Step-Up/Boost Converter powered Speed Controller

[[email protected]]

Hello Group,

I am researching low power electric vehicles (trikes), and have found
they mostly run on 24-48VDC using several 12VDC batteries (e.g. 12Ah)
in series.

Running these batteries in series (e.g. 36VDC) causes one to either
purchase a 36VDC charger or to disconnect the series and reconnect in
parallel for charging at 12VDC.

As an alternative to using three 12VDC 12Ah SLA batteries in series, I
am considering using a large 12VDC 54Ah AGM battery along with a 12VDC
to 36VDC step-up/boost converter to power this system.

I have found a 12VDC Boost Converter
(http://www.powerstream.com/dc36.htm), but it isn't quite powerful
enough (200+ Watts vs 400+ Watts) and am concerned that it might
produce too much noise or other problems for the speed controller.

Please post any advice/recommendations, thanks,
Keller Beyer
[email protected]

 

[[email protected]]

Hello Group,

I am researching low power electric vehicles (trikes), and have found
they mostly run on 24-48VDC using several 12VDC batteries (e.g. 12Ah)
in series.

Running these batteries in series (e.g. 36VDC) causes one to either
purchase a 36VDC charger or to disconnect the series and reconnect in
parallel for charging at 12VDC.

As an alternative to using three 12VDC 12Ah SLA batteries in series, I
am considering using a large 12VDC 54Ah AGM battery along with a 12VDC
to 36VDC step-up/boost converter to power this system.

I have found a 12VDC Boost Converter
(http://www.powerstream.com/dc36.htm), but it isn't quite powerful
enough (200+ Watts vs 400+ Watts) and am concerned that it might
produce too much noise or other problems for the speed controller.

Please post any advice/recommendations, thanks,
Keller Beyer
[email protected]

 

[ehsjr]

Hello Group,

I am researching low power electric vehicles (trikes), and have found
they mostly run on 24-48VDC using several 12VDC batteries (e.g. 12Ah)
in series.

Running these batteries in series (e.g. 36VDC) causes one to either
purchase a 36VDC charger or to disconnect the series and reconnect in
parallel for charging at 12VDC.

As an alternative to using three 12VDC 12Ah SLA batteries in series, I
am considering using a large 12VDC 54Ah AGM battery along with a 12VDC
to 36VDC step-up/boost converter to power this system.

I have found a 12VDC Boost Converter
(http://www.powerstream.com/dc36.htm), but it isn't quite powerful
enough (200+ Watts vs 400+ Watts) and am concerned that it might
produce too much noise or other problems for the speed controller.

Please post any advice/recommendations, thanks,
Keller Beyer
[email protected]

A 36 volt charger is hard to build? Or is it a question
of expense?
Ed

 

[[email protected]]

Hello Group,

I am researching low power electric vehicles (trikes), and have found
they mostly run on 24-48VDC using several 12VDC batteries (e.g. 12Ah)
in series.

Running these batteries in series (e.g. 36VDC) causes one to either
purchase a 36VDC charger or to disconnect the series and reconnect in
parallel for charging at 12VDC.

As an alternative to using three 12VDC 12Ah SLA batteries in series, I
am considering using a large 12VDC 54Ah AGM battery along with a 12VDC
to 36VDC step-up/boost converter to power this system.

I have found a 12VDC Boost Converter
(http://www.powerstream.com/dc36.htm), but it isn't quite powerful
enough (200+ Watts vs 400+ Watts) and am concerned that it might
produce too much noise or other problems for the speed controller.

Please post any advice/recommendations, thanks,
Keller Beyer
[email protected]

Make/buy a 36v charger.

The charger will cost less (and/or be easier to build) than the boost
converter, and the resulting system will be more efficient.

If you switch to a 12v battery system, you'll have to run very high
currents, and the weight of and losses in the boost converter will
detract from your runtime.

Cheers,
James Arthur