FEEDBACK IN SINE WAVE INVERTER USING PIC16F887.

[T.A]

Thanks for your replies.
I have rearranged and modified the code.
The feedback is working properly but there is an issue.
Any time i load it small load like table lamp, small fan , the output wave and voltage is good, but when i use larger loads, like soldering iron, laptop, the output voltage becomes attenuated and distorted. what can I do ?

 

[T.A]

This is the regulated output wave form.

 

[Ian Rogers]

Sounds like overloading... If you have designed the hardware to give an output of 1KW... Thats only 4 amp..

Your laptop will require 3~4a at 220vac.... How much DC are you using? If you have designed the inverter for 1KW then the inverter is too small or is inefficient.. Most inverters have to run around 85%+ to be of any use..

Is your drivers getting very hot when under load?

 

[T.A]

i used a 3KVA transformer i.e the design is a 3KVA design, a battery of 12V, 200AH.
The drivers are cool. not getting hot.

 

[deeksha30]

Can you post the modified code here?

 

[Ian Rogers]

Roman blacks web site..
https://www.romanblack.com/onesec/Sine1kHz.htm