- #1
ararrati
- 10
- 0
Hi guys,
I am working on a school project. I have an inclined cart mounted on rails moved by a winch. I would like to install an alternator on one of the cart axis, so I can charge a 12V car battery - 20Ah. The wheel turns at 12 RPM. At that speed the alternator will not work, so I am also adding a 1:20 gear ratio to turn up the RPMs to about 240. This is the alternator I am thinking of buying ( http://www.windbluepower.com/Permanent_Magnet_Alternator_Wind_Blue_Low_Wind_p/dc-540.htm ). There is an RPM - Volt-Amps graph which shows that at 240 RPMs it yields 3 amps and 25V. The battery will power 4 actuators, which will use 1.2 Ah. The wheel will only charge for 5 minutes@240RPM, every cycle. Will this work or will the battery discharge after 20 or so cycles. What else can I do to improve my design.
Regards,
Armando
I am working on a school project. I have an inclined cart mounted on rails moved by a winch. I would like to install an alternator on one of the cart axis, so I can charge a 12V car battery - 20Ah. The wheel turns at 12 RPM. At that speed the alternator will not work, so I am also adding a 1:20 gear ratio to turn up the RPMs to about 240. This is the alternator I am thinking of buying ( http://www.windbluepower.com/Permanent_Magnet_Alternator_Wind_Blue_Low_Wind_p/dc-540.htm ). There is an RPM - Volt-Amps graph which shows that at 240 RPMs it yields 3 amps and 25V. The battery will power 4 actuators, which will use 1.2 Ah. The wheel will only charge for 5 minutes@240RPM, every cycle. Will this work or will the battery discharge after 20 or so cycles. What else can I do to improve my design.
Regards,
Armando
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