High-efficiency ripple-free power converter for nuclear magnetic resonance

Author

Silva, J. Fernando ; Galhardo, A. ; Palma, Joiio

Volume

1

fYear

2000

fDate

2000

Firstpage

384

Abstract

A new power converter topology and control scheme, enabling a ripple free output with high efficiency, is presented. Feedback controllers for the proposed topology are designed taking into account nonideal parameters. Experimental results, presenting almost no ripple, fast dynamics, almost no overshoot, and good tracking performance, demonstrate the merits and justify the cost of the extra amplifier needed in the new converter concept

Keywords

PWM power convertors; control system synthesis; electric current control; feedback; harmonic distortion; harmonics suppression; nuclear magnetic resonance; power amplifiers; power conversion harmonics; two-term control; variable structure systems; amplifier; control performance; control scheme; feedback controller design; nuclear magnetic resonance; ripple free output; ripple-free power converter topology; tracking performance; Circuits; Nuclear magnetic resonance; Power amplifiers; Power semiconductor switches; Power supplies; Pulse width modulation; Pulse width modulation converters; Regulators; Sliding mode control; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual

Conference_Location

Galway

ISSN

0275-9306

Print_ISBN

0-7803-5692-6

Type

conf

DOI

10.1109/PESC.2000.878884

Filename

878884