DIY Solar Panels World

Solor Panel Inverters – Multifunction Solar Panel Inverters

Are you ready for what Multifunction Solar Panel Inverters can do for you? Let’s jump right in…

Multifunction solar panel inverters combine the best from Stand-Alone Solar Panel Inverters and Synchronous Solar Panel Inverters. They are of course more expensive, but these are the best choice for your solar energy panels.

This type of inverter allows you to generate excess power to be stored in a battery bank. As such, you are able to use energy from the grid, from the solar panels or from stored energy in the batteries. You can even connect a standby generator to the whole setup. Let me illustrate…

During the day, solar energy panels supply your household appliances with power. At the same time, the battery bank is charged up to store energy for the night. If there is surplus electricity, they can be sold to your local power company.

By evening, the batteries will be charged up. At this time, the inverter provides AC power to the house from the batteries. If the batteries are flat, the inverter taps into the grid to charge the batteries and power up the house at the same time.

If a standby generator is used, the inverter will synchronize its power so it can be added to an existing source of power. Many multifunction solar panel inverters are not as efficient as synchronous inverters because the system must have a battery. However, they offer functions that grid-tied inverters do not.

Sizing Your Solar Energy Panels – Part 2

After you know where most of your household energy goes to, you are now ready to plan for your system size. For grid-tied system (without batteries and charge controllers), you only need to make sure the inverter you use is large enough to handle the power generated by the solar panels.

If you are thinking of scaling up your system in the future, you can get a bigger inverter so there’s room to handle more power. You can also get an inverter that fits the power output of your current solar panel, and then add another inverter when you bring in more solar panels. Between these two options, it’ll be more cost effective to have a larger specification if you know your plans beforehand.

For solar power generators with batteries, you’ll need a little more planning…

For a start, we’ll look at how to determine the size of your solar array. Here are the steps to do it:

1. Compute the average Watt-Hours (usage) per day

2. Find out the Average Daily Solar Radiation figure for your location

3. Calculate the number of watts you have to generate per hour of solar exposure (divide #1 by #2)

4. With the solar module you have in mind, multiply its power rating by a factor of 0.7. If you are using a Maximum Power Point Tracking (MPPT) charge controller, you’ll multiply it by a factor of 0.8 instead.

5. Finally, you get the number of modules needed when you divide #3 (energy you need) by #4 (energy generated by your solar panels)

After you arrive at the number of solar modules you need, you’ll also know how much space is needed on your roof. If there isn’t enough space, choose a more efficient photovoltaic module and do the calculations again. Going over this a few times, you will be able to find the solar module that’s most suitable for you and at the right price.