55-kW Variable 3X DC-DC Converter for Plug-in Hybrid Electric Vehicles

被引：147

作者：

Qian, Wei ^{[1
]}

Cha, Honnyong ^{[1
]}

Peng, Fang Zheng ^{[1
]}

Tolbert, Leon M. ^{[2
]}

机构：

[1] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA

[2] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2012年 / 27卷 / 04期

关键词：

DC-DC power conversion; multilevel converter; pulse width modulation; voltage dividers; voltage multipliers; BUCK CONVERTER; CAPACITOR; CONVERSION; DESIGN;

D O I：

10.1109/TPEL.2011.2165559

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents an alternative to the traditional dc-dc converter interfacing the battery with the inverter dc bus in plug-in hybrid electric vehicle (HEV) traction drives. The boost converter used in commercial HEVs meets with obstacles when it comes to upgrading the power rating and achieving high efficiency while downsizing the converter. A four-level flying-capacitor dc-dc converter is explored that can overcome these drawbacks by dramatically reducing the inductance requirement. A special case of the four-level converter, the 3X dc-dc converter, operates at three discrete output/input voltage ratios, thus further reducing the inductance requirement to a minimal value (almost zero). When further compared to its switched-capacitor dc-dc converter counterparts, the 3X dc-dc converter can be operated at variable output/input voltage ratios without sacrificing efficiency, and it lowers the capacitance requirement by utilizing the parasitic inductance. The operating principle, current ripple analysis, the transient control to limit the inrush current, and power loss analysis are introduced. Experimental results of a 55-kW prototype are provided to demonstrate the principle and analysis of this topology.

引用

页码：1668 / 1678

页数：11

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