any one can find power factor for AC load using 8051 microcontroller

[jeyakumar]

how to find powerfactor for an AC load….measuring instruments…..

[nikhiljain]

Hey can you tell more about the concept of finding the power factor. I think you will have to use a step down transformer followed by an ADC and microcontroller to calculate the pf.

[Paramasivan]

To find Power factor, you should first conver the sine wave into square wave. Take voltage and current referances from PT and CT. Then convert it into square wave. You can calculate the time difference between two waves by turning ON the timmer when voltage pulse goes to high and stop timmer when current pulse goes high. The time difference give you the powerfactor data.

[jeyakumar]

but some problem to fetch timer data and multiply with constant.

 

[Sreeram]

HI, 

        I just started working to make a power factor measuring meter using a microcontroller. Really in confusion where to start. If you can give any help, any advice, any material or details of the hardware required to impllement the power factor meter it will be a great help

 

Sreeram

[Author]

Posts