DC Ripple Voltage Suppression Strategy for Cascaded Power Electronic Transformer

被引：0
|
作者：
Tu C. [1 ]
Xiao F. [1 ]
Yuan J. [1 ]
Zhou D. [2 ]
机构：
[1] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha
[2] State Grid Yangzhou Power Supply Company, Yangzhou
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 14期
关键词：
Linear fitting; Power electronic transformer; Power transmission; Ripple voltage;
D O I：
10.19595/j.cnki.1000-6753.tces.180612
中图分类号：
学科分类号：
摘要：
For cascaded power electronic transformer, ripple voltage in the dc side will affect the reliability and restrict the optimization of volume and energy density. To suppress and control the ripple voltage, a novel control strategy is proposed in this paper. Firstly, the topology and control strategy of cascaded PET are described briefly. From the perspective of the dc ripple voltage generating mechanism, the ripple voltage suppression strategy with a ripple power transmission channel is proposed for PET. Then, the model of the proposed control strategy is built. The nonlinear link of the model is decoupled by a linear fitting method to analyze the control performance of the DC loop and AC loop. Simulation and experiment results have verified the proposed control strategy. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：2990 / 3003
页数：13
相关论文
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