Key Factors for Solar Inverter Efficiency Improvement

An inverter, also known as a power regulator or power adjuster, is an essential part of a photovoltaic system. The main function of a solar inverter is to convert the direct current generated by solar panels into alternating current used by household appliances. All electricity generated by solar panels must be processed through the inverter before it can be output to the outside.

Standards for the conversion efficiency of solar inverters

For types of inverters for solar, they are consumables, and their lifespan will be determined by the passage of time and the conversion rate during use. In order to ensure the service life and safety of the inverter, relevant standards have been formulated, which is to set a limited value for the conversion efficiency.

And this limit value is set based on professional and scientific basis, not arbitrarily. When there is a transformer, the conversion efficiency of the inverter must be higher than 94%, and when there is no transformer, the conversion efficiency must be higher than 96%. Therefore, many brands in the market will try to improve the conversion efficiency of their products to ensure sufficient market competitiveness.

How to improve conversion efficiency of solar inverter?

The premise of improving the conversion efficiency is to reduce the loss. The losses of IGBT fundamentally determine whether the conversion efficiency can be improved, so efficiency can be improved by reducing the losses of IGBT. However, for the solar inverter factory,  it is necessary to pay attention that reducing the losses should have certain limitations and switching frequency should be reduced moderately to avoid the occurrence of deteriorated power quality.

Furthermore, to improve the conversion rate of a solar inverter, the losses of the transformer need to be reduced. The losses of the transformer are usually derived from the copper and iron losses. Effectively reducing these losses can significantly improve the inverter's conversion rate. In addition, the losses of the reactor are also a key factor affecting the conversion rate. On this basis, reducing the reactance of the reactor can effectively improve the efficiency of the inverter.

The need for solar inverters to increase conversion rates

Why is it necessary to improve the conversion rate of solar inverters? Improving the conversion efficiency is crucial, as it can effectively increase profits and reduce costs. If, on a relatively favorable basis, the inverter can generate additional twelve degrees of electricity per day, the amount of excess electricity generated in one year is staggering.