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Re: Solar Battery Plant Question
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We are starting to think at this phase of the project to simplify it and use a single deep cycle marine battery. One battery, no or'ing.... One panel about 200 watts or a couple at 125 watts, and some variety of charge controller, not sure what kind. We are not looking to generate 500 watts but at most half that. So now we need to pick panels and charge controllers. The craft is large, just over 9 feet long and about 6 feet wide but we would like to not cover more than 2/3 of the top. |
Re: Solar Battery Plant Question
You really need to figure out how much current the thing draws....then you can actually design a power system for it.
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Re: Solar Battery Plant Question
Ed,
That sounds like a better solution. There are many places where you can pick up PV cast offs, surplus and smaller sizes which can be rewired (series/parallel) to fit your needs for power and size. There are also many suppliers of charge controllers designed for RV and agricultural use that would be perfect as well. |
Re: Solar Battery Plant Question
Our battery expert had the following to add:
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Re: Solar Battery Plant Question
Thanks for the comments.
I just got in at 9:30 pm. This is as bad as build season. 4 and 5 days a week. We are thinking about building a simulation in Labview to model the power management to help get a feel for how this is gonna roll. We have to get on the lake in a few days. We can do a bollard test and profile the power consumption at various throttle settings. Any recommendations on charge controllers - simple type - manage the battery without disconnecting the load. Thanks again. Ed |
Re: Solar Battery Plant Question
We used one of these
http://www.affordable-solar.com/morn...controller.htm on our underwater ROV power system. What kind of motors/props are you using? trolling motors or something else? |
Re: Solar Battery Plant Question
Ed,
When I was checking I found this site... http://www.solarpanelstore.com/solar...ntrollers.html and this site... http://www.absak.com/catalog/index.php/cPath/27_137 Both have a variety of controllers, some of which have load sensing and cutoff for battery protection. Both sites have the Morningstar product Jim recommends which looks pretty good if it fits your load requirements. |
Re: Solar Battery Plant Question
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Minn-Kota Endura 30 - 30 lb thrust, 12 VDC, factory props. IFI Control System - 2005 model if I remember correctly. Victor 884 speed controllers. Electronics are contained in a Pentair NEMA fixture. The motors are 4 wire circuits. A call to their tech support reveals that we cut and cap two wires and connect the other two to the victor. 8020 automation framing attached to lightweight fiberglass, foam, aluminum pontoons. The pontoons are closed cell polystyrene foam topped with an 0.030" aluminum cap that is shaped in a 2" tall, 10" wide beam. The cap acts as a beam and binds the automation frame to the pontoons. The pontoons have a fiberglass skin that is essentially in tension. If you look at the side of the craft it looks like a bridge structure, the aluminum cap is in tension as the downward force on the legs try to spread. The cap disperses the load across the foam. The trick was to figure out how to disperse the stress and keep the weight very low. One days we need to make some drawings and explain how the stress work. Each pontoon is only about 25 or 30 lbs each. A design goal was to be able to carry the machine to a lake that doesn't not have a landing. So the basic machine needs to weight something like a heavy FRC robot. That is asking a lot considering this is 9+ feet long. We have been working on this for two years now. Construction pictures are here The pictures haven't been updated in a year. |
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