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The **AC Conduction** module can be used to analyze electric field caused by time-harmonic voltages and currents on the region boundaries. The dielectric media is assumed to be non-ideal with a small but non-zero electric conductivity. Generally the quantities of interest in **AC Conduction** analysis are voltages, active and reactive currents, electric fields, Joule losses, capacitances, and electric forces. The **AC Conduction** analysis module complements other types of electrical field analysis, available in QuickField - Electrostatic and DC Conduction, taking into account both resistive and capacitive effects.

The **AC Conduction** module can be used to design and analyze variety of conductive systems such as capacitors, insulation systems cables, and in other technical applications.

**Features of the AC Conduction module:**

- Anisotropic conductivity
- Anisotropic permittivity
- Voltage and current density sources
- Dirichlet or Neumann boundary conditions
- Results: voltages, electric fields, conductive and reactive (displacement) current densities, flux densities (electric displacements), Joule losses, self and mutual capacitances, forces, torques, and electric energy
- Couplings: power losses can be used as heat sources (Joule heating) for thermal analysis (electro-thermal coupling). Electric forces can be used for stress analysis (electro-structural coupling)

**See examples of AC Conduction problems**:

Plane capacitor

Cylindrical capacitor

Slot insulation