High frequency DC-DC converters for hybrid electric, electric and fuel cell vehicles

适用于混合动力汽车、电动汽车和燃料电池汽车的高频 DC-DC 转换器

• 批准号: 372066-2009
• 负责人: Eberle, Wilson
• 金额: $ 2.4万
• 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: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=550158
• 关键词: frequency; DC; converters; hybrid; electric

Hybrid electric, electric and fuel cell vehicles make extensive use of electrical energy and electric motors and generators. The electrical energy must be converted between various battery voltages (e.g. 300V, 42V and 12V) to power vehicle electrical loads and the motors/generators. High switching frequency (e.g. 10kHz-1MHz) DC-DC converters 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 switching loss increases proportionally to switching frequency, making DC-DC converters and therefore the vehicles themselves, inherently less efficient.

混合动力、电动和燃料电池汽车广泛利用电能以及电动马达和发电机。电能必须在不同的电池电压(如300V、42V和12V)之间转换，为车辆电气负载和电机/发电机提供动力。这种电压转换使用高开关频率(例如10 kHz-1 MHz)DC-DC转换器。许多转换器组件的尺寸与开关频率成比例减小，因此需要提高开关频率。问题是，开关损耗与开关频率成比例增加，这使得DC-DC转换器本身以及车辆本身的效率固有地较低。