Combined storage system for energy saving

This paper deals with a batteries/ultracapacitors electric energy storage system. Even if till now the main case studies in energy saving and management have been spent in heavy automotive applications (electric vehicle EV and hybrid electric vehicles HEV), it will be proposed and discussed how such a solution could be suitable for a small and light vehicle as a wheelchair. In order to go deeper in the analysis, it has been introduced an inductor, inserted between the battery and ultracapacitors to introduce more delay in the BU operation in order to further reduce the battery current root mean square. In the work have been shown some experimental tests to make comparisons between the achievable configurations (only batteries, batteries/ultracapacitors and finally inserting and inductor among them), pointing out the advantages and disadvantages of each architecture. Some remarks, related to energy saving, have been added.