Power-Balanced Modeling of Nonlinear Coils and Transformers for Audio Circuits - Archive ouverte HAL
Article Dans Une Revue AES - Journal of the Audio Engineering Society Audio-Accoustics-Application Année : 2021

Power-Balanced Modeling of Nonlinear Coils and Transformers for Audio Circuits

Résumé

This paper is concerned with the modeling of ferromagnetic coils with audio applications in mind. The proposed approach derives a macroscopic, energy-based formulation from statistical physics. This choice allows for thermodynamic variables to be explicitly taken into account. As a consequence, macroscopic features such as saturation and hysteresis arise directly. As the proposed model is expressed through a port-Hamiltonian formulation, power balance and passivity are guaranteed. Moreover the model may be straightforwardly connected to other multi-physical components and included in more complex systems. The proposed model is compared to measurements on a real ferromagnetic coil. Simulations of a passive band-pass filter and a transformer built around the model are presented as an illustration.
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Dates et versions

hal-03327510 , version 1 (27-08-2021)

Identifiants

Citer

Judy Najnudel, Thomas Hélie, David Roze, Rémy Muller. Power-Balanced Modeling of Nonlinear Coils and Transformers for Audio Circuits. AES - Journal of the Audio Engineering Society Audio-Accoustics-Application, 2021, 69 (7/8), pp.506-516. ⟨10.17743/jaes.2021.0022⟩. ⟨hal-03327510⟩
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