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Paolo Scalisi

The Electric Scooter: The New Choice for Urban Mobility

Paolo Scalisi
Page 1 / 3   >   >>
SunitaT0
SunitaT0
10/29/2013 3:14:21 AM
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Master
Re : The Electric Scooter: The New Choice for Urban Mobility
Electric scooters are plug-in electrical vehicles with 2 or 3 wheels that could be recharged from any exterior cause of electricity, and the voltage is stored on board in a rechargeable battery, which controls one or more electric vehicles to attain locomotion. Electrical motorcycles, as well-known from scooters, do not have a step-through frame.

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JAYARAMAN KIRUTHI VASAN
JAYARAMAN KIRUTHI VASAN
10/18/2013 4:41:30 AM
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Master
Re: EV- the future of mobility
@Wketel,

I am curious to know when the power drawn is at its peak. My guess is at the start and while the vehicle is stopping suddenly. Is it right?

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WKetel
WKetel
10/15/2013 9:41:58 PM
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Artist
Re: EV- the future of mobility
Jayaraman, yes, inertia is always present, and at startup it must be overcome. BUT not with a huge current draw, but rather 2x or 3 x the rolinh currentdraw. My point being that a rational start is not a huge horsepower event, but rather a gental accelleration.

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JAYARAMAN KIRUTHI VASAN
JAYARAMAN KIRUTHI VASAN
10/15/2013 12:52:44 PM
User Rank
Master
Re: EV- the future of mobility
@Wketel,

Could there be an accelerated power requirement at the start as the stationary vehicle presents a greater mass impact compared to a moving one? Once it starts moving, the momentum would aid further motiion while the power needed is just to maintian the motion , isn't it?

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RB3200
RB3200
10/9/2013 3:36:53 PM
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Newbie
Re: Snow Season -Update E-Scooter
A major problem of battery operated vehicles is that the battery capacity plummets in a real cold climate area. I think for such areas the vehicle would need an alternative power source, perhaps a fuel cell (hydrogen?). For an electric vehicle that fuel cell should then generate electricity, unless it can only work with low efficiency when compared to a direct combustion driven engine with the same fuel. In that case the cold climate users would be better off buying a fuel cell vehicle, or at least a fuel cell powered plug-in motor block for the winter time.

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WKetel
WKetel
10/2/2013 7:18:25 PM
User Rank
Artist
Re: EV- the future of mobility
The initial load for a scooter is greater than the constant speed load, but not as klarge as it could be for the reason that the scooter must start off a bit gently. A maximum drive startoff could result in a spectacular wheel-stand, which is probably not the intent of most users. In addition, the pulses are current limited by the motor winding inductance, at least for some small period of time. power limiting through pulse width control will be very important in assuring safe operation and maximum battery charge life.

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etnapowers
etnapowers
10/1/2013 1:40:26 AM
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Master
Re: EV- the future of mobility
Exactly, there are some electric radar system that are being investigated to avoid collisions, these systems have to be reliable to ensure the overall reliability of the system

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JAYARAMAN KIRUTHI VASAN
JAYARAMAN KIRUTHI VASAN
10/1/2013 12:28:42 AM
User Rank
Master
Re: EV- the future of mobility
etnapowers,

Is it because of some advanced feature incorporated in the motors? Kindly share more details.

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etnapowers
etnapowers
9/30/2013 10:08:40 AM
User Rank
Master
Re: EV- the future of mobility
The managing of the initial load has been optimized in electric vehicles and now it's comparable to that of non electric motors or even better, this is due to a immediate disposal of the power source in the start up phase.

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JAYARAMAN KIRUTHI VASAN
JAYARAMAN KIRUTHI VASAN
9/30/2013 3:08:09 AM
User Rank
Master
Re: EV- the future of mobility
The initial thrust needed from stationary position to moving could determine the capacity of the batteries. The initial load could be much more than that would be needed while in motion. It would be interesting to see how the internals of EV are empowered to take this on.

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