If you are planning to convert to solar energy in your home either partially or completely, you must look into the parts that make up the entire solar energy systems. The solar inverters for home use rank high up on the list of such parts. In fact, such is its importance that, even when you already have all the other components but the solar inverter is absent, your solar energy plans will be for naught.
Understanding Electric Currents
But before we can understand the importance of solar inverters, we must first know about the necessity of transforming electricity from direct current to alternating current for home use. Direct current is defined as the unidirectional flow – one constant direction – of electrical charge from a direct power source. Batteries, solar cells and thermocouples are just a few of the sources of direct current.
Alternating current is electric charge that periodically reverses direction or electricity running back and forth through the circuit. The electric company provides alternating current to the homes in order to power up the appliances.
Transforming the Currents
Where do the solar inverters for home come in? To put it simply, the solar inverter converts the direct current gathered from the solar panels and stored in the batteries into alternating current for use on the household appliances plugged to the solar energy system. Keep in mind that plugging an alternating current appliance into a direct current socket will damage said appliance beyond repair since it is not configured to accept the latter.
Solar inverters of the advanced kinds are also adapted for use with the photovoltaic arrays. These are outfitted with anti-islanding protection and maximum power point.
Knowing the Types
When choosing from among many choices of solar inverters for home, your first consideration is the type of solar inverter required for your particular system. There are three main types of solar inverters:
Standalone inverters are used in isolated systems in which the direct current energy is drawn from batteries charged by the photovoltaic arrays. You can incorporate integral battery chargers for the replenishment of the battery from an alternating current source as well as anti-islanding protection, if and when available and necessary.
Grid tie inverters shut down automatically during utility outages for safety reason. It must be emphasized that n backup power is available in this type of solar inverters for home.
Battery backup solar inverters are designed to draw electrical energy from the battery, manage its charge through an onboard charger and then export whatever excess energy is available to the utility grid. The main advantage of a battery backup inverter is its capability to supply alternating current energy to selected loads even during a utility power outage, which necessitates the addition of an anti-islanding protection.
With efficiencies higher than 90 percent, most solar energy inverters are cost-effective. Of course, the assumption is that you have chosen the correct inverter for your home since the incorrect choice means lower efficiency, not to mention possibly damaged house appliances. So, when selecting your solar inverters for home, look at the total usage, size and sine-wave of your solar energy system before making a decision.