EPE Association: EPE 2020 - DS3l-2: Power Converters for Electric Vehicles-2

EPE 2020 - DS3l-2: Power Converters for Electric Vehicles-2
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 08: Electric Vehicle Propulsion Systems and their Energy Storage > EPE 2020 - DS3l-2: Power Converters for Electric Vehicles-2

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   A GaN-based DC/DC converter for e-vehicles applications
By Eduardo DE OLIVEIRA [View]
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Abstract: This paper presents a 4 kW GaN-based galvanically isolated bidirectional DC/DC converter suitable for on-board auxiliary power supply systems, interconnecting the HV battery with the LV power system. To enable the trend towards higher levels of electrification, a second LV level of 48 V is introduced to supply the high-power consumers, relieving the 12 V grid on the one hand and/or avoiding using additional costly isolated converters connected to the HV batteries on the other. The built converter prototypes aim to demonstrate higher efficiency, compactness and lower filter requirements of the proposed circuit.

   Design by Optimization of multiphase inverter for electric vehicle drive
By Yvan AVENAS [View]
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Abstract: This paper proposes a gradient-based design optimization of multiphase inverter for electric vehicle application. The aim is to optimize the total volume of the converter taking account the number of phases, the sizing of dc-link capacitor and total surface of semi-conductors. The developed method shows that the optimum design is given for a number of phases more than three.

   Design of a Dual Active Bridge Converter for On-Board Vehicle Chargers using GaN and into Transformer Integrated Series Inductance
By Konstantin SIEBKE [View]
[Download]

Abstract: In this paper a DAB using GaN and an into the transformer integrated series inductance are designed foran on-board vehicle charger. The DAB design and a GaN full bridge design are described. The parasiticdrain source capacitance is measured and considered in the DAB design to determine the zero voltageswitching (ZVS) boundaries. Three different transformer setups are compared and evaluated in praxis.Finally a map of losses and efficiency is created using once single phase shift (SPS) modulation and oncetriple phase shift (TPS) modulation.

   Smart fuel cell module (6.5 kW) for a range extender application
By Sylvain MERCIER [View]
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Abstract: To extend the autonomy of electrical vehicles, fuel cells are a possible complementary power source. This source must be electrically adapted through a DC-DC converter and mechanically easily integrated. This paper shows the design of a 6-phase interleaved boost converter (6.5 kW max.) for this application. Due to integration constraints, the converter should be mounted on the terminal plates of the fuel cell and cooled by the same cooling circuit. To dissipate the losses of the semiconductors, the terminal plate embeds 30 cooling channels under the printed circuit board. The converter efficiency has been measured up to 96.5\% for a minimum output power (1.5 kW) and a minimum output voltage (240 V). To move forward the design of the smart fuel cell module (i.e. with power electronics), a new development is ongoing for an aircraft application by designing a specific and optimized cooling system.

EPE 2020 - DS3l-2: Power Converters for Electric Vehicles-2
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2020 ECCE Europe - Conference > EPE 2020 - Topic 08: Electric Vehicle Propulsion Systems and their Energy Storage > EPE 2020 - DS3l-2: Power Converters for Electric Vehicles-2
	[return to parent folder]

	A GaN-based DC/DC converter for e-vehicles applications By Eduardo DE OLIVEIRA	[View] [Download]
Abstract: This paper presents a 4 kW GaN-based galvanically isolated bidirectional DC/DC converter suitable for on-board auxiliary power supply systems, interconnecting the HV battery with the LV power system. To enable the trend towards higher levels of electrification, a second LV level of 48 V is introduced to supply the high-power consumers, relieving the 12 V grid on the one hand and/or avoiding using additional costly isolated converters connected to the HV batteries on the other. The built converter prototypes aim to demonstrate higher efficiency, compactness and lower filter requirements of the proposed circuit.

	Design by Optimization of multiphase inverter for electric vehicle drive By Yvan AVENAS	[View] [Download]
Abstract: This paper proposes a gradient-based design optimization of multiphase inverter for electric vehicle application. The aim is to optimize the total volume of the converter taking account the number of phases, the sizing of dc-link capacitor and total surface of semi-conductors. The developed method shows that the optimum design is given for a number of phases more than three.

	Design of a Dual Active Bridge Converter for On-Board Vehicle Chargers using GaN and into Transformer Integrated Series Inductance By Konstantin SIEBKE	[View] [Download]
Abstract: In this paper a DAB using GaN and an into the transformer integrated series inductance are designed foran on-board vehicle charger. The DAB design and a GaN full bridge design are described. The parasiticdrain source capacitance is measured and considered in the DAB design to determine the zero voltageswitching (ZVS) boundaries. Three different transformer setups are compared and evaluated in praxis.Finally a map of losses and efficiency is created using once single phase shift (SPS) modulation and oncetriple phase shift (TPS) modulation.

	Smart fuel cell module (6.5 kW) for a range extender application By Sylvain MERCIER	[View] [Download]
Abstract: To extend the autonomy of electrical vehicles, fuel cells are a possible complementary power source. This source must be electrically adapted through a DC-DC converter and mechanically easily integrated. This paper shows the design of a 6-phase interleaved boost converter (6.5 kW max.) for this application. Due to integration constraints, the converter should be mounted on the terminal plates of the fuel cell and cooled by the same cooling circuit. To dissipate the losses of the semiconductors, the terminal plate embeds 30 cooling channels under the printed circuit board. The converter efficiency has been measured up to 96.5\% for a minimum output power (1.5 kW) and a minimum output voltage (240 V). To move forward the design of the smart fuel cell module (i.e. with power electronics), a new development is ongoing for an aircraft application by designing a specific and optimized cooling system.