Development of high power density three-phase solar string inverter

高功率密度三相太阳能组串逆变器的研制

• 批准号: 531918-2018
• 负责人: Li, Yunwei
• 金额: $ 9.11万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=657539
• 关键词: Development; power; density; three; phase

There is a new market trend in commercial and utility scale solar power plants today to adopt more three-phase string power inverters to convert solar energy into grid power or general-purpose alternating current (AC) electricity. Currently, existing photovoltaic (PV) inverters of such scale are too large and heavy for one man to handle, imposing significant efforts and cost for the installation and maintenance of such a system. In this project, we will develop a high power density PV string inverter based on a patent pending multilevel converter topology which uses a combination of silicon and next generation Gallium Nitride (GaN) devices. The inverter features high reliability, low cost, compact size and low weight. The project is based on the successful testing of a lab scale 50kW size prototype and aims to develop a commercial level prototype which will operate at 100kW.****

如今，在商业和公用事业规模的太阳能发电厂中存在新的市场趋势，即采用更多的三相串式功率逆变器来将太阳能转换成电网功率或通用交流（AC）电。目前，现有的这种规模的光伏（PV）逆变器对于一个人来说太大和太重而无法处理，从而为这种系统的安装和维护带来了巨大的努力和成本。在这个项目中，我们将开发一个高功率密度的光伏串逆变器的基础上，专利申请中的多电平转换器拓扑结构，使用硅和下一代氮化镓（GaN）器件的组合。该逆变器具有可靠性高、成本低、体积小、重量轻等特点。该项目是基于实验室规模的50千瓦大小的原型成功测试，旨在开发一个商业水平的原型，将在100千瓦运行。