EPE Association: EPE 2013 - LS5g: Contactless Power Supplies

EPE 2013 - LS5g: Contactless Power Supplies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 17: Power supplies > EPE 2013 - LS5g: Contactless Power Supplies

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   LOW AND MEDIUM FREQUENCY CONTACTLESS POWER TRANSFER SYSTEM FOR PIEZOELECTRIC ACTUATORS IN AERONAUTICAL APPLICATIONS
By Ekaitz GOENAGA, Jean-Paul FERRIEUX, Jean BARBAROUX, Gatien KWIMANG [View]
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Abstract: Two contactless power transfer systems are presented for piezoelectric actuators that need to be supplied by a modular low frequency signal. The first one represents a low frequency topology and the second one a novel medium frequency topology which tries to reduce the volume of contactless power transformer using resonant strategies. The comparison between both of them has been done in electrical and mechanical terms such as the THD at output voltage, system losses or transformer’s volume.

   Switching Surge Reduction of A Bi-Directional Dual Active Bridge DC-DC Converter with A Digital Operation
By Mika TAKASAKI, Yoichi ISHIZUKA, Tamotsu NINOMIYA, Yutaka FURUKAWA, Toshiro HIROSE [View]
[Download]

Abstract: Recently, the bi-directional dc-dc converter has been focused on because of the huge demand for diversification of power supply network including battery. The dual active bridge (DAB) dc-dc converter is one of the most popular circuits for bi-directional applications because of its simple structure. However, power efficiency at light load is the intrinsic problem of a bi-directional DAB DC-DC converter. In this paper, the simple solution with digital operation for the problem is proposed and experiments are performed with 1kW system. This method can reduce a switching surge without other circuits such as snubber and improve power efficiency at light load. Therefore it can reduce loss of switching surge, and improve power efficiency. From the results, 37\% maximum power efficiency improvement at light load is confirmed. Furthermore, this method is capable for control in the conventional method in the heavy load range. Consequently, it is possible to reduce the switching surge and realize high power efficiency in a wide load range.

   Use of genetic algorithms to design and optimize a high-efficiency LCIPT system
By Gatien KWIMANG, Jean-Paul FERRIEUX, Gerard MEUNIER [View]
[Download]

Abstract: This article deals with the design of loosely coupled inductive power transfer (LCIPT) systems applied to electric vehicle charging, and will focus on the optimization of a high-efficiency large air-gap transformer with the help of Genetic Algorithms (GA), and the choice of the most appropriate resonant converter topology. In this paper, a model at first harmonic of a series-series resonant converter (SSRC) and one of a series-parallel resonant converter (SPRC) are developed. It is shown that the choice of the resonant converter has a major influence on the transformer design. An optimization of an 18cm air-gap I-shaped transformer is performed in order to minimize its overall volume with efficiency greater than 98\%.

EPE 2013 - LS5g: Contactless Power Supplies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 17: Power supplies > EPE 2013 - LS5g: Contactless Power Supplies
	[return to parent folder]

	LOW AND MEDIUM FREQUENCY CONTACTLESS POWER TRANSFER SYSTEM FOR PIEZOELECTRIC ACTUATORS IN AERONAUTICAL APPLICATIONS By Ekaitz GOENAGA, Jean-Paul FERRIEUX, Jean BARBAROUX, Gatien KWIMANG	[View] [Download]
Abstract: Two contactless power transfer systems are presented for piezoelectric actuators that need to be supplied by a modular low frequency signal. The first one represents a low frequency topology and the second one a novel medium frequency topology which tries to reduce the volume of contactless power transformer using resonant strategies. The comparison between both of them has been done in electrical and mechanical terms such as the THD at output voltage, system losses or transformer’s volume.

	Switching Surge Reduction of A Bi-Directional Dual Active Bridge DC-DC Converter with A Digital Operation By Mika TAKASAKI, Yoichi ISHIZUKA, Tamotsu NINOMIYA, Yutaka FURUKAWA, Toshiro HIROSE	[View] [Download]
Abstract: Recently, the bi-directional dc-dc converter has been focused on because of the huge demand for diversification of power supply network including battery. The dual active bridge (DAB) dc-dc converter is one of the most popular circuits for bi-directional applications because of its simple structure. However, power efficiency at light load is the intrinsic problem of a bi-directional DAB DC-DC converter. In this paper, the simple solution with digital operation for the problem is proposed and experiments are performed with 1kW system. This method can reduce a switching surge without other circuits such as snubber and improve power efficiency at light load. Therefore it can reduce loss of switching surge, and improve power efficiency. From the results, 37\% maximum power efficiency improvement at light load is confirmed. Furthermore, this method is capable for control in the conventional method in the heavy load range. Consequently, it is possible to reduce the switching surge and realize high power efficiency in a wide load range.

	Use of genetic algorithms to design and optimize a high-efficiency LCIPT system By Gatien KWIMANG, Jean-Paul FERRIEUX, Gerard MEUNIER	[View] [Download]
Abstract: This article deals with the design of loosely coupled inductive power transfer (LCIPT) systems applied to electric vehicle charging, and will focus on the optimization of a high-efficiency large air-gap transformer with the help of Genetic Algorithms (GA), and the choice of the most appropriate resonant converter topology. In this paper, a model at first harmonic of a series-series resonant converter (SSRC) and one of a series-parallel resonant converter (SPRC) are developed. It is shown that the choice of the resonant converter has a major influence on the transformer design. An optimization of an 18cm air-gap I-shaped transformer is performed in order to minimize its overall volume with efficiency greater than 98\%.