Technology Development for High Efficiency High Power Density EV DC - DC Converter

温室气体（GHG）捕获地球的热量，导致全球变暖。电动汽车在支持《巴黎协定》规定的加拿大温室气体减排目标方面可以发挥非常重要的作用。加拿大已经制定了雄心勃勃的目标，到2040年，在加拿大销售的新车100%是电动汽车。为了实现这一目标，需要更小、更高效的电动汽车DC - DC转换器来帮助电动汽车实现更轻的重量和更高的能源效率。阻碍电动汽车普及的主要因素之一是行驶里程有限。这个研究项目的重点是通过减轻电动汽车的重量（减少电源转换器的重量/尺寸）和提高效率来减少驾驶所需的能量。本项目将通过设计高功率（3,800W）、高效率、高功率密度的DC - DC变换器，将来自高功率电池的高压（~330V）转换为低电压（~14V），用于电动汽车的信息处理和辅助电源，开发同时实现这两个目标的技术。将开关控制电容器（SCC）技术应用于有限责任公司谐振变换器中，以实现谐振变换器的电流共享和交错工作。当SCC - LLC技术与下一代GaN（氮化镓）开关相结合时，所提出的EV DC - DC转换器将比现有产品提高一倍以上的功率密度，并将功率损耗降低50%。该项目完成后，加拿大公司将能够生产出体积最小、效率最高的EV DC - DC变换器。这将使加拿大公司在蓬勃发展的电动汽车市场上成为领先的供应商。这也将加快电动汽车的采用率。

Greenhouse gas (GHG) traps the earth's heat and contributes to global warming. Electric Vehicles (EVs) can play a very important role in supporting Canada's GHG reduction goals under the Paris Agreement. Canada has set the ambitious goal of 100% new vehicles sold in Canada to be EVs by 2040. To meet this goal, smaller and highly efficient EV DC - DC converters are needed to help EVs achieve lighter weight and higher energy efficiency. One of the major factors to slow EV's adoption rate is the limited driving range. This research project focuses on reducing the energy needed for driving by lightening the weight carried by the EV (reducing the weight / size of the power converters) and increasing efficiency. This project will develop the technologies to simultaneously achieve both goals by designing a high power (3,800W), high efficiency, and high power density DC - DC converter, which will convert the high voltage (~330V) from the high power battery to low voltage (~14V) for information processing and auxiliary power in the EV. Switch-Controlled-Capacitor (SCC) technology will be applied to LLC resonant converters to achieve current sharing and interleaving operation of the resonant converters. When SCC - LLC technology is combined with the next generation GaN (Gallium Nitride) switches, the proposed EV DC - DC converter will more than double the power density and reduce the power loss by 50% as compared with existing products.Upon the completion of this project, the Canadian companies will be able to produce the smallest EV DC - DC converter with the highest efficiency. It will establish the Canadian companies in a leading position as suppliers in the booming EV market. It will also expedite the adoption rate of EVs.