Transformerless Inverters

Updated: Dec 26, 2019

A power inverter or inverter is an electronic appliance that converts DC (direct current) electricity from sources such as batteries or solar cells to AC (alternate current) electricity for use in appliances.

The Uses of Transformers In Inverters

Solar cells generate direct current from sunlight in the regions of 12V, 24V, 48V, 72V or 96V. As do batteries. A transformer inside the inverter is used to step up the generated voltage to the 220V required for use in appliances. A transformer is used to step-up or step-down the generated voltage while the inverter is used to convert it from DC to AC.

A transformerless inverter by definition, is an inverter which does not have a transformer. Since the function of stepping up the voltage is necessary, transformerless inverters do not dispense with this function, rather the function is carried out in an entirely different manner.

What then Is the Difference Between Conventional Inverters and Transformerless inverters?

The major difference is that the transformer is replaced with a computerized multi-step process and other electronic components. These components play the role of the transformer.

A transformerless inverter will be described as 'TL' by its manufacturers. Most, if not all of Growatt inverters are transformerless inverters.

The Advantages of Transformerless Inverters Over Conventional Inverters

  • Transformerless inverters are generally more efficient than conventional inverters because because they are able to avoid internal energy losses and extra component costs.