modified sine wave control using pic16f876a

MODIFIED SINE WAVE INVERTER CONTROL USING PIC16F876A

 

Control and Monitoring of an inverter during operation has being the major problem which locally made inverters Manufacturer encounters which has led to low demand for locally built Inverters due to sudden break down as a result of overcharging of the batteries, overuse of the battery below the low battery spec. and high voltage during charging. most of the Inverter schematic claimed or used by Local Inverter Manufacturer downloaded from the internet are for tutorial purpose not not for commercial there are tendencies for failure therefore it is time for us to start developing things of our own...
proudly NIGERIA......
The featuring M.C.U is the Microchip PIC16F876A
FEATURES INCLUDES:

INVERTER PROTECTION : LOW-BATTERY SHUTDOWN
                                             : OVER LOAD SHUTDOWN INPUT
                                             : OUTPUT SHORT CIRCUIT SHUT-DOWN
                                             : HIGH TEMPERATURE SHUT-DOWN
                                             : LOW-BATTERY : BEEP START AT 11 V
                                             :LOW BATTERY INVERTER SHUT DOWN AT 10.5 V
                                             :10 SEC DELAY BEFORE CHARGING
                                             : AUTOMATIC VOLTAGE REGULATOR
                                               [INPUT: 160 V - 250 V]
                                               [OUTPUT: 211 V - 232 V]

                                             : HIGH VOLTAGE PROTECTION
                     
INVERTER  MONITOR  : 16*2 LCD DISPLAY
                                         : ERROR LED
                                         : BUZZER

The  pic16f876a is programmed with picbasic pro software and the board components can easily arranged and tested by any electronic personnel.

Below are the schematics:

FIG1: PROTEUS SIMULATION1

FIG2: PROTEUS SIMULATION 2

FIG3: PROTEUS SIMULATION 3

FIG4: PROTEUS SIMULATION 4

FIG5: SCHEMATIC DIAGRAM

FIG6: CHARGING SIMULATION

FIG7: INPUT VOLTAGE SIMULATION

FOR TUTORIAL AND HELP OR PURCHASE OF THE PANEL BOARD {EMPTY OR COMPLETE}
CONTACTS: 08138110639 OR 07018399701
EMAIL: JVERTECHELECT@GMAIL.COM,
YOU CAN MAIL ME FOR THE HEX FILE AND THE CIRCUIT DIAGRAM