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Jun 3, 2021 at 3:49 comment added Sadat Rafi Yeah. I understood that it will work for pure sin wave. I saw in an application note of NXP that the voltage, current and phase is measured from the DFT sequence.
Jun 2, 2021 at 7:29 comment added alejnavab The concept of reactive power only makes sense in steady-state. If you have changing impedances (what you stated in your question), then you have transient state, and the formula for reactive power is not applicable. Furthermore, the answer by Andy Aka is valid in sinusoidal steady-state (without harmonics), not in non-sinusoidal steady-state (with harmonics); LEDs and other non-LTI (linear time-invariant) devices introduce harmonics.
Nov 30, 2020 at 11:47 comment added Sadat Rafi This question is done too.
Nov 30, 2020 at 11:45 vote accept Sadat Rafi
Nov 30, 2020 at 11:44 comment added Andy aka are you done with this question and answer now?
Jun 13, 2020 at 22:04 history became hot network question
Jun 13, 2020 at 14:12 answer added Andy aka timeline score: 5
Jun 13, 2020 at 14:04 history asked Sadat Rafi CC BY-SA 4.0