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%

世界不断增长的电力需求必然需要将更多的可再生能源（光伏和风能）资源收集到现有电网中。每个光伏发电场或风电场都必须利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。全桥两电平转换器等标准技术是其中的主要参与者。我们不断对市场进行分析和调查，以寻求在转换效率、功率损耗、电能质量和制造成本等各个方面可能的改进。输出电压的高谐波含量以及庞大的滤波器仍然是一个限制问题。如今，在称为“多电平转换器”的电力电子转换器中使用更多功率开关是一项有竞争力的技术，它可以在输出端产生更多电压电平，从而降低谐波，输出滤波器的尺寸更小，封装尺寸更紧凑，制造成本更低。这种多级拓扑产生低谐波波形；因此，它们最适合能量转换，从光伏系统等可再生能源向负载提供高效电力。 Al-Haddad 于 2011 年发明了一种克服上述问题的新技术，即 Packed U-Cell (PUC) 转换器结构。这种新的多电平转换器拓扑具有高功率密度能力、轻量化以及具有自平衡特性的产品将被开发和测试，用于太阳能转换应用和连接多个直流电源，以将盒内的智能电源转换器与连接的交流电源连接起来，或在达到高功率密度下独立运行。该项目的目标是开发具有智能即插即用并行能力的 3 kW 板，并使用工作频率为 200 kHz 的 GaN 功率器件新技术集成到每立方英寸 250 瓦的高功率密度中。该板将以 96% 的效率收集太阳能