CAREER: Power Electronics and High Voltage Intensive Solutions for Very Large Scale Megawatt Photovoltaic Systems

职业：超大规模兆瓦光伏系统的电力电子和高压密集型解决方案

• 批准号: 1054479
• 负责人: Jin Wang
• 金额: $ 40万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-03-15 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1054479&HistoricalAwards=false
• 关键词: CAREER; Power; Electronics; Voltage; Intensive

CAREER: Power Electronics and High Voltage Intensive Solutions for Very Large Scale Megawatt Photovoltaic Systems(Abstract)Research Objectives and Approaches The objective of this research is to significantly enhance the efficiency and lower the cost of very large scale (VLS) megawatt photovoltaic (PV) power plants. The approach is to derive and realize a new generation of power electronics circuits and associated control strategies for a hybrid PV-battery system.Intellectual Merit First, a circuit analysis framework for multiple-input converters will be derived. Based on this framework, the best circuit for battery integration at the PV module level in VLS systems will be identified. Then, a new breed of SiC-based switched capacitor converter/inverters will be derived. In particular, a switched capacitor inverter will be studied. The inverter will have boost function, multiple voltage levels, redundant switching statues, and low voltage stresses on switches and capacitors. All these new circuits will be implemented in a hybrid PV-battery system to 1) maximize the total power output of all the PV cells, 2) reduce the cost of battery monitoring and balancing circuits, and 3) eliminate line transformers, filters, and centralized inverters for battery packs.Broader ImpactCalculated from published numbers, the proposed research will create at least $3.4 billion in cost savings per year. The project will also include a comprehensive education plan: at the K-12 level, a collaborative one-day Solar Energy/Smart grid workshop will be established to reach 2000+ Ohio teachers; a hardware-in-the-loop simulation platform will be utilized for teaching activities at both the undergraduate and graduate levels; and a long-term internship program with the University of Puerto Rico at Mayagüez will be developed.

职业生涯：超大规模兆瓦光伏系统的电力电子和高压密集型解决方案(摘要)研究目标和方法本研究的目的是显著提高超大规模(VLS)兆瓦光伏(PV)发电厂的效率和降低成本。该方法是为了推导和实现用于混合光伏电池系统的新一代电力电子电路和相关的控制策略。基于此框架，将确定用于VLS系统中光伏组件级别的电池集成的最佳电路。然后，将衍生出一种新型的基于碳化硅的开关电容转换器/逆变器。特别是对开关电容逆变器进行了研究。逆变器将具有升压功能、多个电压电平、冗余开关状态以及开关和电容器上的低电压应力。所有这些新电路都将在混合光伏电池系统中实施，以1)最大限度地提高所有光伏电池的总功率输出，2)降低电池监控和平衡电路的成本，3)消除电池组的线路变压器、过滤器和中央逆变器。布罗德影响根据公布的数字计算，拟议的研究每年将至少节省34亿美元的成本。该项目还将包括一个全面的教育计划：在K-12阶段，将建立一个为期一天的合作太阳能/智能电网研讨会，为2000多名俄亥俄州教师提供培训；一个硬件在环仿真平台将用于本科生和研究生的教学活动；将与波多黎各大学马亚格斯分校制定长期实习计划。