EPE Association: EPE 2023 - DS2p: Wireless Power Transfer Systems

EPE 2023 - DS2p: Wireless Power Transfer Systems
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 - DS2p: Wireless Power Transfer Systems

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   A Multi-MHz WPT System with 1 Transmitter and 6 Receivers in three levels
By Alejandro LLOP, Jesús María GONDRA, Salvador CEBALLOS [View]
[Download]

Abstract: The design and operation of a new Wireless Power System based on magnetic resonance at 13.56 MHz and composed of seven devices is addressed in this paper, including the design of the coils, sensitivity analysis, control strategy and optimization in terms of efficiency, and validated both analytically and by simulation.

   An Improved Peak Voltage Calculation Method for Compensation Components in S-S and LCC-S Compensated Wireless Power Transfer Systems
By Guangyao YU, Pengcheng YE, Francesca GRAZIAN, Jianning DONG, Thiago Batista SOEIRO, Pavol BAUER [View]
[Download]

Abstract: The pursuit of battery charging technology for electric vehicle (EV) has led to extensive research on the inductive-based wireless power transfer (WPT) systems. In this paper, the compensation component (including coils) stresses will be studied in two commonly adopted compensation topologies, namely S-S and LCC-S compensations. Due to the peak voltage calculation inaccuracy for certain components based on conventional fundamental frequency analysis, an improved peak voltage calculation method is introduced in closed form, which is proved to be more accurate by both simulation and experiments.

   Comparative Analysis of Coil Parameters for the Optimization of Coupling Factor
By Tania GOMEZ, Hassan PERVAIZ, Camilo CORTES, Wilmar MARTINEZ [View]
[Download]

Abstract: This paper presents a methodology for designing a wireless power transfer (WPT) system, focusingon optimizing the electromagnetic shielding using finite element simulation software. The study evaluated different combinations of coils and shielding systems to identify an optimal design. Results demonstrate the effectiveness of the proposed methodology in achieving an optimal design that maximizes power transfer efficiency while ensuring safe exposure limits to electromagnetic fields. The proposed methodology provides a practical approach to the design of WPT systems with improvedperformance and safety.

   Comparison of SS and SP Circuit Topologies for Wireless Power Transfer Systems Capable of Bi-directional Power Transmission
By Hiroki SUGIHARA, Morito OTA, Yuki SIMIZU, Yoshitaka KAWABATA [View]
[Download]

Abstract: Various circuit topologies are possible for magnetic resonance wireless power transfer, depending on how the capacitors are connected. When using a DAB-type DC/DC converter that supports bi-directional power flow, the SP-type requires an additional inductor. This paper compares the power transmission characteristics of the SS and SP type in this setup. The power transmission efficiencies of the SS and SP types for each coupling factor show considerable similarity. In contrast, the SP-type wireless power transfer system integrated with a DAB-type DC/DC converter can provide bi-directional power transmission that is resistant to misalignment.

   Design and Experimental Verification of SP-Type Resonant Wireless Power Transfer System Capable for Bidirectional Power Transmission
By Kohei SUGIYAMA, Morito OTA, Yuki SHIMIZU, Yoshitaka KAWABATA [View]
[Download]

Abstract: This study proposes a new design for a wireless power transmission system. We introduce the theory of nontight coupled transformers and investigate a method for designing the parameters of an SP-type wireless power transfer (WPT) system. Using the design method, we fabricate a WPT experimental system combining a series-parallel resonant circuit and a dual active bridge (DAB)-type DC/DC converter. The fabricated system was able to transmit power with high efficiency. The system also achieved bi-directional power transmission, which is an advantage of DAB-type DC/DC converters. Power transmission was stable even when the coupling coefficient varied, demonstrating the practicality of the proposed theory and system.

   Effect of the Forward and Reverse Conduction Resistance of SiC MOSFET on the Harmonic Voltage of the Full-Bridge Inverters of Wireless Power Systems for Electric Vehicles and Its Suppression Method
By Tatsuya YANAGI, Ken NAKAHARA, Osamu SHIMIZU, Hiroshi FUJIMOTO [View]
[Download]

Abstract: This paper clarifies the mechanism behind harmonic generation, linked to device characteristics in the output voltage of phase-shift controlled inverters. The primary cause is a fluctuation in conduction resistance related to dead time, validated by theoretical analysis, simulation, and empirical testing. These harmonics can be diminished by calibrating the resistance of switching devices to bring the forward and reverse resistance values into closer alignment.

   The Voltage Control and the Detuned Design for Handshaking of an Inductive Power Transfer System with Adjacent Units
By Shuxin CHEN, Yaohua LI, Junming ZENG, Yi TANG [View]
[Download]

Abstract: For wireless charging systems, the pairing of radio frequency modules can fail when there are adjacent units. Coil-based pairing methods can address the issue but may experience high currents. This article introduces the voltage control and the detuned design for handshaking considering current suppression.

EPE 2023 - DS2p: Wireless Power Transfer Systems
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 - DS2p: Wireless Power Transfer Systems
	[return to parent folder]

	A Multi-MHz WPT System with 1 Transmitter and 6 Receivers in three levels By Alejandro LLOP, Jesús María GONDRA, Salvador CEBALLOS	[View] [Download]
Abstract: The design and operation of a new Wireless Power System based on magnetic resonance at 13.56 MHz and composed of seven devices is addressed in this paper, including the design of the coils, sensitivity analysis, control strategy and optimization in terms of efficiency, and validated both analytically and by simulation.

	An Improved Peak Voltage Calculation Method for Compensation Components in S-S and LCC-S Compensated Wireless Power Transfer Systems By Guangyao YU, Pengcheng YE, Francesca GRAZIAN, Jianning DONG, Thiago Batista SOEIRO, Pavol BAUER	[View] [Download]
Abstract: The pursuit of battery charging technology for electric vehicle (EV) has led to extensive research on the inductive-based wireless power transfer (WPT) systems. In this paper, the compensation component (including coils) stresses will be studied in two commonly adopted compensation topologies, namely S-S and LCC-S compensations. Due to the peak voltage calculation inaccuracy for certain components based on conventional fundamental frequency analysis, an improved peak voltage calculation method is introduced in closed form, which is proved to be more accurate by both simulation and experiments.

	Comparative Analysis of Coil Parameters for the Optimization of Coupling Factor By Tania GOMEZ, Hassan PERVAIZ, Camilo CORTES, Wilmar MARTINEZ	[View] [Download]
Abstract: This paper presents a methodology for designing a wireless power transfer (WPT) system, focusingon optimizing the electromagnetic shielding using finite element simulation software. The study evaluated different combinations of coils and shielding systems to identify an optimal design. Results demonstrate the effectiveness of the proposed methodology in achieving an optimal design that maximizes power transfer efficiency while ensuring safe exposure limits to electromagnetic fields. The proposed methodology provides a practical approach to the design of WPT systems with improvedperformance and safety.

	Comparison of SS and SP Circuit Topologies for Wireless Power Transfer Systems Capable of Bi-directional Power Transmission By Hiroki SUGIHARA, Morito OTA, Yuki SIMIZU, Yoshitaka KAWABATA	[View] [Download]
Abstract: Various circuit topologies are possible for magnetic resonance wireless power transfer, depending on how the capacitors are connected. When using a DAB-type DC/DC converter that supports bi-directional power flow, the SP-type requires an additional inductor. This paper compares the power transmission characteristics of the SS and SP type in this setup. The power transmission efficiencies of the SS and SP types for each coupling factor show considerable similarity. In contrast, the SP-type wireless power transfer system integrated with a DAB-type DC/DC converter can provide bi-directional power transmission that is resistant to misalignment.

	Design and Experimental Verification of SP-Type Resonant Wireless Power Transfer System Capable for Bidirectional Power Transmission By Kohei SUGIYAMA, Morito OTA, Yuki SHIMIZU, Yoshitaka KAWABATA	[View] [Download]
Abstract: This study proposes a new design for a wireless power transmission system. We introduce the theory of nontight coupled transformers and investigate a method for designing the parameters of an SP-type wireless power transfer (WPT) system. Using the design method, we fabricate a WPT experimental system combining a series-parallel resonant circuit and a dual active bridge (DAB)-type DC/DC converter. The fabricated system was able to transmit power with high efficiency. The system also achieved bi-directional power transmission, which is an advantage of DAB-type DC/DC converters. Power transmission was stable even when the coupling coefficient varied, demonstrating the practicality of the proposed theory and system.

	Effect of the Forward and Reverse Conduction Resistance of SiC MOSFET on the Harmonic Voltage of the Full-Bridge Inverters of Wireless Power Systems for Electric Vehicles and Its Suppression Method By Tatsuya YANAGI, Ken NAKAHARA, Osamu SHIMIZU, Hiroshi FUJIMOTO	[View] [Download]
Abstract: This paper clarifies the mechanism behind harmonic generation, linked to device characteristics in the output voltage of phase-shift controlled inverters. The primary cause is a fluctuation in conduction resistance related to dead time, validated by theoretical analysis, simulation, and empirical testing. These harmonics can be diminished by calibrating the resistance of switching devices to bring the forward and reverse resistance values into closer alignment.

	The Voltage Control and the Detuned Design for Handshaking of an Inductive Power Transfer System with Adjacent Units By Shuxin CHEN, Yaohua LI, Junming ZENG, Yi TANG	[View] [Download]
Abstract: For wireless charging systems, the pairing of radio frequency modules can fail when there are adjacent units. Coil-based pairing methods can address the issue but may experience high currents. This article introduces the voltage control and the detuned design for handshaking considering current suppression.