说明：  用于可再生能源的并网变换技术在电力电子技术领域形成研究热点。并网变换器在太阳能光伏、风力发电等可再生能源分布式能源系统中具有广阔发展前景。太阳能、风能发电的重要应用模式是并网发电，并网逆变技术是太阳能光伏并网发电的关键技术
(The grid-connected conversion technology for renewable energy has become a research hotspot in the field of power electronics technology. Grid-connected converters have broad prospects for the development of renewable energy distributed energy systems such as solar photovoltaic, wind power generation and so on. The important application mode of solar and wind power generation is grid-connected generation, and grid-connected inverter technology is the key technology of grid-connected solar photovoltaic power generation.)