[PIC] Power factor measurement logic & program using PIC 16F877A

Status
Not open for further replies.
S

Shreedhar Bhat

Newbie level 6
Joined
Mar 17, 2014
Messages
11
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Visit site
Activity points
68
I need a help.. Power factor measurement logic & program using PIC 16F877A..

My project is to automatic power factor controller,
My approach is to find out the zero crossing of both Current and Voltage,
find out the time difference and then calculate the angle..

Please elaborate this logic step by step..
*How to calculate angle using time difference?
& help me for coding..


Thank you..
 


Re: Power factor measurement logic & program using PIC 16F877A

milan.rajik said:
Where is your code?
Click to expand...

Flowcode..

- - - Updated - - -

How to measure phase difference between Voltage & current using pic 16F877A.?
Please help me..

Thank you..
 

I highly recommend you to change your idea about measuring the PF. the zero crossing detection and phase calculating is not appropriate for non-linear consumers. for example if you want to calculate a switching power supply PF, you cant do it because the current shape in not a sine wave and your measurement will be incorrect.
the best way is to calculate apparent and effective power and calculate PF by dividing them.
that's the thing I did in the same project in my company.
 

Flowcode PIC doesn't have trigonometric functions. You have to implement it.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…