Modelling and Control of Class-D Power Amplifiers for Vented-Box Loudspeaker Systems

Figueres E, Garcera G, Gonzalez-Espin F, Sandia J. Modelling and Control of Class-D Power Amplifiers for Vented-Box Loudspeaker Systems. In: AES Conference: 31st International Conference: New Directions in High Resolution Audio. Audio Engineering Society; 2007. Paper 5. Available from: https://aes.org/publications/elibrary-page/?id=13970

@inproceedings{Figueres2007_13970,
  author = {Figueres, Emilio and Garcera, Gabriel and Gonzalez-Espin, Fran and Sandia, Jesus},
  title = {{Modelling and Control of Class-D Power Amplifiers for Vented-Box Loudspeaker Systems}},
  booktitle = {AES Conference: 31st International Conference: New Directions in High Resolution Audio},
  note = {Paper 5},
  year = {2007},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13970}
}

TY  - CPAPER
TI  - Modelling and Control of Class-D Power Amplifiers for Vented-Box Loudspeaker Systems
AU  - Figueres, Emilio
AU  - Garcera, Gabriel
AU  - Gonzalez-Espin, Fran
AU  - Sandia, Jesus
T2  - AES Conference: 31st International Conference: New Directions in High Resolution Audio
M1  - Paper 5
PY  - 2007
DA  - 2007/06/06
UR  - https://aes.org/publications/elibrary-page/?id=13970
PB  - Audio Engineering Society
LA  - en
AB  - The purpose of this paper is to analyze the stability of closed loop switching power amplifiers using an accurate model of a loudspeaker installed in a commonly used bass reflex enclosure instead of the purely resistive model that can be used with a Zobel network. The model takes into account the electrical-mechanical-acoustical parameters of the transducer as well as the voice-coil loudspeaker’s non-linear behavior, avoiding stability problems when trying to compensate for the output filter stage, thus obtaining better THD figures. This model has been experimentally tested and then used to design a regulator for Voltage-Mode Control method by means of MATLAB software. The regulator has been simulated using a full-bridge power converter along with the proposed model of the transducer.
ER  -