期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：267
期号：4
页码：1-9
DOI：10.1088/1755-1315/267/4/042043
出版社：IOP Publishing
摘要：High-efficiency inverter topology design on single-phase photovoltaic grid-connected equipment is the core of bringing considerable benefits to the society and the investors. In order to study the key hardware design of the inverter that meets the leakage current requirement and achieve the maximum efficiency, this paper analyses the H-bridge based topology (H5 and H6) and DPB topology. Firstly, this paper discusses the working principle of these topologies and concludes that the DPB topology involves fewer MOSFETs than the H-bridge based topology. Additional studies of power device analysis and other component losses in these topologies have concluded that DPB topology typically has lower power device losses at different load ratios. For instance, when the load ratio (Po / Pe) is 100, the power device loss of the H5 topology is 77 W, and the loss of the H6 topology is 68.7 W. Under the same conditions, the loss of the power device in the DPB topology is only 53.6 W.
