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Virtual-Impedance-Based Control for Voltage-Source and Current-Source Converters
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DOI：10.1109/TPEL.2014.2382565.png)
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摘要
En 中文
The virtual impedance concept is increasingly used for the control of power electronic systems. Generally, the virtual impedance loop can either be embedded as an additional degree of freedom for active stabilization and disturbance rejection, or be employed as a command reference generator for the converters to provide ancillary services. This paper presents an overview of the virtual-impedance-based control strategies for voltage-source and current-source converters. The control output impedance shaping attained by the virtual impedances is generalized first using the impedance-based models. Different virtual impedances and their implementation issues are then discussed. A number of practical examples are demonstrated to illustrate the feasibility of virtual impedances. Emerging applications and future trends of virtual impedances in power electronic systems conclude this paper.
Keyword:
Active stabilization
current-source converter (CSC)
fault ride-through
harmonic/unbalance compensation
power flow control
virtual impedance
voltage-source converter (VSC)
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期刊
IF:
6.5
论文数:
1.7W
被引数:
8.3W
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