DC Capacitance Reduction in Three-Phase Photovoltaic Inverters by using Virtual Impedance Emulation

被引：0

作者：

Urtasun, Andoni ^{[1
]}

Sanchis, Pablo ^{[1
]}

Marroyo, Luis ^{[1
]}

机构：

[1] Publ Univ Navarre UPNA, Inst Smart Cities, Dept Elect & Elect Engn, Pamplona, Spain

来源：

2019 21ST EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE '19 ECCE EUROPE) | 2019年

关键词：

Converter control; Frequency-Domain Analysis; Photovoltaic; Renewable energy systems;

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：

DC voltage regulation in grid-connected three-phase PV inverters is a fundamental requirement. In order to reduce the influence of the PV non-linear behavior and ensure stability in the whole operating range, the input capacitance in high-power inverters is currently oversized, thus increasing the converter cost. This paper proposes a control method which emulates a virtual impedance in parallel with the PV generator, making it possible to reduce the capacitance by a factor of 5. Simulation results confirm that the proposed control is stable and fast enough in the whole operating range with such a small capacitor.

引用

页数：9

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