What is a solar inverter, and how does it work? Types of inverters in solar energy generation
What is a solar inverter?
Inverters are one of the most important components of a solar energy system.
An inverter is a power electronic component or circuit that transforms energy output from solar panels, which is in the form of direct current (DC) electricity, into alternate current (AC), which is easily consumable electricity for residential or commercial uses.
How does a solar inverter work?
In the solar power system, solar panels generate electricity in the form of DC (direct current). A constant voltage is maintained in one direction when electricity is generated via DC. The voltage in an AC circuit changes from positive to negative, causing electricity to flow in both directions.
Power electronics refers to equipment that controls the flow of electricity, such as inverters.
In a PV (photovoltaic) system, this component (the inverter) is a critical BOS (balance of system) component that allows the use of normal AC-powered equipment. Among other things, these inverters handle the tracking of maximum power and protection against islanding when used with PV arrays.
Types of solar inverters:
There are many different types of inverters used in solar power systems.
1. String inverters:
Residential solar installations usually consist of one string inverter, which is the most common inverter type. Because it connects solar panels with a string, this type of inverter is known as a “string inverter.”
Generally, these inverters are used when the panels are arranged on a single plane, so the panels do not need to face in different directions. String inverters are more cost-effective than other inverters that are used in solar energy generation. It is possible to use these inverters without any shade at all. But this inverter is not optimal for having solar panels facing different directions.
If you are looking to monitor each panel individually, then the string inverters are not recommended.
For residential uses, micro-inverters are the very first choice.Microinverters are small units that convert power and are built into each individual solar panel. The performance of each solar panel can be monitored using micro-inverters.This enables each panel to operate at its best without depending on its neighboring panels. The power output of the entire solar panel system will be unaffected by nearby walls that provide shade for the majority of the day. Only one panel is impacted by any efficiency decline.
3. Hybrid Inverters
In India, hybrid inverters also referred to as “multi-mode inverters,” are relatively rare and let you connect batteries to your solar power system.
When the solar and batteries use the same inverter and the DC from the solar panels charges the batteries using a DC charger, this device engages with the connected batteries through “DC coupling,” and its electronics manage the battery’s charging and discharging.
The importance of a solar inverter
Why is an inverter required in the solar power system?
As we all know, in a solar power system, solar panels generate electricity using solar energy.
But we can’t use this electricity directly because solar panels generate DC (direct current) electricity, and in India, we generally use AC (alternative current) for residential or commercial purposes. That’s why we need to convert DC electricity into AC electricity. And here, the inverter is used for converting the DC electricity to AC electricity.
1. How much does a solar inverter cost?
A solar inverter cost is depending on the kilowatt size of the inverter, like 3 kw havells solar ongrid inverter cost is 22,500 rs in November 2022.
2. How long does a solar inverter last?
While the average solar power inverter has a lifespan of five to ten years, they do need routine maintenance to ensure maximum solar PV inverter efficiency.