EPE Association: EPE 2022 - DS3s: Contactless (Wireless) Power Supply

EPE 2022 - DS3s: Contactless (Wireless) Power Supply
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2022 - DS3s: Contactless (Wireless) Power Supply

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   Adaptive Dead-Time Control in a Resonant Wireless Power Transfer System
By Tim KRIGAR [View]
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Abstract: The influence of parasitic capacitances and of the output load on the ZVS behavior of a resonant wireless power transfer system is analyzed in this work. For this, the charging process of the output capacitors of a GaN-based inverting half bridge is described in detail. Furthermore, the influence of the parasitic capacitances and of the load on the resonant current is discussed. The analyzed system has a peak efficiency of 92.9 \% at 500 W with an operating frequency of 2 MHz. Based on the ZVS analysis, an adaptive dead-time control is presented to raise the average efficiency. For example, the efficiency can be raised by 0.5 \% while transferring 250 W.

   Design and efficiency analysis of an LCL Capacitive Power Transfer system with Load-Independent ZPA
By Francesco MUSOLINO [View]
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Abstract: This paper proposes a design procedure of an LCL compensation circuit for a capacitive power transfer(CPT) system. The design enables the achievement of load independent zero phase angle (ZPA) operation in order to increase the overall efficiency of the system by using a minimum number of compensation components. The proposed approach is supported and validated by circuital simulations and confirmed by the results of experimental tests carried out on a specifically designed prototype.

EPE 2022 - DS3s: Contactless (Wireless) Power Supply
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2022 - DS3s: Contactless (Wireless) Power Supply
	[return to parent folder]

	Adaptive Dead-Time Control in a Resonant Wireless Power Transfer System By Tim KRIGAR	[View] [Download]
Abstract: The influence of parasitic capacitances and of the output load on the ZVS behavior of a resonant wireless power transfer system is analyzed in this work. For this, the charging process of the output capacitors of a GaN-based inverting half bridge is described in detail. Furthermore, the influence of the parasitic capacitances and of the load on the resonant current is discussed. The analyzed system has a peak efficiency of 92.9 \% at 500 W with an operating frequency of 2 MHz. Based on the ZVS analysis, an adaptive dead-time control is presented to raise the average efficiency. For example, the efficiency can be raised by 0.5 \% while transferring 250 W.

	Design and efficiency analysis of an LCL Capacitive Power Transfer system with Load-Independent ZPA By Francesco MUSOLINO	[View] [Download]
Abstract: This paper proposes a design procedure of an LCL compensation circuit for a capacitive power transfer(CPT) system. The design enables the achievement of load independent zero phase angle (ZPA) operation in order to increase the overall efficiency of the system by using a minimum number of compensation components. The proposed approach is supported and validated by circuital simulations and confirmed by the results of experimental tests carried out on a specifically designed prototype.