Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters

Chen, Hua; Kim, Hyeokjin; Erickson, Robert; Maksimovic, Dragan

doi:10.1109/tpel.2016.2533347

Title: Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters

Abstract

In a hybrid or electric vehicle powertrain, a boost dc-dc converter enables reduction of the size of the electric machine and optimization of the battery system. Design of the powertrain boost converter is challenging because the converter must be rated at high peak power, while efficiency at medium-to-light load is critical for the vehicle system performance. By addressing only some of the loss mechanisms, previously proposed efficiency improvement approaches offer limited improvements in size, cost, and efficiency tradeoffs. This article shows how all dominant loss mechanisms in automotive powertrain applications can be mitigated using a new boost composite converter approach. In the composite dc-dc architecture, the loss mechanisms associated with indirect power conversion are addressed explicitly, resulting in fundamental efficiency improvements over wide ranges of operating conditions. Several composite converter topologies are presented and compared to state-of-the-art boost converter technologies. It is found that the selected boost composite converter results in a decrease in the total loss by a factor of 2-4 for typical drive cycles. Furthermore, the total system capacitor power rating and energy rating are substantially reduced, which implies potentials for significant reductions in system size and cost.

Authors:

Chen, Hua ^[1]; Kim, Hyeokjin ^[1]; Erickson, Robert ^[1]; Maksimovic, Dragan ^[1]

Univ. of Colorado, Boulder, CO (United States). Dept. of of Electrical, Computer and Energy Engineering

Publication Date:: Sun Jan 01 00:00:00 EST 2017

Research Org.:: Univ. of Colorado, Boulder, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1429088

Grant/Contract Number:: EE0006921

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Power Electronics

Additional Journal Information:: Journal Volume: 32; Journal Issue: 1; Journal ID: ISSN 0885-8993

Publisher:: IEEE

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 25 ENERGY STORAGE; 33 ADVANCED PROPULSION SYSTEMS; Power electronics; boost converter; composite converter; dc–dc converter; electric vehicle powertrain; electrified transportation; mechanical power transmission; vehicles; insulated gate bipolar transistors; batteries; power generation; capacitors

Citation Formats


                    Chen, Hua, Kim, Hyeokjin, Erickson, Robert, and Maksimovic, Dragan. Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters.  United States: N. p., 2017. 
Web.  doi:10.1109/tpel.2016.2533347.

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                    Chen, Hua, Kim, Hyeokjin, Erickson, Robert, & Maksimovic, Dragan. Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters.  United States.  https://doi.org/10.1109/tpel.2016.2533347

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                    Chen, Hua, Kim, Hyeokjin, Erickson, Robert, and Maksimovic, Dragan. Sun .  
"Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters".  United States.  https://doi.org/10.1109/tpel.2016.2533347.  https://www.osti.gov/servlets/purl/1429088.

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@article{osti_1429088,

  title        = {Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters},

  author       = {Chen, Hua and Kim, Hyeokjin and Erickson, Robert and Maksimovic, Dragan},

  abstractNote = {In a hybrid or electric vehicle powertrain, a boost dc-dc converter enables reduction of the size of the electric machine and optimization of the battery system. Design of the powertrain boost converter is challenging because the converter must be rated at high peak power, while efficiency at medium-to-light load is critical for the vehicle system performance. By addressing only some of the loss mechanisms, previously proposed efficiency improvement approaches offer limited improvements in size, cost, and efficiency tradeoffs. This article shows how all dominant loss mechanisms in automotive powertrain applications can be mitigated using a new boost composite converter approach. In the composite dc-dc architecture, the loss mechanisms associated with indirect power conversion are addressed explicitly, resulting in fundamental efficiency improvements over wide ranges of operating conditions. Several composite converter topologies are presented and compared to state-of-the-art boost converter technologies. It is found that the selected boost composite converter results in a decrease in the total loss by a factor of 2-4 for typical drive cycles. Furthermore, the total system capacitor power rating and energy rating are substantially reduced, which implies potentials for significant reductions in system size and cost.},

  doi          = {10.1109/tpel.2016.2533347},

  journal      = {IEEE Transactions on Power Electronics},

  number       = 1,

  volume       = 32,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 2017},

  month        = {Sun Jan 01 00:00:00 EST 2017}

}

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Title: Electrified Automotive Powertrain Architecture Using Composite DC–DC Converters

Abstract

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