Designing a Three Phase Voltage Source Inverter

Lets discuss about designing a Voltage Source Inverter using IGBT

First let me start by explaining the working concept for voltage source inverter.

Three Phase Voltage source inverters are used where it is required to generate and control a three phase power from a single phase source.For example in remote areas where power is being generated from solar primarily.The three phase power offers more flexibility and efficiency in all applications like watwr pumping ,irrigation etc.

So let us start designing a vsi.

First make a bridge rectifier ,it can be three phase rectifier or single phase rectifier depending upon your requirement then make sure the voltage is more than 290V DC.Then put a series lamp preferrably 200w in series.
Use a 6-IGBT bridge and apply the dc to both the sides of the inverter by shorting one end of the IGBTs.

Now generate the PWM from microcontroller and trigger the igbt by firing pair in a sequence.You will observe three phase at output.It can be used to run motors and all different loads.

I hope this blog will help to get a good understanding of the inverter.

My plan is to launch my own Three Phase VSI by tomorrow ,wish me luck.Watch my youtube videos for more info.