Frequency-dependent resistance in Litz-wire planar windings for all-metal domestic induction heating appliances

In this paper the frequency-dependent resistance in Litz-wires planar windings for all-metal domestic induction heating appliances is analyzed. For planar inductors, where size is not an essential constraint, an analytical model is developed based on the superposition of different loss effects in the wire, several inductors were constructed and results with both nonloaded and loaded inductors are compared with theoretical predictions

[1]  Fred C. Lee,et al.  A high frequency model for Litz wire for switch-mode magnetics , 1993, Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting.

[2]  J. Burdío,et al.  Simple resistance calculation in litz-wire planar windings for induction cooking appliances , 2005, IEEE Transactions on Magnetics.

[3]  D. Boroyevich,et al.  Reduction of high-frequency conduction losses using a planar litz structure , 2005, IEEE Transactions on Power Electronics.

[4]  George H. Brown,et al.  Theory and application of radio-frequency heating , 1947 .

[5]  A. Podoltsev,et al.  Analysis of effective resistance and eddy-current losses in multiturn winding of high-frequency magnetic components , 2003 .

[6]  P. Viarouge,et al.  Accurate analytical model of winding losses in round Litz wire windings , 2001 .

[7]  A. Schellmanns,et al.  Modeling Litz wire windings , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[8]  W. G. Hurley,et al.  Calculation of self and mutual impedances in planar magnetic structures , 1995 .

[9]  Charles R. Sullivan.  Cost-constrained selection of strand diameter and number in a Litz-wire transformer winding , 1998 .

[10]  Charles R. Sullivan,et al.  Stranded wire with uninsulated strands as a low-cost alternative to litz wire , 2003, IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03..

[11]  Charles R. Sullivan.  Optimal choice for number of strands in a litz-wire transformer winding , 1997 .

[12]  Charles R. Sullivan,et al.  Computationally efficient winding loss calculation with multiple windings, arbitrary waveforms, and two-dimensional or three-dimensional field geometry , 2001 .

[13]  Francois Costa,et al.  Principle of a multi-load/single converter system for low power induction heating , 2000 .

[14]  J. A. Ferreira.  Electromagnetic Modelling of Power Electronic Converters , 1989 .

[15]  C.R. Sullivan,et al.  Simplified high-accuracy calculation of eddy-current loss in round-wire windings , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).