|
|
Digital-Current-Controlled Bi-Directional DC/DC Converter in the Hybrid Electric Vehicle |
Zhang Xiaofeng, Lü Zhengyu |
Zhejiang University Hangzhou 310027 China |
|
|
Abstract This paper focuses on the most important aspects of the bi-directional DC/DC converter in the hybrid electric vehicle(HEV) for the project applications.The different operating modes of converters are introduced under all HEV's work conditions. Based on summarization, the demerits including low efficiency at light load and the uncontrolled discontinuous current when charging for the battery are derivated. Through theoretical and mathematical analysis, a new algorithm of average current controlling and digital control method in discontinuous synchronous rectifier mode with a single current sensor resistance are proposed to realize the multi-mode bi-directional DC/DC converter. At the same time, the 800W prototype using proposed technology is implemented for 48V HEV application in order to verify the operational principles and advantages that improved synchronous rectifier inverse-boost converter light load efficiency. Effectiveness and feasibility of the new proposed control strategy is verified by experiments.So it can be applied to hybrid electric vehicle drive system.
|
Received: 21 December 2007
Published: 17 February 2014
|
|
|
|
|
[1] Oscar Garcia, Pablo Zumel, Angel de Castro, et al. Automotive DC/DC bidirectional converter made with many interleaved Buck stages[J]. IEEE Trans. on Power Electronics, 2006, 21(5): 578-586. [2] Chong Eun Kim, Sang Kyoo Han, Kang Hyun Yi, et al. A new high efficiency ZVZCS bidirectional DC/DC converter for 42V power system of HEVs[C]. Power Electronics Specialists Conference, 2005, 2: 792-797. [3] Iftikhar A Khan. DC-to-DC converters for electric and hybrid vehicles[J]. Proceeding of Power Electronics in Transportation, 1994, 20-21(10): 113-122. [4] 张晓峰, 吕征宇. 基于级联式拓扑的消除无刷直流电机传导区转矩脉动方法[J]. 电工技术学报, 2007, 22(1): 30-33. [5] 刘树林, 刘健, 寇蕾, 等. Buck DC/DC变换器的输出纹波电压分析及其应用[J]. 电工技术学报, 2007, 22(2): 91-97. [6] 肖华锋, 谢少军. 一端稳压一端稳流型软开关双向DC/DC变换器(Ⅰ)——电路原理和控制策略[J]. 电工技术学报, 2006, 21(10): 31-37. [7] 肖华锋, 谢少军. 一端稳压一端稳流型软开关双向DC/DC变换器(Ⅱ)——设计原则和实验研究[J]. 电工技术学报, 2006, 21(11): 34-39. [8] 马棡, 瞿文龙, 刘圆圆. 一种新型双向软开关DC/DC变换器及其软开关条件[J]. 电工技术学报, 2006, 21(7): 15-19. [9] 张方华, 严仰光. 推挽正激移相式双向DC/DC变换器[J]. 电工技术学报, 2004, 19(12): 59-64. [10] 马皓, 张涛, 韩思亮. 新型逆变器滑模控制方案研究[J]. 电工技术学报, 2005, 20(7): 50-56. [11] 胡庆波, 阳岳丰, 周利强, 等. 全数字双向DC/DC变换器中电流断续控制的研究[J]. 电力电子技术, 2006, 40(2): 54-55. [12] 张方华, 朱成花, 严仰光. 双向DC/DC变换器的控制模型[J]. 中国电机工程学报, 2005, 25(11): 46-49. [13] 夏超英, 刘奎, 郭熠. 电动汽车用全数字双向DC/DC变换器的实现[J]. 电力电子技术, 2006, 40(2): 70-72. [14] 许海平, 温旭辉, 孔力. 全数字化双向DC/DC变换器中的分析和设计[J]. 电力电子技术, 2003, 37(6): 13-16. [15] 欧阳长莲, 严仰光, 章国宝. 同步整流Buck变换器断续工作模式建模分析[J]. 电工技术学报, 2002, 17(6): 53-58. |
|
|
|