Types Of Inverters

Types Of Inverters

There are three main types of solar panel inverters available in the Australian market, these being, string inverters, hybrid inverters and micro inverters. All these inverters perform the same function of converting DC to AC but have different methods and positionings in a PV system.

String Inverter

The string inverter is the most commonly used type of inverter for residential PV systems. PV systems with a string inverter have all the panels wired together by one or more ‘strings’ which then connects to the centrally placed inverter. String inverters are typically located outside on a wall of the house. These inverters are best utilised on roofs with consistent unobstructed sunlight throughout the day. The downside to the ‘string’ connection is, if one panel experiences a power drop due to partial shading, for example, the whole string is affected.

Hybrid Inverters

Hybrid Inverters have the same characteristics as a string inverter with the additional feature of a charge controller, which is used when connecting a battery to the system. Hybrid inverters have become more popular recently as homeowners require a system that is “battery ready” with a view to installing a solar battery sometime in the future.

Micro Inverters

Micro Inverters are small individual inverters that are connected to the back of each solar panel, performing the same function as a central inverter only at a panel level. This is a more efficient system, although, generally more expensive.