Design and Development of Highly Efficient High DC Voltage Inverters for Medium- to High-Power Distributed Energy Source

中高功率分布式能源高效高直流电压逆变器的设计与开发

• 批准号: RGPIN-2022-05382
• 负责人: Bakhshai, Alireza
• 金额: $ 2.84万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752029
• 关键词: Design; Development; Highly; Efficient; DC

Renewables are rapidly replacing the fossil-fuel energies due to growing concerns about security, operation costs, sustainability, and environmental issues of power supplies. Canada is a world leader in the production and use of energy from renewable resources. Renewable Energy Sources (RESs) are currently supplying about 19% of Canada's total primary energy. The federal government has committed to the realizing net-zero Greenhouse Gas (GHG) emission power sources by 2050. In the ever-evolving RES industry, trends for hardware developers have been in one direction: More power at lower cost. A great number of very large multi-national solar competitors attempt to eke out gains in efficiency, power, and reduced costs - each of which is directly associated with the desired end result of higher returns for system owners. The most impactful of these three happens to be an increase in power, since the industry relies primarily on measures of "Cost per Watt", along with less direct measures of bankability, reliability, and service. Marginal gains on this front are directly related to the conversion topology, limits of semiconductors, and cooling capabilities and ancillary systems. One approach enabling the efficient connection of greater Photovoltaic (PV) arrays to one inverter is to increase the inverter's Direct Current (DC) link bus voltage. However, achieving this concept evolution requires the development of newer and innovative circuit topologies and switching schemes that can allow the use of new semiconductor switching devices at a higher DC bus voltage. Today, Medium-Voltage (MV) high-power DC/AC grid-tie inverters are the trend for high power RES systems. Such grid-tie inverters must be capable of handling bi-directional current flow to enable the charging of energy storage devices, a feature quickly becoming more relevant as grid operators look for solutions to keep centralized power generators dynamically connected. The proposed program focuses on how to achieve these higher levels of power capacity, while also addressing some of the more tangential issues along the way. The selected technology will take into consideration the capability and cost of next generation semiconductors such as Silicon Carbide (SiC) and Gallium Nitride (GaN), the most optimal bridge design, and its ability to provide advanced grid integration functions. The developed technologies are expected to be utilized by the industry to enhance the performance of their products, reduce the manufacturing cost, and increase the productivity, making contributions to the Canada's economic growth. The proposed program involves 5 doctoral and 3 master's students over five years. The participating students will acquire broader industry-relevant and industry-based skills in advanced computer aided design of power electronics circuits, power electronics simulation tools, PCB design, FPGA based digital control techniques, experimentation, and proof-of-concept prototype building.

由于对电力供应的安全性、运营成本、可持续性和环境问题的日益关注，可再生能源正在迅速取代化石燃料能源。加拿大在生产和使用可再生能源方面处于世界领先地位。可再生能源（RESs）目前约占加拿大一次能源总量的19%。联邦政府已承诺到2050年实现温室气体（GHG）净零排放电源。在不断发展的RES行业中，硬件开发人员的趋势一直朝着一个方向发展：以更低的成本获得更多的功率。许多非常大的跨国太阳能竞争对手试图在效率，功率和降低成本方面取得进展-其中每一个都与系统所有者获得更高回报的预期最终结果直接相关。这三者中最具影响力的恰好是功率的增加，因为该行业主要依赖于“每瓦成本”的衡量标准，沿着的是可融资性、可靠性和服务等不太直接的衡量标准。这方面的边际收益与转换拓扑结构、半导体限制以及冷却能力和辅助系统直接相关。一种能够将更大的光伏（PV）阵列有效连接到一个逆变器的方法是增加逆变器的直流（DC）链路总线电压。然而，实现这一概念演变需要开发更新和创新的电路拓扑和开关方案，其可以允许在更高的DC总线电压下使用新的半导体开关器件。当今，中压（MV）大功率DC/AC并网逆变器是大功率RES系统的趋势。这种并网逆变器必须能够处理双向电流，以实现储能设备的充电，随着电网运营商寻找保持集中式发电机动态连接的解决方案，这一功能迅速变得更加相关。拟议的计划侧重于如何实现这些更高水平的电力容量，同时也解决了一些更切题的问题沿着。选定的技术将考虑下一代半导体的能力和成本，如碳化硅（SiC）和氮化镓（GaN），最优化的电桥设计，以及提供先进电网集成功能的能力。这些技术有望被业界用来提高产品性能，降低制造成本，提高生产率，为加拿大的经济增长做出贡献。该计划涉及5名博士生和3名硕士生，为期五年。参与的学生将获得更广泛的行业相关和基于行业的技能，包括电力电子电路的先进计算机辅助设计，电力电子仿真工具，PCB设计，基于FPGA的数字控制技术，实验和概念验证原型构建。