Pure Sine Wave Inverters

Solar energy inverters:

As we mentioned previously, solar energy inverters are devices that connect directly to the PV panel and convert the current received from it (direct current DC) into (alternating current AC) to operate electrical devices.

There are two types of waves:

• Pure Sine Wave Inverter:

This type of inverter outputs an alternating current similar to that of an electrical network with a regular sine wave and flows very smoothly (its shape is curved).

This wavelength is suitable for sensitive devices such as computers, motors, medical equipment and sensitive electronic devices.

Disadvantages: high cost and higher weight

• Modified Sine Wave Inverter:

This type of inverter outputs alternating current with an irregular wave (its shape resembles a square). It is not suitable for sensitive devices, but it is satisfactory for less complex devices such as phone chargers, heaters, and some light electronic devices.

Its advantage: less weight and low cost.

In short, we can liken the two waves to the wheels of a car (the pure wave is a round wheel and the modified wave is a square wheel). The car’s movement is smooth in the first example, and annoying and destructive in the second example. The square wave creates noise that leads to an increase in temperature and thus damage to electrical appliances.

How to distinguish between pure and modified wave inverters:

Adapters can be identified by the label on the product, but sometimes these specifications do not match a correct description of the device according to the credibility of the manufacturer.

The wave can also be detected through a power quality device.

Finally, before choosing an inverter, you should know the devices you want to operate, and whether they are sensitive and susceptible to damage due to a modified wave, or whether they are simple and work with both waves.

Article written by: Solar Point team