Step-Up/Boost Converter powered Speed Controller

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- beyeriii
  
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posted
17 years ago

Wed, Jun 7, 2006 11:18 PM

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

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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 snipped-for-privacy@aol.com

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- ispeedster3
  
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Vote on answer
posted
17 years ago

Thu, Jun 8, 2006 1:16 AM

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- ehsjr
  
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posted
17 years ago

Sat, Jun 10, 2006 5:25 AM

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

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- dagmargoodboat
  
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posted
17 years ago

Sat, Jun 10, 2006 4:09 PM

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

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