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引用次数: 0
摘要
本文提出了一种在两级单相逆变器系统中有效抑制采用三相移相（TPS）调制策略的双有源桥（DAB）变流器二次谐波电流（SHC）的方法。为确保动态响应性能，引入了插入两倍输出电压频率陷波滤波器的负载电流前馈控制。建立了系统的平均模型，从阻抗的角度分析了前端 DAB 转换器的输出阻抗对 SHC 的影响。所提出的方法无需考虑中间总线电容的精度。最后，建立了一个实验原型来验证所提出的 SHC 降低方法的正确性和有效性。
Second-harmonic current reduction of dual active bridge with triple-phase shift in two-stage single-phase inverter system
This article proposes a method to effectively suppress second-harmonic current (SHC) of dual active bridge (DAB) converter, which adopts the triple-phase shift (TPS) modulation strategy, in two-stage single-phase inverter system. Load current feedforward control with twice the output voltage frequency notch filter inserted is introduced to ensure the dynamic response performance. The averaged model of the system is established to analyse the influence of output impedance of front-end DAB converter on SHC from the perspective of impedance. The proposed method does not need to consider the accuracy of the intermediate bus capacitance. Finally, an experimental prototype was established to verify the correctness and effectiveness of the proposed SHC reduction method.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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