Power balance (Steady State AC Magnetic application)
Introduction
In Steady state AC magnetic application, the computed physical quantities vary sinusoidally with time (at a given frequency). They are expressed by means of complex images.
The power balance allows the access to the powers dissipated by the system.
Subsystems definition: reminder
The system comprises one or more subsystems like the one presented in the figure below.
Computation / results
The values calculated for each of the subsystems and for the period T=1/f:
 the dissipated powers (mean values over a T period)
Dissipated powers
For the dissipated powers, a summary of the computed quantities is presented in the table below.
Subsystem 
Losses (instantaneous) (in W) 

Internal 

Electrical 
Losses by the Joule effect (resistive components): , with S defined by: (with U and I peak) 