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Títol: An enhanced switching policy for buck-derived multi-level switching power amplifiers
Autor: García Tormo, Albert
Poveda López, Alberto
Alarcón Cot, Eduardo José
Bergveld, Henk Jan
Buter, Berry
Karadi, Ravi
Altres autors/autores: Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
Matèries: Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Electrònica de potència
Switching converters
PWM power converters
Power amplifiers
Amplificadors de potència
Convertidors commutats
Tipus de document: Conference report
Descripció: This work proposes a switching policy for multi-level fullbridge switching power converters and analyses their performance by driving them with a multi-level PWM modulation, targeting highefficiency power amplifiers. Unlike conventional policies, which generate the output voltage levels only from the values of the supply voltages, this enhanced policy also uses the values of the voltage difference between supply voltages to generate additional output voltage levels, therefore maximising the number of output voltage levels for a given set of supply voltages and connection switches. Simulation results show that, when tracking a band-limited signal, the proposed switching policy can reduce the power of the high-frequency spectral content from 21% to 11% by upgrading a 5-level amplifier to a 7-level amplifier without adding supply voltages or connection switches.
Altres identificadors i accés: Garcia, A. [et al.]. An enhanced switching policy for buck-derived multi-level switching power amplifiers. A: IEEE International Symposium on Circuits and Systems. "2010 IEEE International Symposium on Circuits and Systems". París: 2010, p. 3196-3199.
Disponible al dipòsit:E-prints UPC

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