A High Control Bandwidth Design Method for Aalborg Inverter under Weak Grid Condition

被引：0

作者：

Wu, Weimin ^{[1
]}

Zhou, Cong ^{[1
]}

Wang, Houqin ^{[1
]}

Huang, Min ^{[1
]}

Blaabjerg, Frede ^{[2
]}

Chung, Henry Shu-Hung ^{[3
]}

机构：

[1] Shanghai Maritime Univ, Dept Elect Engn, Shanghai, Peoples R China

[2] Aalborg Univ, Dept Energy Technol, Aalborg, Denmark

[3] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

来源：

2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2017年

关键词：

Buck-Boost; crossover frequency; characteristic frequency; bandwidth; LCL;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Aalborg Inverter is a kind of high efficient Buck-Boost inverter. Since it may work in "Buck-Boost" mode, the control bandwidth should be high enough to ensure a good performance under any grid condition. However, during the "Boost" operation, the control bandwidth depends much on the grid impedance if the crossover frequency is traditionally chosen lower than the characteristic frequency of system. Thus, the bandwidth cannot satisfy the high bandwidth requirement in the weak grid state. In this paper, a new high control bandwidth design method for Aalborg Inverter is proposed. With the proposed method, the bandwidth and the phase margin of the system can reach to 7 kHz and 36 degree respectively, when the grid impedance changes from 0 to 4.8 mH. Meanwhile, no extra damping measure needs to stabilize the system. Simulation and experimental results on an 110 V/ 1 kW prototype verify the proposed design well.

引用

页码：645 / 651

页数：7

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