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Power Factor

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Hello, I've been looking for a block that measures Power Factor, and I haven't found anything. Is there a block that works for it?
asked Dec 17, 2021 by Alberto Rehbein (21 points)

1 Answer

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Alberto,

The PLECS component library does not include a component to measure power factor.

Assuming you are interested in three-phase systems, attached is a simple model to calculate the power factor that works well for balanced, three-phase systems with low harmonics.  You can find similar calculations for P & Q in the "Microgrid in Island Operation" and "Windpower System with Permanent Magnet Synchronous Generator" demo models.

You should note this is one of many possible implementations of a power measurement block. For example, the calculation could be performed in different reference frames or using sequence decomposition. There also are different possible sign conventions for leading/lagging power. The calculation you ultimately choose should depend on the characteristics of your application, but this should get you started.

Regards,

Bryan
answered Dec 22, 2021 by Bryan Lieblick (908 points)
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