A clean power system combining fuel cell and ultracapacitor and its application in electric scooter

This paper presents a clean power system combining fuel cell and ultracapacitor. The fuel cell, which acts as the primary power source, is used for the continuous load requirement. The ultracapacitor, which acts as the secondary power source, is used for the peak load requirement. A controller also is designed to determine and assign the power between the fuel cell, ultracapacitor and motor..and this clean power system is applied to an electric scooter. The result of experimentation shows that the system is very effective and steady.