EVM430-F6736: How to measure THD and eliminate individual harmonic

Hello,

Urooj Sultan said:

Is this meter can calculate the THD (total harmonic distortion.

Yes, this reference design can calculate Total Harmonic Distortion (THD). This design uses our MSP430F6736A device which is similar to our MSP430F6779A-based Total Harmonic Distortion Measurement For Energy Monitoring Reference Design. You would need to port this code from F6779A to F6736A.

Urooj Sultan said:

And  is this meter can eliminate the  harmomics that is calculated . if not how can we add an additonal system to eliminate that harmonics espacially 3rd harmonic . 

If you mean filter the harmonic in software, you could probably add a filter to do that. If you mean filter in hardware, you could add an external band-pass filter to allow a certain range of input frequencies. In the Total Harmonic Distortion Measurement For Energy Monitoring Reference Design, this only calculates the THD, not individual harmonics. You'd need to do a FFT on something like the Low Energy Accelerator (LEA) module on our MSP430FR5994 device.

Regards,

James

Thankyou so much sir for your concern . Actually i am going to make a project in which i have asked to make a single phase power analyzer which can not only calculate the THD but also can eliminate 3rd harmonic . for this we have to add an harmonic eliminator separate from meter  and to attach it with meter after calculating THD,  so we will make sure  our teachers that we are atleast removing this 3rd harmonic . Now what are your suggestion regarding this ??