Single Phase Inverter

An inverter refers to a power electronic device that converts power in DC form to AC form at the required frequency and voltage output.

Inverters are classified into two main categories −

Voltage Source Inverter (VSI ) − The voltage source inverter has stiff DC source voltage that is the DC voltage has limited or zero impedance at the inverter input terminals.

Current Source Inverter ( CSI) − A current source inverter is supplied with a variable current from a DC source that has high impedance. The resulting current waves are not influenced by the load.

Single Phase Inverter

There are two types of single phase inverters − full bridge inverter and half bridge inverter.

Half Bridge Inverter

This type of inverter is the basic building block of a full bridge inverter. It contains two switches and each of its capacitors has a voltage output equal to Vdc2Vdc2. In addition, the switches complement each other, that is, if one is switched ON the other one goes OFF.

Full Bridge Inverter

This inverter circuit converts DC to AC. It achieves this by closing and opening the switches in the right sequence. It has four different operating states which are based on which switches are closed

                                    

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