In my last post 'Power Factor Measurement' I used a block to calculated the power factor in case of displaced signals. Today I would like to add some features to that block and be able to calculate the power factor with all kind of signals: with displacement and also distorsion.
Since
Power factor equation |
and
Dispersion term equation |
Distorsion term equation |
The Power Factor Measurement block can be modified to:
The element inside the block are the following:
Inside PF Measurement Block |
Where PF distorsion equation is the one named before and is implemented with the Matlab Function Block and THD block (Block that calculates the Total Harmonic Distorsion of a signal):
>>1/sqrt(1+(u(1)^2))
It is shown that converting a PF Measurement Block for displaced waves to a PF Measurement Block for distorted waves is really easy by using Simulink.
Finally, I would like to show an example of the block:
Example: PF Measurement of distorted signals |
If the output is plotted:
Emaple: V vs I (Distorted waves)* |
With that plot, it can be seen that the diode bridge causes an effect of distorsion of the current and the displacement has disappeared
Notes:
*Notice that current wave has been multiplied in order to be compared with voltage in the plot
How is gain after current block determined.
ReplyDeletecould you reach out to brominhussain118@gmail.com
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