Page - 15 - in Emerging Technologies for Electric and Hybrid Vehicles

Energies 2017,10, 1217 Figure 18. Drive trainof series hybrid system. The engine isused togenerate electricity only and supplyto themotor througharectifier. Powerfromthebatterygoes to themotor throughaDC-DC converter [30]. 3.2.2. ParallelHybrid ThisconfigurationconnectsboththeICEandthemotor inparallel to thewheels. Eitheroneof themorboth takepart indelivering thepower. It canbe consideredas an ICenginevehiclewith electricassistance [4]. Theenergystorages insuchavehiclecanbechargedbytheelectricmotorby meansof regenerativebrakingorbythe ICEwhenitproducesmore thanthepowerrequiredtodrive thewheels. Parallelhybriddrive train is showninFigure19. Table3showsthemeritsanddemeritsof thisconfiguration,whileTable4compares theseriesandtheparallel systems. Figure 19. Drive train of parallel hybrid system. The engine and themotor both can run the can throughthemechanical coupling[30]. 15