Analysis, Design, and Experimentation on Constant-Frequency DC-DC Resonant Converters With Magnetic Control

In this paper, a new technique for controlling dc-dc resonant converters is investigated. A variable inductance is used to control and regulate the dc output voltage maintaining constant switching frequency for the half-bridge transistors. The output voltage characteristics of the series resonant an...

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Veröffentlicht in:IEEE transactions on power electronics 2012-03, Vol.27 (3), p.1369-1382
Hauptverfasser: Alonso, J. Marcos, Perdigão, Marina S., Vaquero, David Gacio, Calleja, Antonio J., Saraiva, Eduardo Sousa
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container_end_page 1382
container_issue 3
container_start_page 1369
container_title IEEE transactions on power electronics
container_volume 27
creator Alonso, J. Marcos
Perdigão, Marina S.
Vaquero, David Gacio
Calleja, Antonio J.
Saraiva, Eduardo Sousa
description In this paper, a new technique for controlling dc-dc resonant converters is investigated. A variable inductance is used to control and regulate the dc output voltage maintaining constant switching frequency for the half-bridge transistors. The output voltage characteristics of the series resonant and parallel resonant converters under the proposed magnetic control are obtained and analyzed. In order to evaluate the proposed technique, a laboratory prototype for a 48 V-input 5 V/10 A-output 500 kHz parallel resonant converter is presented. A methodology for obtaining the converter dynamic response using a step response test is carried out. From the dynamic response, a compensator for operating the converter at closed loop is developed and tested in the laboratory. The results prove that the proposed technique is suitable for controling resonant inverters at constant frequency using a low-cost half-bridge inverter.
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source IEEE Electronic Library (IEL)
subjects Applied sciences
Circuit properties
Closed loop operation
constant switching frequency
Convertors
dc-dc converters
Electric currents
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electrical machines
Electronic circuits
Electronics
Exact sciences and technology
Frequencies
Frequency conversion
Inductance
Laboratories
low EMI
Magnetic circuits
magnetic control
magnetic regulator
Magnetic resonance
Magnetism
Prototypes
Regulation and control
resonant conversion
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal convertors
Transistors
variable inductance
Voltage control
title Analysis, Design, and Experimentation on Constant-Frequency DC-DC Resonant Converters With Magnetic Control
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