PIC16F876A Based A.V.R ( VOLTAGE STABILIZER )

I have be thinking about a pic microcontroler based voltage regulator for about 3 years now; last week i install a 2.5kva 36V inverter for a consumer of mine... 3 days later he called me that the inverter is not charging the battery well... so i ask him to call me and check the input voltage on the lcd screen when ever their is a mains supply (NEPA).... so he called  confirming that the input voltage was 108volt; we had to design a  2kva automatic voltage regulator from 80V - 260V...

Features:
Low voltage protection
High voltage protection
Delay function
Calibration mode
Delay indicator
High/low voltage indicator

4 Relays voltage stabilizer

 

 ON 187V INPUT TEST ON PROTEUS

 ON 218V INPUT TEST ON PROTEUS 

 

 ON 262V INPUT TEST ON PROTEUS WITH HIGH VOLT GUIDE 

 

RELAY CONFIGURATION

 

TRANSFORMER CONFIGURATION

 

A

 

B

 

 

  

Repair of 2kva AVR

Old board

New board

TEST1

READY

Source code available : https://www.4shared.com/office/WI6QtC7tgm/AVR_CODE.html