Modified sine wave inverter

The output waveform of the modified sine wave (or corrected sine wave, quasi sine wave, analog sine wave, etc.) inverter has a time interval from the maximum positive value to the maximum negative value, which improves its use effect. However, the corrected sine wave is still composed of dotted lines and belongs to the category of square waves, with poor continuity and blind spots.

A modified sine wave inverter should avoid powering inductive loads. Inductive load refers to high-power electrical products produced by the principle of electromagnetic induction, such as motors, compressors, relays, fluorescent lamps, etc., which require a much larger starting current (about 5-7 times). Current required maintaining normal operation. For example, a refrigerator that consumes about 150 watts in normal operation can start with over 1000 watts. In addition, since the inductive load will generate a back EMF voltage at the moment of power-on or power-off, and the peak value of this voltage is much larger than that of the inverter, it is easy to cause instantaneous overload of the inverter and affect the service life.

If the power quality requirements are not very high, the modified sine wave inverter can still meet the needs of most electrical equipment. However, the modified sine wave inverter has 20% harmonic distortion, so there are still some problems in the operation of precision equipment, which will cause high frequency interference to communication equipment. But the modified sine wave inverter is amuch cheaper pure sine wave inverter.

If you have any requirements or any kind of query regarding the Solar Inverters for your applications, feel free to communicate with our dedicated team at any time at marketing@everexceed.com.