EPE Association: EPE 2023 - LS5b: Power Supplies and Industry-Specific Applications

EPE 2023 - LS5b: Power Supplies and Industry-Specific Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2023 - LS5b: Power Supplies and Industry-Specific Applications

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   Coupling Capacitance Characteristics and Design Optimization Method of CT-Type Isolated Power Supply for High-voltage SiC Devices
By Haibo TANG, Xiaojie FU, Yihui ZHAO, Yihao DU, Yujia GUO, Jianyu PAN [View]
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Abstract: Gate driver's isolated power supplies with low coupling capacitance are critically important to reduce the dv/dt noise for high-voltage SiC devices' applications. This paper investigates coupling capacitance characteristics and proposes an optimal design method for the isolated power supply with the novel current-transformer (CT) structure. Firstly, this paper analyzes the structure of CT-type isolated power supply and establishes a 3D simulation model by ANSYS Q3D. Then influence characteristics of CT-type's critical parameters, including the magnetic core's diameter, height, and winding structure, are studied and clarified. The optimization design rule is proposed to minimize the coupling capacitance. Finally, a testbed of a CT-type power supply is established to validate the effectiveness of the theory. Results show that the coupling capacitance of the CT-type power supply can be suppressed to a small value of 0.74 pF, which achieves a 70\% reduction compared to commercial isolated power supply RHV3 series.

   High-power converter systems for hydrogen production
By Martin GESKE, Sebastian HILDEBRANDT, Kamran JALILI, Christian KELLER [View]
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Abstract: Hydrogen production from renewable energy through water electrolysis is one valuable option to reduce CO2 emissions. More and larger electrolysis systems can potentially cover an increasing demand for hydrogen. In this context, thyristor-based and voltage-source converters are presented and discussed for power ratings in the high megawatt range. The basic converter types are analyzed with a focus on the electrical characteristics and the system design. The described differences are significant for systems that consist of many electrolyzer units with ratings up to a hundred megawatts and more.

   Non-Coherent Power Combining for Self-Tuning Omnidirectional Wireless Power Transfer
By Yining LIU, Nam HA-VAN, Prasad JAYATHURATHNAGE, Jorma KYYRÄ, Sergei TRETYAKOV [View]
[Download]

Abstract: This paper introduces a new method for realizing truly omnidirectional WPT without using any active control. The proposed method uses non-coherent feeds for two or more transmitting antennas, which ensures absence of any blind spots for power reception around the transmitting device. We provide analytical insights, supported by simulations and experiments, to validate our approach.

EPE 2023 - LS5b: Power Supplies and Industry-Specific Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2023 ECCE Europe - Conference > EPE 2023 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2023 - LS5b: Power Supplies and Industry-Specific Applications
	[return to parent folder]

	Coupling Capacitance Characteristics and Design Optimization Method of CT-Type Isolated Power Supply for High-voltage SiC Devices By Haibo TANG, Xiaojie FU, Yihui ZHAO, Yihao DU, Yujia GUO, Jianyu PAN	[View] [Download]
Abstract: Gate driver's isolated power supplies with low coupling capacitance are critically important to reduce the dv/dt noise for high-voltage SiC devices' applications. This paper investigates coupling capacitance characteristics and proposes an optimal design method for the isolated power supply with the novel current-transformer (CT) structure. Firstly, this paper analyzes the structure of CT-type isolated power supply and establishes a 3D simulation model by ANSYS Q3D. Then influence characteristics of CT-type's critical parameters, including the magnetic core's diameter, height, and winding structure, are studied and clarified. The optimization design rule is proposed to minimize the coupling capacitance. Finally, a testbed of a CT-type power supply is established to validate the effectiveness of the theory. Results show that the coupling capacitance of the CT-type power supply can be suppressed to a small value of 0.74 pF, which achieves a 70\% reduction compared to commercial isolated power supply RHV3 series.

	High-power converter systems for hydrogen production By Martin GESKE, Sebastian HILDEBRANDT, Kamran JALILI, Christian KELLER	[View] [Download]
Abstract: Hydrogen production from renewable energy through water electrolysis is one valuable option to reduce CO2 emissions. More and larger electrolysis systems can potentially cover an increasing demand for hydrogen. In this context, thyristor-based and voltage-source converters are presented and discussed for power ratings in the high megawatt range. The basic converter types are analyzed with a focus on the electrical characteristics and the system design. The described differences are significant for systems that consist of many electrolyzer units with ratings up to a hundred megawatts and more.

	Non-Coherent Power Combining for Self-Tuning Omnidirectional Wireless Power Transfer By Yining LIU, Nam HA-VAN, Prasad JAYATHURATHNAGE, Jorma KYYRÄ, Sergei TRETYAKOV	[View] [Download]
Abstract: This paper introduces a new method for realizing truly omnidirectional WPT without using any active control. The proposed method uses non-coherent feeds for two or more transmitting antennas, which ensures absence of any blind spots for power reception around the transmitting device. We provide analytical insights, supported by simulations and experiments, to validate our approach.