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: 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=637572
• 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.

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。