Buck/Boost Bidirectional Converter TCM Control Without Zero-crossing Detection

被引：0
|
作者：
Wang, Baocheng [1 ]
Yuan, Ye [1 ]
Zhou, Yang [1 ]
Sun, Xiaofeng [1 ]
机构：
[1] Yanshan Univ YSU, Key Lab Power Elect Energy Conservat & Motor Dr H, Qinhuangdao 066004, Peoples R China
来源：
2016 IEEE 8TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (IPEMC-ECCE ASIA) | 2016年
关键词：
buck-boost bidirectional convertor; the triangular current mode; variable frequency; master-modules;
D O I：
暂无
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：
Bidirectional buck/boost converter is widely used in new energy storage systems. By utilizing the traditional triangular current mode (TCM) control strategy, soft-switching can be achieved for all switches. However, traditional TCM scheme needs current zero-crossing detection to regulate conduction interval and a feed-forward regulator is needed due to detection delay, which make the control more complicated and the multi-modules interleaving more difficult. To solve these problems, a new method based on variable frequency to achieve TCM scheme is proposed in this paper. Firstly, variable frequency scheme is based on soft-switching condition and analysis of frequency characteristics, achieving soft-switching by building regulators of frequency and duty cycle to control inductor current. The scheme not only simplify the control scheme, but also achieve cost reduction. Secondly, a master-slave control method with same frequency is proposed to makes multi-modules easier without phase shift regulator. Finally, the correctness of the new program has been verified by experiment.
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页数：6
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