Minimum Current Stress Control Strategy of Isolated Bidirectional AC/DC Converter Based on Virtual Frequency

被引：0
|
作者：
Guo D. [1 ]
Jia Y. [1 ]
Ren C. [1 ]
Han X. [1 ]
Meng X. [1 ]
Wang Y. [1 ]
机构：
[1] Shanxi Key Laboratory of Power System Operation and Control, Taiyuan University of Technology, Taiyuan
来源：
Gaodianya Jishu/High Voltage Engineering | 2021年 / 47卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Current stress mini-mization; Isolated bidirectional AC/DC converter; Single phase converter; Triple-phase-shift control; Virtual frequency control method;
D O I：
10.13336/j.1003-6520.hve.20210229
中图分类号：
学科分类号：
摘要：
We propose a minimum current stress control strategy based on virtual frequency for isolated bidirectional AC/DC con-verters. First, the switching characteristics of the triple phase shift (TPS) control method are analyzed, and the TPS-based phase-shift full-bridge minimum-current stress control algorithm is designed. Then, according to the non-linear characte-ristics of the output power compared with the shift, a virtual frequency control method is proposed. This algorithm can simplify the nonlinear control to linearization, and can also realize the single-stage conversion of the AC-DC converter, effectively reducing the intermediate bus capacitance and reducing system current stress. Finally, the experimental platform based on TMS320F28335 verifies the proposed control strategy. The experimental results show that the control strategy in this paper can effectively reduce the current stress of the converter when the power is transmitted in both directions. © 2021, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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收藏
页码：2914 / 2922
页数：8
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