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Hi Dear engineers,
Is it true if i say” the only usage of reactive power is generating the flux needed for ferromagnetic circuits such as transformers, motors, ballasts, etc” ? I hope you can help me understand the real meaning of reactive power. :)
Reactive power has no usage because it is a purely mathematical concept.
Ferromagnetic devices are inductive circuits. This means that the current is mostly in quadrature with the voltage. As the Reactive power is the product of the voltage times the quadrature component of the current, (See the post “How to illustrate Reactive Power“) that’s why reactive power is present in these circuits.