High efficient high density multilevel packed u-cell power electronics converter for renewable energy conversion

用于可再生能源转换的高效高密度多层封装 u-cell 电力电子转换器

• 批准号: 516260-2017
• 负责人: AlHaddad, Kamal
• 金额: $ 8.34万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618731
• 关键词: efficient; density; multilevel; packed; cell

Growing electric power demand in the world requires necessarily more harvesting of renewable energy (PV and Wind) resources into the existing grid. Each PV or wind farm should necessarily make use of power electronics inverters to convert the available DC current into a fixed-frequency fixed- AC voltage magnitude usable by the consumers.Standard technology such as full-bridge two-level converters are the main players in the market which have being continuously analyzed and investigated for any possible improvements in various aspects such as conversion efficiency, power losses, power quality and manufacturing costs. High harmonic content of output voltage still a matter of limitation along with bulky filter.Nowadays, using more power switches in power electronic converters called 'multilevel converters' is a competitive technology which leads to produce more voltage levels at the output and consequently lower harmonics, smaller size of the output filters, more compact, package size, and lower manufacturing cost. Such multilevel topologies generate low harmonic waveforms; therefore they are most suitable for energy conversion to deliver efficient power to the loads from renewable energy resources like photovoltaic systems. A new technology, which permit to overcome the above-mentioned issues, named Packed U-Cell (PUC) converter structure has been invented by Al-Haddad in 2011. This new topology of multilevel converter which has high power density capability, light weight along with the self-balancing characteristics will be developed and tested for solar conversion application and for interfacing multiple DC sources to connect smart power converter in the box with interfacing ac sources or in stand alone operation at high power density reaching. The project target 3 kW boards with intelligent plug and play parallelizing capability will be developed, and integrated in high power density 250 Watts per cubic inches using the new technology of GaN power devices operating at 200 kHz. The board will harvest solar power at an efficiency of 96%

世界上不断增长的电力需求必然要求将更多的可再生能源（光伏和风能）资源收集到现有电网中。每个光伏或风力发电场都必须使用电力电子逆变器将可用的直流电流转换为消费者可用的固定频率固定交流电压幅度。标准技术，如全桥两电平转换器是市场上的主要参与者，一直在不断分析和研究转换效率，功率损耗，电力质量和制造成本。输出电压的高谐波含量仍然是一个限制问题，沿着与庞大的滤波器。如今，在电力电子变换器中使用更多的功率开关，称为“多电平变换器”，是一种有竞争力的技术，它导致在输出端产生更多的电压电平，从而降低谐波，输出滤波器的尺寸更小，更紧凑，封装尺寸更小，制造成本更低。这种多电平拓扑产生低谐波波形;因此它们最适合于能量转换，以从可再生能源（如光伏系统）向负载提供高效功率。Al-Haddad在2011年发明了一种新技术，该技术允许克服上述问题，称为封装U单元（PUC）转换器结构。将开发并测试这种具有高功率密度能力、沿着的重量轻以及自平衡特性的新型多电平变换器拓扑结构，以用于太阳能转换应用以及用于连接多个DC源以将盒中的智能功率变换器与连接的AC源连接或在达到高功率密度的独立操作中。该项目的目标是开发具有智能即插即用并行化能力的3 kW电路板，并使用工作在200 kHz的GaN功率器件新技术以每立方英寸250瓦的高功率密度集成。该板将以96%的效率收集太阳能