Journal article
A Self-Oscillating Control Scheme for a Boost Converter Providing a Controlled Output Current
Most switched mode power supplies provide a regulated voltage at their output. However, there are applications requiring a controlled current. Among others are battery chargers, test equipment for converters driven by solar cells, and LED drivers. This paper describes a dc–dc power converter realizing such a current source.
The converter is based on a boost converter, supplied by a voltage source and acting as a current source. The boost converter can increase the output voltage above the input voltage. The converter provides a high control bandwidth based on a self-oscillating current loop. As additional practical features, soft start and output overvoltage limitation are included and described in this paper.
The modulator, the control, and the power stage are described in detail and verified by the experiment.
Language: | English |
---|---|
Publisher: | IEEE |
Year: | 2011 |
Pages: | 2707-2723 |
ISSN: | 19410107 and 08858993 |
Types: | Journal article |
DOI: | 10.1109/TPEL.2011.2126600 |
ORCIDs: | Knott, Arnold and Andersen, Michael A. E. |
Battery chargers Current control Current supplies Dc–dc power conversion Pulse width modulated power converters Solar energy
Batteries Converters DC-DC power convertors Equations Modulation Switches Switching frequency Voltage control boost converter controlled output current current control current source current supplies dc-dc power converter dc–dc power conversion electric current control high control bandwidth pulse width modulated power converters self-oscillating control scheme self-oscillating current loop solar energy switched mode power supplies voltage source