Ultracapacitor Based Storage System for Lead-Acid Powered Light Electric Vehicle Retrofit

15th International Scientific Conference "Engineering for Rural Development": Proceedings 2016
Kaspars Kroičs, Viesturs Bražis

The paper presents the concept of a supercapacitor based plug-in retrofit kit that can be easily installed on the electric vehicle powered by lead-acid batteries without the intervention in the control system to store regenerative braking energy, improve battery lifetime and efficiency. The installation of the retrofit can be done in a simple manner by connecting of only two wires to the DC bus and by installing a contactless current sensor on the battery wire. Many control strategies can be implemented to control such system. The paper is focused on the efficiency optimization. This purpose is achieved through regulation of supercapacitor based energy storage current proportionally to the battery current in the discharge process. Theoretical equations, Matlab simulation results and experimental results on the test bench are presented in the paper and show the validity of the approach.

Keywords
low speed electric vehicles, lead-acid batteries, supercapacitors
Hyperlink
http://www.tf.llu.lv/conference/proceedings2016/Papers/N276.pdf

Kroičs, K., Bražis, V. Ultracapacitor Based Storage System for Lead-Acid Powered Light Electric Vehicle Retrofit. In: 15th International Scientific Conference "Engineering for Rural Development": Proceedings, Latvia, Jelgava, 25-27 May, 2016. Jelgava, 2016, pp.1386-1394. ISSN 1691-5976.

Publication language
English (en)