Title :
Accurate analytical model of winding losses in round Litz wire windings
Author :
Tourkhani, F. ; Viarouge, P.
Author_Institution :
Space & Electron. Group, EMS Technol., Que., Canada
fDate :
1/1/2001 12:00:00 AM
Abstract :
An accurate analytical model of losses in round Litz wire windings is presented. The model is based on the exact analytical equations for round conductors, and it closely includes the distribution of the leakage field across the winding space. A closed-form formula of the ac resistance of round Litz wire windings is developed from the model. An analytic solution of the optimal value of the ac resistance is derived. The expression of the strand dimension corresponding to the optimal value of the ac resistance is also determined
Keywords :
eddy current losses; electric resistance; windings; wires (electric); ac resistance; analytical model; closed-form formula; leakage field; round Litz wire windings; round conductors; strand dimension; winding losses; winding space; Analytical models; Conductors; Eddy currents; Equations; Magnetic analysis; Magnetic losses; Process design; Proximity effect; Transformers; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
