EPE Association: EPE 2014 - LS1b: Power Converters for Electric Vehicles

EPE 2014 - LS1b: Power Converters for Electric Vehicles
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2014 ECCE Europe - Conference > EPE 2014 - Topic 08: e-Mobility > EPE 2014 - LS1b: Power Converters for Electric Vehicles

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   Analysis and Modeling of a Bidirectional Multiport DC/DC Power Converter for Battery Electric Vehicle Applications
By Omar HEGAZY, Mohamed EL BAGHDADI, Joeri VAN MIERLO, Philippe LATAIRE [View]
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Abstract: Integration of multiple DC sources has received a growing interest to enhance the powertrain performance of the BEVs. To achieve this integration, multiport DC/DC power converters (MPCs) could play a significant role in the future powertrains and sustainable energy systems. This paper proposes a bidirectional multiport DC/DC power converter (BMPC) to integrate multiple-input DC sources (such as High Energy Battery (HEB), Supercapacitor (SC) or High Power Battery (HPB)) to common DC-link in the BEV powertrain. In this article, the proposed BMPC is responsible for the power flow control between the DC sources and DC-link. The proposed converter can provide a compact size, low EMI, centralized control system, high reliability and high efficiency for the BEV drivetrain system compared to other converter topologies. The proposed converter and its control system are investigated and designed by using Matlab/Simulink. Furthermore, the simulation results are provided to verify the dynamic performances of the proposed powertrain in different operating modes. The impact of the proposed topology on the energy consumption and driving range of the vehicle is presented.

   Extended Base Speed Range by Using a Current-Source-Inverter-Fed IPMSM for Automotive Application
By Sicong VONMALOTTKI, Kay HAMEYER [View]
[Download]

Abstract: This paper deals with a system consideration of using a CSI-fed IPMSM for automotive application. The proposed converter structure includes a CSI with an integrated buck-converter. Advantages of using the proposed converter topology in comparison to the state of technology of using a VSI are explained. An optimized operation strategy to 1) extend the base speed range and 2) maximize the system efficiency is developed and introduced in this paper.

   Requirements of hybrid and electric buses a huge challenge for power electronics
By Martin HELSPER, Niklas RÜGER [View]
[Download]

Abstract: The ongoing development of drives for city buses is marked by an increasing hybridization and electrification. A high operation time and the utilization of new drive concepts using permanent-magnet synchronous machines (PMSM) require very durable power electronic and hence power semiconductor technology. First of all the article will initially explain current and future city bus drive concepts and then look at the resultant requirements on power electronics. Starting with state-of-the-art drives it will be shown that future drive concepts using PMSM will result in new requirements for power electronics and especially on the load-cycling capability of IGBT. Strategies to fulfill these requirements will be discussed in the second part. The last chapter provides an overview of promising new packaging technologies for power semiconductors. The potential thermal cycling capability of these new technologies will be estimated. Finally the potential of SiC for the lifetime of electric drives will be briefly evaluated.

   Unidirectional fast switching non-isolated 100 kW fuel cell boost converter
By Otto KREUTZER, Bernd ECKARDT, Martin MAERZ [View]
[Download]

Abstract: This paper describes the power electronic part of a non-isolated unidirectional 400V 100kW DCDC-converter for fuel cell vehicles that reaches a switching frequency of 150 kHz with standard industry power modules. The power modules are equipped with custom made DCB-substrates assembled with a combination of fast super-junction Si-Mosfets and SiC-Schottky Diodes. For all other components like drivers, current sensors and the auxiliary supply converter standard products have been used to facilitate an automotive specification, and a cost efficient production. The inductors are custom-made to reduce the choke losses and volume. The converter reaches an efficiency of 98\% at full load (166->400V, 590A lowside current).Furthermore a simple and reliable DC-link discharge unit is described that discharges with constant power and is far smaller and faster than a conventional resistor solution. Based on a constant current discharge device using a Power MOSFET in linear operation, it is extended with a small analog circuit to a roughly constant power discharge device.

EPE 2014 - LS1b: Power Converters for Electric Vehicles
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2014 ECCE Europe - Conference > EPE 2014 - Topic 08: e-Mobility > EPE 2014 - LS1b: Power Converters for Electric Vehicles
	[return to parent folder]

	Analysis and Modeling of a Bidirectional Multiport DC/DC Power Converter for Battery Electric Vehicle Applications By Omar HEGAZY, Mohamed EL BAGHDADI, Joeri VAN MIERLO, Philippe LATAIRE	[View] [Download]
Abstract: Integration of multiple DC sources has received a growing interest to enhance the powertrain performance of the BEVs. To achieve this integration, multiport DC/DC power converters (MPCs) could play a significant role in the future powertrains and sustainable energy systems. This paper proposes a bidirectional multiport DC/DC power converter (BMPC) to integrate multiple-input DC sources (such as High Energy Battery (HEB), Supercapacitor (SC) or High Power Battery (HPB)) to common DC-link in the BEV powertrain. In this article, the proposed BMPC is responsible for the power flow control between the DC sources and DC-link. The proposed converter can provide a compact size, low EMI, centralized control system, high reliability and high efficiency for the BEV drivetrain system compared to other converter topologies. The proposed converter and its control system are investigated and designed by using Matlab/Simulink. Furthermore, the simulation results are provided to verify the dynamic performances of the proposed powertrain in different operating modes. The impact of the proposed topology on the energy consumption and driving range of the vehicle is presented.

	Extended Base Speed Range by Using a Current-Source-Inverter-Fed IPMSM for Automotive Application By Sicong VONMALOTTKI, Kay HAMEYER	[View] [Download]
Abstract: This paper deals with a system consideration of using a CSI-fed IPMSM for automotive application. The proposed converter structure includes a CSI with an integrated buck-converter. Advantages of using the proposed converter topology in comparison to the state of technology of using a VSI are explained. An optimized operation strategy to 1) extend the base speed range and 2) maximize the system efficiency is developed and introduced in this paper.

	Requirements of hybrid and electric buses a huge challenge for power electronics By Martin HELSPER, Niklas RÜGER	[View] [Download]
Abstract: The ongoing development of drives for city buses is marked by an increasing hybridization and electrification. A high operation time and the utilization of new drive concepts using permanent-magnet synchronous machines (PMSM) require very durable power electronic and hence power semiconductor technology. First of all the article will initially explain current and future city bus drive concepts and then look at the resultant requirements on power electronics. Starting with state-of-the-art drives it will be shown that future drive concepts using PMSM will result in new requirements for power electronics and especially on the load-cycling capability of IGBT. Strategies to fulfill these requirements will be discussed in the second part. The last chapter provides an overview of promising new packaging technologies for power semiconductors. The potential thermal cycling capability of these new technologies will be estimated. Finally the potential of SiC for the lifetime of electric drives will be briefly evaluated.

	Unidirectional fast switching non-isolated 100 kW fuel cell boost converter By Otto KREUTZER, Bernd ECKARDT, Martin MAERZ	[View] [Download]
Abstract: This paper describes the power electronic part of a non-isolated unidirectional 400V 100kW DCDC-converter for fuel cell vehicles that reaches a switching frequency of 150 kHz with standard industry power modules. The power modules are equipped with custom made DCB-substrates assembled with a combination of fast super-junction Si-Mosfets and SiC-Schottky Diodes. For all other components like drivers, current sensors and the auxiliary supply converter standard products have been used to facilitate an automotive specification, and a cost efficient production. The inductors are custom-made to reduce the choke losses and volume. The converter reaches an efficiency of 98\% at full load (166->400V, 590A lowside current).Furthermore a simple and reliable DC-link discharge unit is described that discharges with constant power and is far smaller and faster than a conventional resistor solution. Based on a constant current discharge device using a Power MOSFET in linear operation, it is extended with a small analog circuit to a roughly constant power discharge device.