Overview of Planar Magnetics for High-frequency Resonant Converters

Liu, Yue; Song, Yufeng; Hu, Dingfan; Li, Yang; Zhang, Zuoqian; Wu, Hongfei

doi:10.23919/cjee.2022.000039

Cited by 11 publications

(6 citation statements)

References 76 publications

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“…The measurement of winding loss in magnetic devices is generally categorized into the impedance analysis method and the power measurement method. The impedance analysis method does not consider the effect of actual operating conditions on winding loss and is suitable for measuring winding loss with sinusoidal excitation [ 21 ]. While the power measurement method considers the actual operating conditions of the magnetic device, its measurement accuracy depends on impedance angle measurement.…”

Section: Experimental Analysis and Discussionmentioning

confidence: 99%

“…All parameters are fixed except conductor diameter and the number of turns, and a set of n values is set to fit the analytical equation between n and doptMF. The analytical equations for the winding losses are obtained by substituting the fitted equations into (7) and (22), and then the partial derivatives of the total losses are combined with (21) to obtain the optimum loss rate and number of turns for optimum winding design.…”

Section: Number Of Turnsmentioning

confidence: 99%

“…However, this technique also improves the fabrication process and cost of magnetic devices. Third, the geometrical parameters of the magnetic core are associated with the losses of the device, and the optimal solution of the geometrical parameters of the core can be obtained to minimize the losses of the device [ 19 , 20 , 21 ]. The material and type of conductor, the winding structure, and the winding scheme determine the size and loss of the magnetic device [ 22 , 23 , 24 , 25 ].…”

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: Experimental Analysis and Discussionmentioning

confidence: 99%

Section: Number Of Turnsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Loss-Optimized Design of Magnetic Devices

Zhao,

Ming,

2024

Micromachines

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“…The integrated magnetic structure can eliminate magnetic flux, which helps reduce core size and the core loss [78] . Research on high-frequency resonant conversion based on planar magnetics is becoming extensive [79] . In Ref.…”

Section: Multiple Integrated Structurementioning

confidence: 99%

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

Chen,

Zhang,

et al. 2023

Chin. J. Electr. Eng.

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In today's fast-paced, information-driven world, data centers can offer high-speed, intricate capabilities on a larger scale owing to the ever-growing demand for networks and information systems. Because data centers process and transmit information, stability and reliability are important. Data center power supply architectures rely heavily on isolated bidirectional DC-DC converters to ensure safety and stability. For the smooth operation of a data center, the power supply must be reliable and uninterrupted. In this study, we summarize the basic principle, topology, switch conversion strategy, and control technology of the existing isolated bidirectional DC-DC converters. Subsequently, existing research results and problems with isolated bidirectional DC-DC converters are reviewed. Finally, future trends in the development of isolated bidirectional DC-DC converters for data centers are presented, which offer valuable insights for solving engineering obstacles and future research directions in the field.

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“…The only two online monitoring methods (partial discharge method and shield cage potential method) have relatively high detection limits and are susceptible to various electromagnetic pulses within the power system, leading to misjudgments. [6][7][8] Therefore, there is a critical need for a reliable online monitoring system for vacuum circuit breakers. Furthermore, the measurement of vacuum levels represents a major obstacle to the widespread adoption of highvoltage vacuum switches in power transmission systems.…”

Section: Introductionmentioning

confidence: 99%