EPE Association: EPE 2015 - LS2b: EV's Battery Chargers

EPE 2015 - LS2b: EV's Battery Chargers
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 08: e-Mobility > EPE 2015 - LS2b: EV's Battery Chargers

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   2.4 kW prototype of on-road wireless power transfer: modelling concepts and practical implementation
By Antoine CAILLIEREZ [View]
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Abstract: This article focuses on Wireless Power Transfer, adapted to a dynamic charging infrastructure. Theauthors present a 2.4 kW prototype of electric road, designed according to an analysis based on phasordiagrams for the sizing of the key-elements of the SS resonant converter. It involves 50-cm squarecoils, with an air-gap of 15 cm between the ground side and the on-board side. The system developeduses a ZPA method control on both ground and on-board parts of the air-transformer, implementedwith a varying-frequency inverter. The experimental results show a very steady and stable on-boardvoltage despite the evolutive magnetic coupling with the displacement of the load, from -18 cm to18 cm. The efficiency of the system reaches 91 \% at the best operating point, and never falls below70 \% for the main regime. The efficiency is also very stable with displacement. The system has a gooddynamic response: the switch between one coil to the next during the motion of the load does notexceed 4 ms, and the adaptive response to a 280 W output power step lasts only 1.1 ms before thepermanent regime.

   A Three Phase Bidirectional V2G Interface Converter Based on SiC JFETs
By Sandra ZELJKOVIC [View]
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Abstract: This paper presents a 10kW three phase bidirectional on-board battery charger for use as a V2Ginterface in electric vehicles (EVs). The interface to the grid in the on-board charger is a three phaseIGBT-based boost converter, being in charge of the power factor correction (PFC). The interface to thebattery is an isolated dual active bridge (DAB) converter based on the silicon carbide (SiC) JFETs.1200V rated SiC JFETs enable both the operation at high voltage values in the DC link (above 500V)and high switching frequencies in the range from 50 to 150 kHz. Both high converter efficiency andcompact converter design can be achieved thanks to the application of these wide band gapcomponents. The control algorithm where PFC stage can control the flow of reactive power and theDAB the flow of active power between traction battery and the grid is presented and analyzed.

   Configurable Modular Multilevel Converter (CMMC) for Flexible EV
By Martel TSIRINOMENY [View]
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Abstract: Today, there is a long-term trend towards bi-directional and flexible charger functions for not only drawing current from the grid but also feeding excess energy back into it. The Configurable Modular Multilevel Converter (CMMC) offers a large flexibility in order to handle the different voltage levels and current intensities in electric vehicle's battery charging and discharging. Therefore, this paper is devoted to demonstrate the feasibility of the CMMC for Flexible Electric Vehicle (Flex-EV). It is a smart method to achieve a high power density and a compact power conversion for electric vehicles. The concept allows increasing the electric vehicle (EV) fault ride-through capabilities under damaged battery cells. It allows interfacing EV to worldwide charging infrastructures, meaning from standard household single phase socket to direct current (DC) ultra-fast charging stations. This concept is based on integration of the motor subsystem, the battery management subsystem as well as the universal and flexible charging subsystem. In fact, the power conversion consists of a modular multilevel converter (MMC) with split integrated storage (SIS) based on battery modules.

   FPGA-based Hardware-in-the-Loop Simulation of a Rectifier with Power Factor Correction
By Axel KIFFE [View]
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Abstract: Power electronic devices are growing in importance in automotive applications. Power converters are used in hybrid electric vehicles but also in other vehicle applications like electric steering systems for example. For testing electronic equipment, hardware-in-the-loop simulation is a today's standard method in the automotive industry. Hardware-in-the-loop simulation requires a real-time capable model of the plant but the development of those models of power electronic circuits is still an ambitious task due to the switching of the semiconductors devices. In this contribution, a FPGA-based hardware-in-the-loop simulation of a rectifier with power factor correction will be presented. First a short introduction on modelling methods for real-time simulation of power electronics and the rectifier with power factor correction is given. Furthermore, the modeling of the rectifier and the power factor correction stage and the simulation algorithm are described. Finally, the implementation of the hardware-in-the-loop simulation and measurement results from the real plant are presented and compared to the simulation results.

EPE 2015 - LS2b: EV's Battery Chargers
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 08: e-Mobility > EPE 2015 - LS2b: EV's Battery Chargers
	[return to parent folder]

	2.4 kW prototype of on-road wireless power transfer: modelling concepts and practical implementation By Antoine CAILLIEREZ	[View] [Download]
Abstract: This article focuses on Wireless Power Transfer, adapted to a dynamic charging infrastructure. Theauthors present a 2.4 kW prototype of electric road, designed according to an analysis based on phasordiagrams for the sizing of the key-elements of the SS resonant converter. It involves 50-cm squarecoils, with an air-gap of 15 cm between the ground side and the on-board side. The system developeduses a ZPA method control on both ground and on-board parts of the air-transformer, implementedwith a varying-frequency inverter. The experimental results show a very steady and stable on-boardvoltage despite the evolutive magnetic coupling with the displacement of the load, from -18 cm to18 cm. The efficiency of the system reaches 91 \% at the best operating point, and never falls below70 \% for the main regime. The efficiency is also very stable with displacement. The system has a gooddynamic response: the switch between one coil to the next during the motion of the load does notexceed 4 ms, and the adaptive response to a 280 W output power step lasts only 1.1 ms before thepermanent regime.

	A Three Phase Bidirectional V2G Interface Converter Based on SiC JFETs By Sandra ZELJKOVIC	[View] [Download]
Abstract: This paper presents a 10kW three phase bidirectional on-board battery charger for use as a V2Ginterface in electric vehicles (EVs). The interface to the grid in the on-board charger is a three phaseIGBT-based boost converter, being in charge of the power factor correction (PFC). The interface to thebattery is an isolated dual active bridge (DAB) converter based on the silicon carbide (SiC) JFETs.1200V rated SiC JFETs enable both the operation at high voltage values in the DC link (above 500V)and high switching frequencies in the range from 50 to 150 kHz. Both high converter efficiency andcompact converter design can be achieved thanks to the application of these wide band gapcomponents. The control algorithm where PFC stage can control the flow of reactive power and theDAB the flow of active power between traction battery and the grid is presented and analyzed.

	Configurable Modular Multilevel Converter (CMMC) for Flexible EV By Martel TSIRINOMENY	[View] [Download]
Abstract: Today, there is a long-term trend towards bi-directional and flexible charger functions for not only drawing current from the grid but also feeding excess energy back into it. The Configurable Modular Multilevel Converter (CMMC) offers a large flexibility in order to handle the different voltage levels and current intensities in electric vehicle's battery charging and discharging. Therefore, this paper is devoted to demonstrate the feasibility of the CMMC for Flexible Electric Vehicle (Flex-EV). It is a smart method to achieve a high power density and a compact power conversion for electric vehicles. The concept allows increasing the electric vehicle (EV) fault ride-through capabilities under damaged battery cells. It allows interfacing EV to worldwide charging infrastructures, meaning from standard household single phase socket to direct current (DC) ultra-fast charging stations. This concept is based on integration of the motor subsystem, the battery management subsystem as well as the universal and flexible charging subsystem. In fact, the power conversion consists of a modular multilevel converter (MMC) with split integrated storage (SIS) based on battery modules.

	FPGA-based Hardware-in-the-Loop Simulation of a Rectifier with Power Factor Correction By Axel KIFFE	[View] [Download]
Abstract: Power electronic devices are growing in importance in automotive applications. Power converters are used in hybrid electric vehicles but also in other vehicle applications like electric steering systems for example. For testing electronic equipment, hardware-in-the-loop simulation is a today's standard method in the automotive industry. Hardware-in-the-loop simulation requires a real-time capable model of the plant but the development of those models of power electronic circuits is still an ambitious task due to the switching of the semiconductors devices. In this contribution, a FPGA-based hardware-in-the-loop simulation of a rectifier with power factor correction will be presented. First a short introduction on modelling methods for real-time simulation of power electronics and the rectifier with power factor correction is given. Furthermore, the modeling of the rectifier and the power factor correction stage and the simulation algorithm are described. Finally, the implementation of the hardware-in-the-loop simulation and measurement results from the real plant are presented and compared to the simulation results.