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Title: An Interleaved, Component-Count-Reduced Multi-Voltage Bus DC/DC Converter for Fuel-Cell-Powered Electric Vehicle Applications

Abstract

No abstract prepared.

Authors:
 [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Power Electronics and Electric Machinery Research Facility
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
931991
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 42nd Annual Meeting of the IEEE Industry Applications Society (IAS 2007), New Orleans, LA, USA, 20070923, 20070927
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 33 ADVANCED PROPULSION SYSTEMS; ELECTRIC-POWERED VEHICLES; FUEL CELLS; DC TO DC CONVERTERS

Citation Formats

Tang, Lixin, and Su, Gui-Jia. An Interleaved, Component-Count-Reduced Multi-Voltage Bus DC/DC Converter for Fuel-Cell-Powered Electric Vehicle Applications. United States: N. p., 2007. Web.
Tang, Lixin, & Su, Gui-Jia. An Interleaved, Component-Count-Reduced Multi-Voltage Bus DC/DC Converter for Fuel-Cell-Powered Electric Vehicle Applications. United States.
Tang, Lixin, and Su, Gui-Jia. Mon . "An Interleaved, Component-Count-Reduced Multi-Voltage Bus DC/DC Converter for Fuel-Cell-Powered Electric Vehicle Applications". United States. doi:.
@article{osti_931991,
title = {An Interleaved, Component-Count-Reduced Multi-Voltage Bus DC/DC Converter for Fuel-Cell-Powered Electric Vehicle Applications},
author = {Tang, Lixin and Su, Gui-Jia},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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  • An interleaved reduced-component-count dc/dc converter is proposed for power management in fuel cell powered vehicles with a multivoltage electric net. The converter is based on a simplified topology and can handle more power with less ripple current, therefore reducing the capacitor requirements, making it more suited for fuel cell powered vehicles in the near future. A prototype rated at 4.3 kW was built and tested to verify the proposed topology.
  • Electrical power systems in future hybrid and fuel cell vehicles may consist of three voltage nets; 14 V, 42 V and high voltage (>200 V) buses. A soft-switched, bi-directional dc-dc converter using only four switches was proposed for interconnecting the three nets. This paper presents a reduced- part dc-dc converter, which decreases the converter cost while retaining all the favorable features of the original topology. Simulation and experimental data are included to verify a simple power flow control scheme.
  • Electrical power systems in future hybrid and fuel cell vehicles may employ three voltage (14V, 42V and high voltage (HV)) nets. These will be necessary to accommodate existing 14V loads as well as efficiently handle new heavy loads at the 42V net and an electrical traction drive on the HV bus. A low-cost bi-directional dc-dc converter was proposed in (10) for connecting the three voltage nets. The converter consists of two half-bridges and a high-frequency transformer; thus minimizing the number of switching devices and their associated gate driver components. One salient feature is that the half-bridge on the 42V busmore » is also utilized to provide the 14V bus by operating its duty ratio around an atypical value of 1/3. This eliminates the need for an additional 14V/42V converter. Moreover, it makes use of the parasitic capacitance of the switches and the transformer leakage inductance for soft-switching; no extra active switches or passive resonant components are required. The use of half-bridges makes the topology suitable for interleaved multi-phase configurations as a means to increase the power level because the capacitor legs can be shared. This paper presents simulation and experimental results on an interleaved two-phase arrangement rated at 4.5 kW. Also discussed are the benefits of operating with the atypical duty ratio on the transformer and a preferred multi-phase configuration to minimize capacitor ripple currents.« less
  • This study presents a bi-directional multi-level power electronic interface for the grid interactions of plug-in hybrid electric vehicles (PHEVs) as well as a novel bi-directional power electronic converter for the combined operation of battery/ultracapacitor hybrid energy storage systems (ESS). The grid interface converter enables beneficial vehicle-to-grid (V2G) interactions in a high power quality and grid friendly manner; i.e, the grid interface converter ensures that all power delivered to/from grid has unity power factor and almost zero current harmonics. The power electronic converter that provides the combined operation of battery/ultra-capacitor system reduces the size and cost of the conventional ESS hybridizationmore » topologies while reducing the stress on the battery, prolonging the battery lifetime, and increasing the overall vehicle performance and efficiency. The combination of hybrid ESS is provided through an integrated magnetic structure that reduces the size and cost of the inductors of the ESS converters. Simulation and experimental results are included as prove of the concept presenting the different operation modes of the proposed converters.« less