How to Distinguish High Frequency Inverter and Low Frequency Inverter？

Inverters come in many different shapes and sizes. There are two main contrasting characteristics between different types of inverters:

• The type of power output, categorized by which sine wave it uses – modified or pure sine wave.

• What internal frequency the inverter circuits operate at.

The topic today is going to talk about the high frequency inverter and low frequency inverter. The main difference between high frequency inverter and low frequency inverters is the frequency of the AC power produced. High frequency inverters produce AC power of a higher frequency and voltage level, while low frequency inverters produce AC power of a lower frequency and voltage. 

How high frequency inverter works?

High frequency inverter uses a technique of converting the direct current into alternating current. It involves rapidly switching the DC power on and off at a predefined frequency(200KHz or higher), creating a waveform that is AC rather than DC. This waveform is then filtered to remove any noise or distortion, and the resulting AC power is then used to power a device or supply energy to the power grid.

How low frequency inverter works?

Low frequency inverter technique is similar to high frequency inverter technique, but produces AC power of a lower frequency and voltage level. Low frequency inverters use pulse width modulation (PWM) to convert direct current (DC) into alternating current (AC). However, the frequency of the PWM is lower than that of a high frequency inverter, resulting in a lower frequency and voltage output.

This type of inverter is typically used for powering small devices, such as electric motors, pumps, and fans.

Comparison between low frequency VS high frequency 

• Low-frequency inverters are designed to deal with higher power spikes for longer periods of time than high-frequency inverters. 

• Low-frequency inverters operate using powerful transformers, which are more reliable and sturdy than the high-frequency inverter's.

• Low frequency inverters produce less electromagnetic interference, but can only produce lower AC power frequencies, while high frequency inverters can produce higher frequencies.

• High frequency inverters typically less expensive, have smaller footprints, and have a lower tolerance for industrial loads.

• The high frequency inverter can deliver the same power at higher frequency with a much smaller and lighter transformer, as a result, the HF inverter is often called transformer-less inverter, or TL inverter.

• With its smaller transformer, high frequency inverters typically surge at a lower rate.

           You can find more information high frequency and low frequency here:  SVC Solar Inverter