Efficient Gallium Nitride-Based AC-DC Power Conversion Circuits for Information Technology, Electric Transportation and Industrial Applications

适用于信息技术、电力运输和工业应用的高效氮化镓基 AC-DC 电源转换电路

• 批准号: RGPIN-2015-06305
• 负责人: Eberle, Wilson
• 金额: $ 1.82万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680617
• 关键词: Efficient; Gallium; Nitride; Based; AC

Consumer and industrial applications, including computers, electric vehicles, information technology servers and industrial battery powered devices make extensive use of electrical energy. The electrical energy must be converted from the alternating current (AC) utility voltage (e.g. 120 V) to a direct current (DC) voltage (e.g. 48 V and 400 V) to power these applications. High switching frequency (e.g. tens to hundreds of kilohertz) AC-DC rectifier circuits are used for this voltage conversion. The size of many of the converter components reduces proportionately to the switching frequency, so increased switching frequencies are desired. The problem is that losses in the circuits tend to increases proportionally to switching frequency, making the AC-DC power conversion circuits, inherently less efficient at higher switching frequencies. Therefore, new technologies are required to enable higher switching frequencies while reducing losses.******The objectives of the proposed research program include invention, analysis and experimental evaluation of novel technologies for consumer and industrial kilowatt power AC-to-DC rectifiers using gallium nitride switches at megahertz switching frequencies in the following areas:***i) Non-isolated bridgeless power factor correction circuits to reduce switching and conduction losses.***ii) Isolated DC-DC power converter circuits to improve the efficiency of second-stage isolated DC-DC converters.***iii) Isolated single-stage power factor correction circuits to reduce switching and conduction losses.******The long-term objective of this research program is to develop novel technologies to increase the power conversion efficiency for kilowatt power level AC-DC rectifiers. The technologies developed in the proposed program will be used in a wide range of future generation consumer and industrial products, ranging from information technology server power supplies to industrial and electric vehicle battery chargers. It is expected that the technologies to be proposed in this research program will enable power conversion efficiency improvements of at least three percentage points, resulting in a reduction in the energy generation required to provide power to these products and a corresponding reduction in greenhouse gas emissions.

消费和工业应用，包括计算机、电动汽车、信息技术服务器和工业电池供电设备，大量使用电能。电能必须从交流 (AC) 市电电压（例如 120 V）转换为直流 (DC) 电压（例如 48 V 和 400 V）才能为这些应用供电。高开关频率（例如几十到几百千赫兹）AC-DC整流电路用于这种电压转换。许多转换器组件的尺寸与开关频率成比例地减小，因此需要增加开关频率。问题在于，电路中的损耗往往会与开关频率成比例地增加，从而使得 AC-DC 电源转换电路在较高开关频率下本质上效率较低。因此，需要新技术来实现更高的开关频率，同时降低损耗。******拟议研究计划的目标包括消费和工业千瓦功率交流到直流整流器新技术的发明、分析和实验评估在以下领域使用兆赫开关频率的氮化镓开关：***i) 非隔离式无桥功率因数校正电路，以减少开关和传导损耗。***ii) 隔离式 DC-DC 电源转换器电路，以提高效率第二级隔离式 DC-DC 转换器。***iii)隔离式单级功率因数校正电路，以减少开关和传导损耗。******该研究计划的长期目标是开发新技术，以提高千瓦功率级交直流整流器的功率转换效率。拟议计划中开发的技术将广泛用于下一代消费和工业产品，从信息技术服务器电源到工业和电动汽车电池充电器。预计该研究计划中提出的技术将使电力转换效率提高至少三个百分点，从而减少为这些产品提供电力所需的发电量，并相应减少温室气体排放。