Improving the Stability of Cascaded DC/DC Converter Systems via Shaping the Input Impedance of the Load Converter With a Parallel or Series Virtual Impedance
Improving the Stability of Cascaded DC/DC Converter Systems via Shaping the Input Impedance of the Load Converter With a Parallel or Series Virtual Impedance
复制标题
通过使用并联或串联虚拟阻抗调整负载转换器的输入阻抗，提高级联 DC/DC 转换器系统的稳定性
DOI：
10.1109/tie.2015.2459040
复制
发表时间：
2015-07
影响因子：
7.7
通讯作者：
Zhong, Qing-Chang
中科院分区：
文献类型：
--
作者：
Zhang, Xin;Ruan, Xinbo;Zhong, Qing-Chang
级联系统中单独设计的电源子系统之间的相互作用可能导致不稳定。提出了一种在负载变换器的输入阻抗上并联或串联一个虚拟阻抗，从而在较小的频率范围内改变负载变换器输入阻抗的幅值或相位的方法，以解决级联系统的不稳定问题。推导了并联虚拟阻抗（PVI）和串联虚拟阻抗（SVI）的要求，提出了实现PVI和SVI的控制策略。并对PVI和SVI控制策略进行了比较和一般设计过程。最后，考虑到最坏的稳定性问题，经常发生在系统的源变换器是一个LC滤波器，两个级联系统组成的源变换器与LC输入滤波器和负载变换器，这是一个降压转换器或升压转换器，制造和测试，以验证所提出的控制方法的有效性。
Interactions between individually designed power subsystems in a cascaded system may cause instability. This paper proposes an approach, which connects a virtual impedance in parallel or series with the input impedance of the load converter so that the magnitude or phase of the load converter's input impedance is modified in a small range of frequency, to solve the instability problem of a cascaded system. The requirements on the parallel virtual impedance (PVI) and series virtual impedance (SVI) are derived, and the control strategies to implement the PVI and SVI are proposed. The comparison and general design procedure of the PVI and SVI control strategies are also discussed. Finally, considering the worst stability problem that often occurs at the system whose source converter is an LC filter, two cascaded systems consisting of a source converter with an LC input filter and a load converter, which is either a buck converter or a boost converter, are fabricated and tested to validate the effectiveness of the proposed control methods.
登录
查看更多内容
影响因子：
4.4
作者：
F. Blaabjerg;A. Consoli;J. Ferreira;J. V. van Wyk
通讯作者：
F. Blaabjerg;A. Consoli;J. Ferreira;J. V. van Wyk
影响因子：
6.7
作者：
Xiaogang Feng;Jinjun Liu;F. Lee
通讯作者：
Xiaogang Feng;Jinjun Liu;F. Lee
影响因子：
6.7
作者：
Jiabin Wang;D. Howe
通讯作者：
Jiabin Wang;D. Howe
影响因子：
7.7
作者：
P. Shamsi;B. Fahimi
通讯作者：
P. Shamsi;B. Fahimi
DOI：
--
发表时间：
2012-05
期刊：
--
影响因子：
--
作者：
Z. El-Khatib;L. MacEachern;S. Mahmoud
通讯作者：
Z. El-Khatib;L. MacEachern;S. Mahmoud