EPE Association: EPE 2020 - DS1a-2: Passive Components-2

EPE 2020 - DS1a-2: Passive Components-2
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 01: Devices, Packaging and System Integration > EPE 2020 - DS1a-2: Passive Components-2

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   Comparison and optimization of magnetically coupled and non-coupled magnetic devices in interleaved operation
By Peter ZACHARIAS [View]
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Abstract: Interleaved operating DC/DC converters with coupled magnetic elements are well known as an option for high power density conversion systems. However, the design of the magnetic coupling element is usually made as single device, considering the sum of DC and AC flux swing for sizing. The presented analysis shows that it is possible to separate the magnetic AC and DC flux to different magnetic core elements with specific materials to minimize the respective losses. The approach, modelling and achievable volume reduction for non-coupled and coupled schemes are presented and compared in this paper.

   Iron Loss Characteristics of MnZn Ferrites under GaN Inverter excitation in the MHz Order
By Wilmar MARTINEZ [View]
[Download]

Abstract: More and more a big portion of all electrical power is transported and distributed through a power electronics converter, which comprises invariably magnetic components. In most cases, such components are made with Ferrites which introduce a certain amount of losses and weight/volume to the system. In addition, there is a need for outstanding magnetic components with low-loss and high dense properties able to work under the specifications that novel Wide Bandgap semiconductors demand: high frequency operation, fast transients, compactness, etc. However, there is not a clear ground about how magnetics components operate at high frequencies and under the influence of these semiconductors. Then, magnetic characterization of ferrites under distinct conditions is essential to understand the operation of these components, especially in the MHz order. Harmonic content, introduced by the switching of the fast semiconductors, and fast transients raise higher challenges for an accurate identification of the magnetic properties. Therefore, having a complete understanding of how these harmonic contents affect the operation of the magnetic components could be beneficial for improving the material selection and design procedures themselves. This paper studies the effect of Gallium Nitride inverter conditions (deadtime, fast transients, fundamental frequencies, etc.) on iron loss characterization procedures of Ferrite materials.

   Loss distribution comparison of variable and fixed inductor DAB converters
By Erik SMAILUS [View]
[Download]

Abstract: This paper deals with the aspects of loss distribution and magnitude under heavy step-down conditionscomparing low load and full load operating points of a DAB converter with fixed and variable inductor.A simulation model concerning the losses in semiconductors and magnetic components is developedand verified by the overall losses using accurate DC measurements. Changes in loss distribution arediscussed comparing both inductor variants in the DAB setup.

   Powder Injection Molding in the Fabrication of Soft Ferrite material for Power Electronics
By Jean Sylvio NGOUA TEU MAGAMBO [View]
[Download]

Abstract: This work presents the Powder Injection Molding (PIM) process for the fabrication of soft ferrite material. The traditional method commonly used by manufacturer is pressing which was compared to PIM focusing on core losses and permeability.

EPE 2020 - DS1a-2: Passive Components-2
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 01: Devices, Packaging and System Integration > EPE 2020 - DS1a-2: Passive Components-2
	[return to parent folder]

	Comparison and optimization of magnetically coupled and non-coupled magnetic devices in interleaved operation By Peter ZACHARIAS	[View] [Download]
Abstract: Interleaved operating DC/DC converters with coupled magnetic elements are well known as an option for high power density conversion systems. However, the design of the magnetic coupling element is usually made as single device, considering the sum of DC and AC flux swing for sizing. The presented analysis shows that it is possible to separate the magnetic AC and DC flux to different magnetic core elements with specific materials to minimize the respective losses. The approach, modelling and achievable volume reduction for non-coupled and coupled schemes are presented and compared in this paper.

	Iron Loss Characteristics of MnZn Ferrites under GaN Inverter excitation in the MHz Order By Wilmar MARTINEZ	[View] [Download]
Abstract: More and more a big portion of all electrical power is transported and distributed through a power electronics converter, which comprises invariably magnetic components. In most cases, such components are made with Ferrites which introduce a certain amount of losses and weight/volume to the system. In addition, there is a need for outstanding magnetic components with low-loss and high dense properties able to work under the specifications that novel Wide Bandgap semiconductors demand: high frequency operation, fast transients, compactness, etc. However, there is not a clear ground about how magnetics components operate at high frequencies and under the influence of these semiconductors. Then, magnetic characterization of ferrites under distinct conditions is essential to understand the operation of these components, especially in the MHz order. Harmonic content, introduced by the switching of the fast semiconductors, and fast transients raise higher challenges for an accurate identification of the magnetic properties. Therefore, having a complete understanding of how these harmonic contents affect the operation of the magnetic components could be beneficial for improving the material selection and design procedures themselves. This paper studies the effect of Gallium Nitride inverter conditions (deadtime, fast transients, fundamental frequencies, etc.) on iron loss characterization procedures of Ferrite materials.

	Loss distribution comparison of variable and fixed inductor DAB converters By Erik SMAILUS	[View] [Download]
Abstract: This paper deals with the aspects of loss distribution and magnitude under heavy step-down conditionscomparing low load and full load operating points of a DAB converter with fixed and variable inductor.A simulation model concerning the losses in semiconductors and magnetic components is developedand verified by the overall losses using accurate DC measurements. Changes in loss distribution arediscussed comparing both inductor variants in the DAB setup.

	Powder Injection Molding in the Fabrication of Soft Ferrite material for Power Electronics By Jean Sylvio NGOUA TEU MAGAMBO	[View] [Download]
Abstract: This work presents the Powder Injection Molding (PIM) process for the fabrication of soft ferrite material. The traditional method commonly used by manufacturer is pressing which was compared to PIM focusing on core losses and permeability.