss prediction model and the design variables. The method examines the decoupling conditions between the design variables and the loss model, deriving optimized design closure equations for the design variables. This approach furnishes a technical foundation for the miniaturized design of miniature apparatuses incorporating magnetic components, offering a straightforward and adaptable design methodology. The finite element method simulation results and experimental measurement data verify the accuracy of the prediction of the proposed method and the validity of the optimal design theory of device loss.

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Section: Winding Arrangementmentioning

confidence: 98%

…”

Section: Winding Optimization Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Loss-Optimized Design of Magnetic Devices

Zhao,

Ming,

2024

Micromachines

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An Enhanced Six-Turn Multilayer Planar Inductor Interleaved Winding Design for LLC Resonant Converters with Low Current Ringing

Liu,

Zhang

2024

Electronics

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Planar magnetic components have been widely used in high-density power converters and are suitable for various topologies. The application of planar inductors in LLC resonant converters can lead to parasitic capacitance, which causes current ringing and results in EMI issues. To mitigate the impact of current ringing, the parasitic capacitance of the planar inductor needs to be reduced. This paper proposes a new six-turn interleaved winding design. Compared to the previous four-turn interleaved winding design, it maintains low parasitic capacitance while positioning both the input and output terminals of the inductor on the outer turn, further enhancing the integration of high-density power converters. The parasitic capacitance was calculated using theoretical methods and verified through finite element simulations. Experimental validation was conducted using an LLC resonant converter test platform. Compared to the previous four-turn interleaved winding design, the new six-turn interleaved winding design satisfies both the input and output terminals, using an outer turn configuration. Additionally, the new design exhibits reduced parasitic capacitance and is suitable for use in LLC resonant converters, where it also minimizes current ringing.

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2-D Analytical Copper Loss Model for PCB and Copper Foil Magnetics With Arbitrary Air Gaps

Cited by 2 publications

References 20 publications

Loss-Optimized Design of Magnetic Devices

Loss-Optimized Design of Magnetic Devices

An Enhanced Six-Turn Multilayer Planar Inductor Interleaved Winding Design for LLC Resonant Converters with Low Current Ringing

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