Analysis and Suppression of the Circulating Current Influence in the Input-Series Auxiliary Power Supply for High-Input-Voltage Applications

被引:15
|
作者
Meng, Tao [1 ]
Ben, Hongqi [2 ]
Song, Yilin [1 ]
Li, Chunyan [1 ]
机构
[1] Heilongjiang Univ, Sch Mech & Elect Engn, Harbin 150080, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Heilongjiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Circulating current; input-series; multiple-output auxiliary power supply; transformer integration; two-transistor flyback; DC-DC CONVERTERS; CONTROL STRATEGY; CONNECTED CONVERTER; TRANSFORMER; DESIGN; 2-TRANSISTOR;
D O I
10.1109/TPEL.2018.2876299
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
The input-series converters based on transformer integration have the advantages of active input voltage sharing (IVS) and simplicity of the whole system, which are suitable for the high-input voltage multiple-output applications. However, due to the parameters error in each series module, the circulating current occurs among the series modules during the active IVS process. Aiming at this type input-series two-transistor flyback converter, the mechanism and influence of the circulating current in each series module are analyzed. On this basis, according to the characteristics of the peak current mode control scheme adopted in this converter, a suppression strategy is proposed, by which influence of the circulating current on the operational stability of the converter under the light load conditions can be eliminated. Finally, based on the simulating results, the experimental study has been clone on a 60-W experimental prototype composed of three series modules, and the theoretical analysis and the proposed suppression strategy have been verified by the experimental results.
引用
收藏
页码:6533 / 6543
页数:11
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