Archivio Istituzionale della RicercaA modified class-G linear amplifier has been developed to improve the overall efficiency of a transconductance amplifier loaded with the high inductance and low resistance typical of the magnetic bearing coils. A simple theoretical characterization has been used to provide some diagrams to optimize the power efficiency as a function of a nonconstant load such as that due to a rotor unbalance. Experimental results are reported that show a more than satisfactory agreement with the expected results and the developed theory.
High-efficiency linear power amplifier for active magnetic bearings / Carabelli, Stefano; Maddaleno, Franco; Muzzarelli, Marco. - In: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS. - ISSN 0278-0046. - 47:1(2000), pp. 17-24. [10.1109/41.824021]
High-efficiency linear power amplifier for active magnetic bearings
CARABELLI, Stefano;MADDALENO, FRANCO;MUZZARELLI, Marco
2000
Abstract
A modified class-G linear amplifier has been developed to improve the overall efficiency of a transconductance amplifier loaded with the high inductance and low resistance typical of the magnetic bearing coils. A simple theoretical characterization has been used to provide some diagrams to optimize the power efficiency as a function of a nonconstant load such as that due to a rotor unbalance. Experimental results are reported that show a more than satisfactory agreement with the expected results and the developed theory.
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https://hdl.handle.net/11583/1398526
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