Ripple-Port Module-Integrated Inverter for Grid-Connected PV Applications

被引：73
作者：
Harb, Souhib [1 ]
Mirjafari, Mehran [1 ]
Balog, Robert S. [1 ]
机构：
[1] Texas A&M Univ, Dept Elect & Comp Engn, Renewable Energy & Adv Power Elect Res Lab, College Stn, TX 77843 USA
来源：
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2013年 / 49卷 / 06期
关键词：
Double-frequency ripple; grid-connected inverter; microinverter; MIL-HDBK-217; photovoltaic; power decoupling; reliability; single-phase inverter; DESIGN;
D O I：
10.1109/TIA.2013.2263783
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The single-phase inverter has inherent double-frequency power ripple, which if not internally mitigated, appears at the input port and deteriorates the maximum power point tracker performance. Conventional dc link inverter topologies filter this significant double-frequency ripple by means of the bus capacitance, usually in the form of electrolytic capacitors, which have well known lifetime challenges. This paper presents a double-frequency ripple cancellation concept and experimental proof of concept. The proposed module-integrated inverter is based on the commonly used two-stage inverter. However, a third port is added for ripple cancellation purposes. Hence, a very small capacitance is needed, and, as a result, a high-reliability film capacitor can be used instead of the bulky low-reliability electrolytic ones.
引用
收藏
页码：2692 / 2698
页数：7
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