Universal modular Vehicle-to-Grid bi-directional on board charger with SiC technologies

纯电动汽车/插电式混合动力汽车具有许多优势，包括卓越的驾驶舒适性和更低的排放。然而，仍有许多技术挑战阻碍了它们的广泛采用，例如电网上的意外和不平衡负载，以及成本和范围焦虑。因此，电力供应商和汽车制造商正致力于V2G技术，以加强电网的可靠性和能力，使最终客户能够通过V2G回报降低纯电动汽车/插电式混合动力汽车的整体成本，并提供更快的双向充电能力，以缓解里程焦虑。在这个项目中，我们将开发一种新型的通用模块化车载充电系统，以合理的成本实现单相和三相双向充电。这项新技术将使BEV/PHEV充电系统能够以更小的体积实现V2G功能，最大限度地提高通用性，同时解决可靠性、故障保护和在恶劣的汽车环境中高效运行的问题。这将为汽车制造商提供安装在车内的V2G车载充电器，从而鼓励电动汽车的普及。由于双向功率因数校正和软开关等方面的新要求，开发高效的双向OBC具有挑战性。该项目将通过实施先进的设备、封装技术和控制方法来开发卓越的OBC，以超越最先进的技术。

BEV/PHEVs provide a number of advantages including superior driver comfort and lower emissions. However, there are a number of technical challenges which still impede their widespread adoption, such as the unexpected and unbalanced load on the grid, and cost and range anxiety. Therefore, power suppliers and automotive manufacturers are working towards V2G technology to reinforce the reliability and capability of the grid, enable end customers to reduce overall BEV/PHEV cost with V2G paybacks, and provide faster bi-directional charging capabilities to alleviate the range anxiety. In this project we will develop a novel universal modular on board charging system implementing the single-phase and three-phase bi-directional charging at a reasonable cost. This new technology will enable the BEV/PHEV charging systems to achieve V2G capability with reduced volume, maximised commonality while addressing concerns of reliability, fault protection and operating in the severe automotive environment with high efficiency. This will provide the vehicle manufacturers with V2G on board charger to install within their vehicle and so encourage the uptake of electric vehicles. Developing high efficient bi-directional OBC is challenging due to the new requirements of bi-directional power factor correction and soft switching, etc.. This project will develop a superior OBC by implementing advanced devices, packaging technology, and control method to push the envelope beyond the state-of-the-art.