Napęd hybrydowy pojazdów miejskich z podwójnym zasobnikiem energii elektrycznej

This paper presents an alternative solution of the electric hybrid drives for a city bus. The drive include an internal combustion engine and an electric machine with permanent magnets which works as motor or generator, in dependence on demands. Use of a dual energy storage including batteries and supercapacitors is the innovative approach to the problem. A reversible dc-dc power electronic converter transfer the energy from energy storage to electric machine during the vehicle starts and accelerate, and transfer the energy from electric machine to energy storage when the vehicle slow-down. The power transmission system is control by the microprocessor unit system.