The choice of the solar inverter must begin with the determination of the type of photovoltaic equipment (grid, autonomous, hybrid). Each of these systems has its own characteristics and only special inverters are suitable.

The next step is to determine the power, location and installation method of the solar panel. A very important factor when choosing an inverter is the current mismatch of the solar panel for the following reasons:

  • Install part of the solar panel at a different angle.
  • Install solar panels in different places facing south.
  • Regular (daytime) panel shading issues.

All of these factors influence the choice of a particular inverter model. For example, an inverter with two MPPT controllers or several independent inverters installed.

Power inverter and solar panel

The rated power on the AC side determines the maximum power consumption that can be connected to the inverter or the maximum amount of energy that can be connected to the grid. This parameter is always displayed in the data sheet. For optimal efficiency, the inverter should be operated as close to rated power as possible. Depending on the model, the conversion efficiency can reach 98%. When the amount of power generated by the solar panel decreases, such as on a cloudy day when the solar intensity does not exceed 200W/m², the efficiency of the inverter drops sharply.

Solar panel specifications

Solar panels are just one power source that produces pure direct current.

Since this direct current depends on the intensity of the sun’s rays, the output signal is usually variable and depends on the location of the sun and weather conditions.

Solar panels are also one of the power sources, but they are very different from home power supplies that use transformers and SMPS. The difference between these two options lies in their current and voltage characteristics.

Our home DC power supplies are designed to produce higher currents and voltages ideal for a particular load or application.