Avoiding high inrush current peaks for reducing conducted emission

Felix Müllner; Ernst Bodenstorfer; Stefan Cecil; Andrea Hofer

Avoiding high inrush current peaks for reducing conducted emission

Felix Müllner
, Ernst Bodenstorfer
, Stefan Cecil
, Andrea Hofer

Research output: Chapter in Book or Conference Proceedings › Conference Proceedings with Poster Presentation

41 Downloads (Pure)

Abstract

The Competence Unit High-Performance Vision Systems at the AIT Austrian Institute of Technology is developing a 3D scan system including photometric stereo imaging. This system requires special light sources, which are driven with up to 20 A current pulses, to illuminate the object from different angles.
Corresponding high current levels are required for 300 μs during a period of 10 ms, which are leading to high inrush current peaks at conventional LED drivers. These current peaks often lead to problems in the conducted emission spectrum, which requires well matched electromagnetic inference (EMI) filters on the input side of the LED controller.
During a master thesis conducted at the AIT, a LED controller was developed, which buffers the energy required for high current pulses. The poster is presenting some significant improvements in the conducted emission spectrum, caused by the circuit concept of this LED controller.

Translated title of the contribution	Vermeidung hoher Einschaltstromspitzen zur Reduzierung leitungsgebundener Emissionen
Original language	English
Title of host publication	20. EMV-Fachtagung
Volume	110
Publication status	Published - 27 Sept 2023
Event	20. EMV-Fachtagung - Seibersdorf Labor GmbH, Seibersdorf, Austria Duration: 27 Sept 2023 → 28 Sept 2023

Conference

Conference	20. EMV-Fachtagung
Country/Territory	Austria
City	Seibersdorf
Period	27/09/23 → 28/09/23

Research Field

High-Performance Vision Systems

Keywords

LED-Controller
inrush current peaks
conducted emission
EMC
energy buffer

Access to Document

Poster_LED-Controller_AIT_FinalOther version, 314 KB

1 Master's Thesis

LED-Controller for Inline Computational Imaging
Müllner, F., 2022
Research output: Thesis › Master's Thesis

Cite this

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title = "Avoiding high inrush current peaks for reducing conducted emission",

abstract = "The Competence Unit High-Performance Vision Systems at the AIT Austrian Institute of Technology is developing a 3D scan system including photometric stereo imaging. This system requires special light sources, which are driven with up to 20 A current pulses, to illuminate the object from different angles. Corresponding high current levels are required for 300 μs during a period of 10 ms, which are leading to high inrush current peaks at conventional LED drivers. These current peaks often lead to problems in the conducted emission spectrum, which requires well matched electromagnetic inference (EMI) filters on the input side of the LED controller. During a master thesis conducted at the AIT, a LED controller was developed, which buffers the energy required for high current pulses. The poster is presenting some significant improvements in the conducted emission spectrum, caused by the circuit concept of this LED controller. ",

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author = "Felix M{\"u}llner and Ernst Bodenstorfer and Stefan Cecil and Andrea Hofer",

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language = "English",

isbn = "978-3-903249-22-6",

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T1 - Avoiding high inrush current peaks for reducing conducted emission

AU - Müllner, Felix

AU - Bodenstorfer, Ernst

AU - Cecil, Stefan

AU - Hofer, Andrea

PY - 2023/9/27

Y1 - 2023/9/27

N2 - The Competence Unit High-Performance Vision Systems at the AIT Austrian Institute of Technology is developing a 3D scan system including photometric stereo imaging. This system requires special light sources, which are driven with up to 20 A current pulses, to illuminate the object from different angles. Corresponding high current levels are required for 300 μs during a period of 10 ms, which are leading to high inrush current peaks at conventional LED drivers. These current peaks often lead to problems in the conducted emission spectrum, which requires well matched electromagnetic inference (EMI) filters on the input side of the LED controller. During a master thesis conducted at the AIT, a LED controller was developed, which buffers the energy required for high current pulses. The poster is presenting some significant improvements in the conducted emission spectrum, caused by the circuit concept of this LED controller.

AB - The Competence Unit High-Performance Vision Systems at the AIT Austrian Institute of Technology is developing a 3D scan system including photometric stereo imaging. This system requires special light sources, which are driven with up to 20 A current pulses, to illuminate the object from different angles. Corresponding high current levels are required for 300 μs during a period of 10 ms, which are leading to high inrush current peaks at conventional LED drivers. These current peaks often lead to problems in the conducted emission spectrum, which requires well matched electromagnetic inference (EMI) filters on the input side of the LED controller. During a master thesis conducted at the AIT, a LED controller was developed, which buffers the energy required for high current pulses. The poster is presenting some significant improvements in the conducted emission spectrum, caused by the circuit concept of this LED controller.

KW - LED-Controller

KW - inrush current peaks

KW - conducted emission

KW - EMC

KW - energy buffer

M3 - Conference Proceedings with Poster Presentation

SN - 978-3-903249-22-6

VL - 110

BT - 20. EMV-Fachtagung

T2 - 20. EMV-Fachtagung

Y2 - 27 September 2023 through 28 September 2023

ER -

Avoiding high inrush current peaks for reducing conducted emission

Abstract

Conference

Research Field

Keywords

Access to Document

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Research output

LED-Controller for Inline Computational Imaging

Cite this