2020 3rd International Conference On Green Energy
And Environment Engineering
IOP Conf. Series: Earth
and Environmental Science
633
(2021) 012007
IOP
Publishing
doi:10.1088/1755-1315/633/1/012007
7
required by engine is more to charge the battery by supplying rotational
power to the motor and the
wheels. C) is the throttle graph which is made constant value 0.11.
The Figure 5 above shows battery/motor and engine power Vs time, as we know for acceleration the
electric motor is only used and engine is to maintain the vehicle speed, so when the acceleration starts
the motor starts powering at 20s so it as in figure the motor power is increasing and the engine power
has slight changes. The motor decreases after the 140s second because vehicle starts to deaccelerate.
Negative curve after the motor stops, in the figure it shows the power that is absorbed by the motor to
charge some amount of battery from the rotating engine shaft and some amount of power is gained due
to regenerative
braking
.
Figure 5.
Power Curve of Engine and Battery (Motor)
Figure 6.
Battery
Charge
curve
Figure 7.
Battery
Electrical losses
2020 3rd International Conference On Green Energy And Environment Engineering
IOP Conf. Series: Earth and Environmental Science
633
(2021) 012007
IOP Publishing
doi:10.1088/1755-1315/633/1/012007
8
The figure 6 above shows the battery charge usage and battery losses is shown by the figure 7 above.
Figure 6 above shows the battery charge used by the electric motor during the whole process as the
acceleration increase the battery charge usage also increases and it used until the deacceleration of the
vehicle and then it decreases. The figure 7 above shows battery losses due various reasons, it increases
during the acceleration due more current flow and decreases during deacceleration.
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