Characteristics of voltage fluctuations induced by household devices and the impact on LED lamps

Gutierrez-Ballesteros, Elena; Rönnberg, Sarah; Gil-de-Castro, Aurora

doi:10.1016/j.ijepes.2022.108158

Cited by 7 publications

(27 citation statements)

References 11 publications

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“…The number of times that the devices are used is indicated in Table I. The minimum and maximum working time for every device is determined by the estimation based on e.g., measurements in [15] and shown in Table I.…”

Section: Use Of Devices In a Householdmentioning

confidence: 99%

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Stochastic Assessment of Risk of Light Flicker in a Household

Gutierrez-Ballesteros,

Rönnberg,

Gil-De-Castro

2023

IEEE Access

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This paper introduces the concept of risk applied to light flicker. It offers a novel stochastic assessment of the risk of light flicker produced by voltage fluctuations from devices in a household. The paper has contributed with stochastic models of voltage fluctuations patterns from several household devices. The voltage fluctuations severity has been determined based on the perception of light flicker from a generalized LED lamp using an index defined as severity factor, what is a novel assessment in contrast to the incandescent lamp considered in the IEC 61000-4-15 standard. The severity factor can be equal to 1, 2 or 3 in increasing order of severity. Each of the severity factors indicates a probability of light flicker equal to or over the perception threshold in a generalized LED lamp and, therefore, a probability of light flicker perceived by an average observer. The severity factor is later used to obtain the risk of light flicker by calculating an index defined as the probabilistic number of voltage fluctuations in a 10-minute interval producing light flicker equal to or over the perception threshold (𝑃 = 1) in a generalized LED lamp. A 𝑃 value is obtained from the risk of light flicker index calculated. The results show a low risk of annoying light flicker due to voltage fluctuations from devices in a household for an average observer.INDEX TERMS Household, LED lamps, light flicker, risk, voltage fluctuations.

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Section: Use Of Devices In a Householdmentioning

confidence: 99%

“…LED lamps have a growing worldwide penetration rate that was 46.5 % in 2019 and expects to reach 75.8 % in 2025 [14]. There is to date not a generic or standard model for LED lamps, each can have a different flicker response to similar voltage fluctuations [15].…”

Section: Introductionmentioning

confidence: 99%

Stochastic Assessment of Risk of Light Flicker in a Household

Gutierrez-Ballesteros,

Rönnberg,

Gil-De-Castro

2023

IEEE Access

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“…SaIs can also occur in an inverter output voltage because of voltage fluctuations in the DC link [6,13,23]. In fact, cyclic voltage fluctuations [7,[24][25][26] are a superposition of the fundamental voltage component and SaIs [7,27,28].…”

Section: Introductionmentioning

confidence: 99%

“…Subharmonics and, interconnected with them, voltage fluctuations cause various noxious phenomena in transformers, light sources, control systems, and power electronic and measurement equipment [4,7,16,24,27,29,30]. Especially sensitive to subharmonics is rotating machinery (based on [5,14,23,27,[31][32][33][34][35][36][37][38][39]).…”

Section: Introductionmentioning

confidence: 99%

“…Subharmonics have been reported to cause excessive transverse and torsional vibrations, increases in power losses and windings temperatures, local saturations of magnetic circuits, and speed fluctuations. Particularly high levels of vibration, even leading to drivetrain destruction [12,18], occur under a resonance condition [5,12,18,24,27,33,34]. The most exposed to harmful torsional vibration are drivetrains containing large synchronous generators and motors (based on [10,14]).…”

Section: Introductionmentioning

confidence: 99%

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Line-Start Permanent Magnet Synchronous Motor Supplied with Voltage Containing Negative-Sequence Subharmonics

Gnaciński,

Pepliński,

Muc

et al. 2023

Energies

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In some power systems, the voltage waveform contains frequency components less than fundamental, called subharmonics or subsynchronous interharmonics. Voltage subharmonics can be both positive- and negative-sequence, independent of their frequency (order). Subharmonics exert harmful effects on sundry electrical equipment, especially on rotating machinery; they cause various noxious phenomena, such as a local saturation of the magnetic circuit, increases in power losses and windings temperature, and torque pulsations leading to vibration of unacceptable severity. Notably, previous works reported excessive vibration of rotating machinery only under no-load, while under full load, rather moderate vibration occurred. This study deals with vibration analysis of a line-start permanent magnet synchronous motor (LSPMSM) supplied with the voltage containing negative-sentence subharmonics. Experimental investigations were conducted for a 3 kW, four-pole production LSPMSM for subharmonics of various values and frequencies. Voltage subharmonics of values significantly less than reported in real power systems were found to cause unacceptable vibration, especially under full load.

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Power Quality

Bollen¹,

Oliveira²

2023

Wiley Encyclopedia of Electrical and Electronics Engineering

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This item starts with a general discussion on power quality, including definitions, terminology, and requirements. It further contains sections on the importance of power quality (which in the end all comes down to reducing the likelihood of interference, i.e., equipment not functioning as it should); some of the subjects that have been historically on the agenda within power quality (going back to harmonics and light flicker, which were on the agenda before the term power quality in its modern meaning was used, voltage dips, and several waves of interest for waveform distortion); the main aspects of power quality monitoring (different for variations and events); the most important power quality disturbances (voltage magnitude variations, fast voltage variations, voltage dips, voltage swells, interruptions, harmonics, interharmonics, supraharmonics, and transients) and an overview of power quality regulation (discussed around the regulatory dilemma).

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Characteristics of voltage fluctuations induced by household devices and the impact on LED lamps

Cited by 7 publications

References 11 publications

Stochastic Assessment of Risk of Light Flicker in a Household

Stochastic Assessment of Risk of Light Flicker in a Household

Line-Start Permanent Magnet Synchronous Motor Supplied with Voltage Containing Negative-Sequence Subharmonics

Power Quality

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