A New Battery/UltraCapacitor Hybrid Energy Storage System for Electric, Hybrid, and Plug-In Hybrid Electric Vehicles

作者：Cao, Jian^*; Emadi, Ali

来源：IEEE Transactions on Power Electronics, 2012, 27(1): 122-132.

DOI：10.1109/TPEL.2011.2151206

• Battery
• control
• dc/dc converters
• electric vehicles
• energy storage
• hybrid electric vehicles (HEVs)
• plug-in vehicles
• power electronics
• propulsion systems
• ultracapacitor (UC)

In this paper, a new battery/ultracapacitor hybrid energy storage system (HESS) is proposed for electric drive vehicles including electric, hybrid electric, and plug-in hybrid electric vehicles. Compared to the conventional HESS design, which uses a larger dc/dc converter to interface between the ultracapacitor and the battery/dc link to satisfy the real-time peak power demands, the proposed design uses a much smaller dc/dc converter working as a controlled energy pump to maintain the voltage of the ultracapacitor at a value higher than the battery voltage for the most city driving conditions. The battery will only provide power directly when the ultracapacitor voltage drops below the battery voltage. Therefore, a relatively constant load profile is created for the battery. In addition, the battery is not used to directly harvest energy from the regenerative braking; thus, the battery is isolated from frequent charges, which will increase the life of the battery. Simulation and experimental results are presented to verify the proposed system.

• 出版日期2012-1