To assist in the vehicle propulsion

To convert electrical energy to mechanical energy

To convert mechanical energy to electrical energy

To generate braking force for the regenerative braking mechanism

Battery

Mechanical coupling

Generator

Motor 

To convert DC battery electricity to power AC electric motor

To convert AC power from the charging station to DC battery 

To power the electric vehicle air conditioning system. 

To invert the polarity of the DC power 

Battery EV

ICE Vehicle

Series Hybrid EV

Parallel Hybrid EV

To convert the high DC voltage to low DC voltage. 

To convert the electrical energy in the battery for vehicle propulsion. 

To supply electricity to the motor. 

To convert mechanical energy to electrical energy and vice versa.