Three-level cell topology for a multilevel power supply to achieve High
| Autor: | Díaz López, Daniel, Vasic, Miroslav, García Suárez, Oscar, Oliver Ramírez, Jesús Angel, Alou Cervera, Pedro, Prieto López, Roberto, Cobos Márquez, José Antonio |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers, ISSN 1549-8328, 2012-09, Vol. 59, No. 9 Archivo Digital UPM instname |
| Popis: | This paper presents an envelope amplifier solution for envelope elimination and restoration (EER), that consists of a series combination of a switch-mode power supply (SMPS), based on three-level voltage cells and a linear regulator. This cell topology offers several advantages over a previously presented envelope amplifier based on a different multilevel topology (two-level voltage cells). The topology of the multilevel converter affects to the whole design of the envelope amplifier and a comparison between both design alternatives regarding the size, complexity and the efficiency of the solution is done. Both envelope amplifier solutions have a bandwidth of 2 MHz with an instantaneous maximum power of 50 W. It is also analyzed the linearity of the three-level cell solution, with critical importance in the EER technique implementation. Additionally, considerations to optimize the design of the envelope amplifier and experimental comparison between both cell topologies are included. |
| Databáze: | OpenAIRE |
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