The Polyphase Power Sensor (or Power Sensor) component has $m$ current sensors and $m$ voltage sensors. The corresponding current and voltage  outputs are polyplied and the sum of products is output as the power.

$P\=\sum _{k\=1}^m{i}_k{v}_k$

$v_k\=v_{p_k}-v_{n_k}$

$i_k\=i_{p_k}\=-i_{n_k}$

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.