Saturday, December 3, 2011

Things You Need Before You Start Building Your Own Basic Solar Panel Power System

!±8± Things You Need Before You Start Building Your Own Basic Solar Panel Power System

Start with following:

Firstly you need a solar panel to start. Recommended are the Mono-crystalline as they are the most advanced at the moment, they have quite a long life (15-25 years).

Mono-crystalline panels are made of little square cells about 5 x 5cm each, connected in series. Mono-crystalline panels can be found anywhere from 1 W to 280 W at the moment at 12 V or 24 V. It is very important to place the panels in a good spot where they will get the most sun on them and a safe and strong mounting is required as well.

Next you need some wire which recommended is the solar cable/wire with double insulation and UV protected, outdoor ready. Depending on how big you want the system to be, the more advanced equipment you find available and the more expensive it is, but we`re talking about a basic system to start with. For one of these systems you can just use a power gardening wire hidden from the sun, it will do the job. At this point we have the panel, firmly installed with a good positioning towards the sun and wired. That`s all what you need to produce power.

There are three ways to use the power that is getting produced by the panel:

1-use the power that is getting produced straight from the panels (during the day only)

2-store the power in a battery bank and use it when needed

3-export the power produced straight to your home grid (again during the day only)

List of components I've used with my system:

-1x 12 V, 100 W solar panel

-1x 24 V, 120 W solar panel

-4x 4.5 KA fuses

-1x C 60 (60 A) Xantrex Power charge controller (12 V or 24 V option)

-1x 300 W grid tie inverter Power Jack - China 20 V to 240 V

-1x 250 W grid tie inverter Masspower - USA 20 V to 240 V

-2x Power Meter UK

-2x 30 A fuses

-1x Bit MB Power inverter 3000 W continue and 6000 W peak 24 V to 240 V DC to AC (modified sine)

-4x 150 Ah 12 V Deep Cycle batteries, connected in series and parallel so they work as 24 V, 300 Ah

-1x DC 4 way switch

-14x battery cables

-2x pairs P.V. plug

-20m outdoor electric wire

Watch the video for this article: www.dashony.com

In my next article: How it works: Power Inverter, Power Charge Controller, Grid Tie Inverter - everything you need to know before you start building your own solar panel power system or a wind turbine system


Things You Need Before You Start Building Your Own Basic Solar Panel Power System

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Friday, October 28, 2011

Home Solar Power System Batteries

!±8± Home Solar Power System Batteries

There are a number of different types of batteries, but which one is best for solar power? By the end of this article, you will know the answer. The sun doesn't shine all the time (take for example, night) so if you are going to install a solar power system and are going to want to use electricity when there is no sunlight, you're going to need some method of storing the power produced when there is sunlight. Batteries and a solar charge controller are the way to accomplish this. So, let's talk about the different types of batteries and which type is best for solar.

The first question you might have is about the newer battery technologies used in hybrid cars or laptops or iPods. There are reasons these batteries are a good fit for those devices, but as you'll see they don't apply to solar power systems.

The biggest advantage these newer battery technologies have is size and weight. These newer battery technologies, though, cost a great deal more than the older technologies for the same capacity. These newer types of batteries make devices like cell phones more expensive, but they allow the devices to me much smaller and lighter and in these applications size and weight are more important than cost.

Your solar power system, though, isn't going to move around. Capacity, in contrast, is going to be very important. So, much more important than size or weight will be cost per watt/hour of capacity.

When it comes to best cost for capacity, the best type of battery technology is plain old sealed lead acid batteries. That's right, the same kind of battery that is in your car. The newer types of batteries are going to cost you between 2 and 4 times what sealed lead acid batteries will for the same capacity. Sealed lead acid batteries are rugged, cheap and safe.

The most common voltage for sealed lead acid batteries is 12 volts. The most common voltages for home solar power systems are 12, 24 or 48 volts. These voltages can easily be obtained by connecting together the proper number of 12v batteries in series. You then take these groups of batteries tied together in series and wire the groups in parallel to increase the amount of power you can store and then later release from the batteries.

A 12 volt solar charger will use the electricity produced by the solar panels to keep the batteries charged. The charger will ensure the voltage going to the batteries is correct, and will prevent overcharging.

One last thing you will need if you want to power appliances you usually plug into the wall is a power inverter. To mix power from your batteries and from the power company, or to sell excess electricity back to the power company, you will need a grid tie inverter. If not, a standard power inverter will be cheaper and work fine for your standard appliances.

That's pretty much it. When it comes to batteries for a solar system, the old technology is best. Sealed lead acid batteries are the best choice for home solar power systems.


Home Solar Power System Batteries

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