TY - GEN
T1 - Design and comparison of high frequency transformers using foil and round windings
AU - Iyer, Kartik V.
AU - Robbins, William P
AU - Mohan, Ned
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - High frequency transformers are widely used in Switched-mode power supplies and now are being proposed to be used with power electronic converters to replace line-frequency transformers. This paper presents a winding design procedure for minimizing the power losses using foils and solid round wires under sinusoidal excitation to limit the temperature rise. This paper derives the range from which the thickness of the layers can be chosen to obtain the minimum power loss. This thickness range is a function of the number of layers and does not include the 'optimum'based on the previous literature. Using this design procedure, it is shown that interleaving is not necessary in foil-wound transformers to obtain the minimum loss. A comparison of winding losses between foil windings and round conductors is also given. The analytical results are verified by designing six different winding configurations for the same specifications using 2-D Ansys Maxwell finite element design package.
AB - High frequency transformers are widely used in Switched-mode power supplies and now are being proposed to be used with power electronic converters to replace line-frequency transformers. This paper presents a winding design procedure for minimizing the power losses using foils and solid round wires under sinusoidal excitation to limit the temperature rise. This paper derives the range from which the thickness of the layers can be chosen to obtain the minimum power loss. This thickness range is a function of the number of layers and does not include the 'optimum'based on the previous literature. Using this design procedure, it is shown that interleaving is not necessary in foil-wound transformers to obtain the minimum loss. A comparison of winding losses between foil windings and round conductors is also given. The analytical results are verified by designing six different winding configurations for the same specifications using 2-D Ansys Maxwell finite element design package.
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U2 - 10.1109/IPEC.2014.6870117
DO - 10.1109/IPEC.2014.6870117
M3 - Conference contribution
AN - SCOPUS:84906691728
SN - 9781479927050
T3 - 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
SP - 3037
EP - 3043
BT - 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
PB - IEEE Computer Society
T2 - 7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
Y2 - 18 May 2014 through 21 May 2014
ER -