Is it possible to measure power factor using the ADE71XX/51XX IC?
It is possible to calculate the power factor from the energy readings, though it cannot be measured directly from the ADE71XX/51XX IC. The power factor is obtained by dividing the active power by the apparent power.
The energy calculations are done within the chip through line cycle accumulation mode, if it is enabled by the user. The line cycle accumulation mode accumulates the power over a fixed time and synchronizes that with the zero-crossing of the voltage signals. In this way, power is accumulated in half line cycles for a specific amount of time, which varies from one ADE IC to another.
Please also note that some of the recent ICs including ADE7880 and ADE7953 have an option to measure the Power Factor directly.
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