EPE Association: EPE 2020 - DS3k: Power Supplies

EPE 2020 - DS3k: Power Supplies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 07: Power Supplies > EPE 2020 - DS3k: Power Supplies

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   A Series-Parallel-Type Resonant Circuit Wireless Power Transfer System with a Dual Active Bridge DC-DC Converter
By Kohei SUGIYAMA [View]
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Abstract: This paper presents an equivalent circuit for a non-tight transformer of a series-parallel-type resonant wireless power transfer system. The proposed non-tight transformer circuit is designed as an equation of state with a coupling coefficient parameter and it enables to consider its fluctuation while performing a simulation. In addition, we present a wireless power transfer system with a dual active bridge DC-DC converter. The proposed system synchronises by a phase-locked loop control system and transmits power. In order to confirm performances of the proposed system, we simulated a simulation of the system transfers power using a variable coupling coefficient and a simulation of the system transfers power bi-directionally. In addition, the proposed system adopted pulse width control can improve distortions of AC voltage and current when the dual active bridge DC-DC converter of the proposed system is supplied with different DC voltage sources. From the simulations, we confirm good results and proposed the wireless power transfer with a dual active bridge DC-DC converter that realizes high efficiency power transmission.

   DCM Operation of Single-Switch High Step-up DC-DC Converter with Three-winding Coupled Inductor
By Masataka MINAMI [View]
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Abstract: We presented a novel high step-up DC-DC converter, which has only one active switch and a threewinding coupled inductor. And, the previous research showed the CCM operation and steady state principle of the proposed converter. This paper describes the DCM operation of the proposed converter and shows the experimental results.

   Improved High Step-Up Boost-based DC/DC Converter with Built-In Transformer and Active Clamp for DC Microgrids
By KONSTANTINOS ZAOSKOUFIS [View]
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Abstract: In this paper, an improved non-isolated high step-up (HSU) converter which consists of an inductor, a built-in transformer and a voltage multiplier is presented. The energy stored in the leakage inductance is recycled with the use of an active clamp circuit. The voltage stress on both power switches is also reduced, therefore, power switches with low resistance RDS,on can be used to reduce the conduction losses. To verify the performance of the presented converter, a 250W laboratory prototype circuit is implemented. The results validate the proper operation and the practicability of the presented high step-up converter.

   Improved methodology for predicting correlated color temperature in mixed LED lighting sources
By Thais BOLZAN [View]
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Abstract: This paper proposes an improved methodology for predicting the correlated color temperature (CCT) of a system comprised of one or more LEDs by using just data obtained from the datasheet. Experimental results obtained for two LEDs of distinct CCTs (6500K and 4000K) validate the proposed methodology.

   Measurement and Calculation Method of Wireless Power Transfer Coil Equivalent Series Resistance under the Vehicle
By NORIHITO KIMURA [View]
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Abstract: In order to design a highly efficient wireless power transfer (WPT) for plug-in hybrid vehicles (PHVs), a novel methodology is proposed to measure the efficiency of power transfer between transmitting and receiving coils and to calculate the equivalent series resistance (ESR) of coils under actual vehicle mounting. The proposed measurement method can accurately measure the ESR of coils at the rated current that cannot be measured by low-current general-purpose instruments such as LCR meters. The proposed calculation method can accurately calculate the ESR of WPT coils under the vehicle such as the steel body and the muffler. Experimental results under the vehicle verify the accuracy of their proposed methods.

EPE 2020 - DS3k: Power Supplies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 07: Power Supplies > EPE 2020 - DS3k: Power Supplies
	[return to parent folder]

	A Series-Parallel-Type Resonant Circuit Wireless Power Transfer System with a Dual Active Bridge DC-DC Converter By Kohei SUGIYAMA	[View] [Download]
Abstract: This paper presents an equivalent circuit for a non-tight transformer of a series-parallel-type resonant wireless power transfer system. The proposed non-tight transformer circuit is designed as an equation of state with a coupling coefficient parameter and it enables to consider its fluctuation while performing a simulation. In addition, we present a wireless power transfer system with a dual active bridge DC-DC converter. The proposed system synchronises by a phase-locked loop control system and transmits power. In order to confirm performances of the proposed system, we simulated a simulation of the system transfers power using a variable coupling coefficient and a simulation of the system transfers power bi-directionally. In addition, the proposed system adopted pulse width control can improve distortions of AC voltage and current when the dual active bridge DC-DC converter of the proposed system is supplied with different DC voltage sources. From the simulations, we confirm good results and proposed the wireless power transfer with a dual active bridge DC-DC converter that realizes high efficiency power transmission.

	DCM Operation of Single-Switch High Step-up DC-DC Converter with Three-winding Coupled Inductor By Masataka MINAMI	[View] [Download]
Abstract: We presented a novel high step-up DC-DC converter, which has only one active switch and a threewinding coupled inductor. And, the previous research showed the CCM operation and steady state principle of the proposed converter. This paper describes the DCM operation of the proposed converter and shows the experimental results.

	Improved High Step-Up Boost-based DC/DC Converter with Built-In Transformer and Active Clamp for DC Microgrids By KONSTANTINOS ZAOSKOUFIS	[View] [Download]
Abstract: In this paper, an improved non-isolated high step-up (HSU) converter which consists of an inductor, a built-in transformer and a voltage multiplier is presented. The energy stored in the leakage inductance is recycled with the use of an active clamp circuit. The voltage stress on both power switches is also reduced, therefore, power switches with low resistance RDS,on can be used to reduce the conduction losses. To verify the performance of the presented converter, a 250W laboratory prototype circuit is implemented. The results validate the proper operation and the practicability of the presented high step-up converter.

	Improved methodology for predicting correlated color temperature in mixed LED lighting sources By Thais BOLZAN	[View] [Download]
Abstract: This paper proposes an improved methodology for predicting the correlated color temperature (CCT) of a system comprised of one or more LEDs by using just data obtained from the datasheet. Experimental results obtained for two LEDs of distinct CCTs (6500K and 4000K) validate the proposed methodology.

	Measurement and Calculation Method of Wireless Power Transfer Coil Equivalent Series Resistance under the Vehicle By NORIHITO KIMURA	[View] [Download]
Abstract: In order to design a highly efficient wireless power transfer (WPT) for plug-in hybrid vehicles (PHVs), a novel methodology is proposed to measure the efficiency of power transfer between transmitting and receiving coils and to calculate the equivalent series resistance (ESR) of coils under actual vehicle mounting. The proposed measurement method can accurately measure the ESR of coils at the rated current that cannot be measured by low-current general-purpose instruments such as LCR meters. The proposed calculation method can accurately calculate the ESR of WPT coils under the vehicle such as the steel body and the muffler. Experimental results under the vehicle verify the accuracy of their proposed methods.