Analysis of a Flexible Single-Phase Multilevel Inverter Topology for Photovoltaic Applications

被引：0
|
作者：
Hammami, M. [1 ]
Vujacic, M. [1 ]
Viatkin, A. [1 ]
Grandi, G. [1 ]
机构：
[1] Univ Bologna, Dept Elect Elect & Informat Engn, Bologna, Italy
来源：
2018 9TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC) | 2018年
关键词：
DC-link voltage; single-phase multilevel inverter; level doubling network; SYSTEMS;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An original and an effective method for the analysis of the dc-link voltage ripple for single-phase multilevel inverters based on H-bridge and level doubling network (LDN) is given in this paper. The LDN is basically a half-bridge fed by a floating capacitor, without the need of an additional dc supply and with voltage self-balancing capability, able to increase (double) the number of output voltage levels. This configuration is particularly suitable for single-phase single-stage grid-connected photovoltaic (PV) systems, and the LDN cell can be seen also as a retrofit for existing H-bridge configurations. In order to address the design of the conversion system, with particular reference to the dc-link capacitor, PV current and voltage ripples are analytically determined and verified by experimental tests.
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页数：6
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