Investigation of LED Lighting Performance in the Presence of Ripple Injection Load Control Signals
Abstract
This paper presents the outcomes of laboratory testing on a sample of LED lamp/driver and dimmer combinations in presence of Audio Frequency Injection Control (AFIC) signals used by network operators for control of certain loads. In order to determine contributing factors in the signal that may have an effect on the performance of the LEDs, a flicker evaluation testing system has been developed to investigate flicker issues associated with LEDs under controlled conditions. The main objective is to use light based flicker indices to identify the effect on different lighting combinations by varying the voltage magnitude, frequency of the AFIC signal and the position of the dimmer. Visual observations were also carried out to ensure that results obtained from the testing are correlated with what was observed visually. The test results have been analyzed in terms of types of technologies used in LED lamp/driver and the variables in the AFIC signal, and analytical results are reported in the paper.
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AFIC signalling is implemented by injecting high-frequency voltage signals onto the 50 Hz supply, which can be detected by relays, allowing certain loads to be controlled remotely.
“AFIC signalling is implemented by injecting high-frequency voltage signals onto the 50 Hz supply, which can be detected by relays, allowing certain loads to be controlled remotely.”
From Voltage Regulation in Rooftop PV-Rich Distribution Networks: A Review and Detailed Case Study (2026) · cites this paper as [45]
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Voltage Regulation in Rooftop PV-Rich Distribution Networks: A Review and Detailed Case Study
Rahman, O., Elphick, S., & Robinson, D. A. (2026) · Electronics · doi:10.3390/electronics15051074 · Cited by 3 · see citing works
Self-citation
- Authors
- Rahman, O., Elphick, S., Muttaqi, K. M., & David, J.
- Affiliations
- University of Wollongong (AU)
- Venue
- 2018 IEEE Industry Applications Society Annual Meeting (IAS)
- Publisher
- IEEE
- Published
- 2018-09
- Pages
- 1-7
- ISSN
- 0197-2618 (ISSN-L)
- OpenAlex
- W2902474817
- Cited by
- 4
- References
- 0
- Citations by year
- 2026: 1 · 2025: 1 · 2020: 1 · 2019: 1
- FWCI
- 0.80
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- IEEE Industry Applications Society Annual Meeting (IAS) (publishedVersion)
- Research Online (University of Wollongong) (submittedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Power Quality and Harmonics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Power Line Communications and Noise
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Smart Grid Energy Management
- Keywords
- LED lighting, flicker, LED driver, dimmers, lighting performance, voltage magnitude, signal frequency
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