When determining the best suited grid-connected PV system for your household, you must ensure that your selected solar array matches the capabilities of your selected inverter! There are precise calculations that must be undertaken to verify the array configurations that allow for the most appropriate connection to your chosen inverter.
But first, let’s begin by defining the term “array” and “inverter”.
What is a solar array?
A solar array is a collection of solar panels that produce electricity as a system. They are typically described as the solar panels themselves and how they are positioned. You may have come across this term when researching online, speaking to a consultant or installer or even reviewing a solar quote.
What is an inverter?
A solar inverter is a device that converts the direct current (DC) output of a PV solar panel into alternating current (AC) electricity that can then be fed into the grid.
Still not sure what we’re on about? Click here to read The Energis Glossary of Solar Terminology. It’ll help you understand some of the solar slang mentioned below!
The team at Energis have provided a simplified overview to educate potential solar consumers of how to go about matching your array with the right inverter. Follow these two steps to determine the best pairing.
Step 1: Select Your Inverter
An inverter should be chosen based on the PV array’s energy output, how well it matches the array’s configuration with the operating specifications of the inverter(s) as well as whether your system utilizes a number of small inverters or a central inverter. Once you have chosen your inverter, then it is time to determine your panel layout!
At Energis, we have a wide range of quality brands of inverters to suit your needs. From central inverter brands such as Fronius, SMA and Solar Edge as well as small (or micro) inverters from brands such as Enphase. Remember, it is important to have a site inspection before going ahead with any solar device or PV installation.
Step 2: Match the Array to the Inverter Specifications
There are three things you will need to look at in order to match the array to your inverter specifications. They include the voltage, current and power ratings. The voltage rating establishes the minimum and the maximum number of panels in each string (a series of connected panels). The current rating determines the maximum amount of parallel strings in the array. The power rating establishes the maximum number of panels in the array.
Remember, don’t be afraid to question your solar consultant; If they cannot answer your questions confidently then consider it a red flag! At Energis, our sales consultants will guide you through all aspects and requirements of your solar power system as well as go above and beyond to ensure your wants and needs are satisfied.
