Flicker responses of different lamp types

Cai, Rong; Cobben, Jfg Sjef; Myrzik, J.M.A.; Blom, J.; Kling, WL Wil

doi:10.1049/iet-gtd.2008.0429

Cited by 46 publications

(16 citation statements)

References 7 publications

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“…According to (2), the flicker voltage source contains two frequency components in addition to the fundamental frequency f c : one is at a supersynchronous frequency that can be considered as an upper-sideband (USB with a frequency of f c + f m ) and another at a subsynchronous frequency that can be considered as a lower-sideband (LSB with a frequency f c − f m ). Such spectral components can generally exist as combinations of various frequency components that are superimposed on the fundamental frequency with same magnitude and contrary phase angles.…”

Section: Review Of Voltage Fluctuations and Flickermentioning

confidence: 99%

“…These lamps are slowly being replaced by other, higher efficiency lamp types in the residential lighting market, such as compact fluorescent and other energy saving lamps. The literature [2] shows that the luminous output of these new lamp types has a reduced sensitivity to voltage fluctuations than the conventional incandescent lamp. This property is being used to support a discussion about a relaxation of the recommended or normative flicker index limits [3].…”

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confidence: 99%

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Rectifier Capacitor Filter Stress Analysis When Subject to Regular Voltage Fluctuations

Zhao

Ciufo

Perera

2013

IEEE Trans. Power Electron.

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Lamp flicker levels which arise as a result of voltage fluctuations can exceed limits set by appropriate standards. New lamp types such as compact fluorescent lights (CFLs) are less sensitive to voltage fluctuations as their flicker characteristics are considerably different compared to those of the traditional incandescent lamp. These differences could support the moderation of the present voltage fluctuation and flicker standards and hence the associated limits. The potential detrimental effects on electrical equipment which may be caused by relaxation of these limits should be investigated before any changes to the present standards take place. The impact of voltage fluctuations on a fullbridge rectifier with a capacitor filter is considered as a case study in this paper. Such a circuit is found at the front end of many different types of equipment that are connected to the public AC supply network. The capacitor ripple current characteristic is of particular interest. The research reported in this paper indicates that the filter capacitor will accumulate and dissipate increased amount of charge when the rectifier is subjected to AC source voltage fluctuations. The consequence is that the RMS value of the capacitor current will increase where the magnitude of this increase is related to the modulation frequency and magnitude of the fluctuating voltage. Therefore, an AC supply with a voltage fluctuation component will cause a full-bridge rectifier with capacitor filter to sustain increased stress. This stress may accelerate the capacitor ageing process, eventually resulting in premature equipment failure. The research indicates that there is a need for indices other that the short-term and long-term flicker indices required for equipment compatibility levels.

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Section: Review Of Voltage Fluctuations and Flickermentioning

confidence: 99%

mentioning

confidence: 99%

Rectifier Capacitor Filter Stress Analysis When Subject to Regular Voltage Fluctuations

Zhao

Ciufo

Perera

2013

IEEE Trans. Power Electron.

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“…With the traditional incandescent lamp being replaced by other, higher efficiency types which are less sensitive to voltage fluctuations suggests relaxation of voltage fluctuation limits and hence the flicker limits in power systems [1], [2]. However, the potential detrimental effects caused by increased voltage fluctuations on other electrical equipment should be considered before existing flicker limits are altered, where further detailed work should be undertaken, such as laboratory tests, considering voltage fluctuation levels greater than those which correspond to currently used flicker compatibility levels.…”

Section: Introductionmentioning

confidence: 99%

Performance of adjustable speed drives subject to regular voltage fluctuations

Zhao

Ciufo

Perera

2014

2014 16th International Conference on Harmonics and Quality of Power (ICHQP)

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The impact of power quality disturbances on customer equipment has been a topic of interest to equipment manufacturers, electricity utilities, customers and to those involved in the development of electromagnetic compatibility standards. Recently, a new interest has developed in the possible impact of voltage fluctuations on customer equipment because of suggestions to relax voltage fluctuation limits and hence the flicker limits in power systems. With a view to contribute to this understanding, this paper investigates the performance of an adjustable speed drive (ASD) when subjected to sinusoidal regular voltage fluctuations. When the ASD is operating in open loop mode, the outcomes of experimental work illustrate that a fluctuating supply voltage will lead to an increase in the rectifier capacitor RMS current. Furthermore, the AC supply side fluctuations can pass through the rectifier and inverter unit and lead to a fluctuation in the induction motor stator current. Abstract-The impact of power quality disturbances on customer equipment has been a topic of interest to equipment manufacturers, electricity utilities, customers and to those involved in the development of electromagnetic compatibility standards. Recently, a new interest has developed in the possible impact of voltage fluctuations on customer equipment because of suggestions to relax voltage fluctuation limits and hence the flicker limits in power systems. With a view to contribute to this understanding, this paper investigates the performance of an adjustable speed drive (ASD) when subjected to sinusoidal regular voltage fluctuations. When the ASD is operating in open loop mode, the outcomes of experimental work illustrate that a fluctuating supply voltage will lead to an increase in the rectifier capacitor RMS current. Furthermore, the AC supply side fluctuations can pass through the rectifier and inverter unit and lead to a fluctuation in the induction motor stator current.

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“…The processing performed by this system's signal chain is complicated [4] to such an extent that it is not easy to obtain output values only analytically. Bibliography concerning this subject contains numerous works that describe the operation and features of flickermeter [5][6][7][8][9][10]. In most of them, authors reconstruct flickermeter's characteristics for the case of amplitude modulation (AM) [3,11,12], input voltage with interharmonic component [12][13][14][15][16][17][18][19][20][21], or step changes of input voltage phase [12,[22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Basic Characteristics of IEC Flickermeter Processing

Majchrzak

Wiczyński

2012

Modelling and Simulation in Engineering

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Flickermeter is a common name for a system that measures the obnoxiousness of flicker caused by voltage fluctuations. The output of flickermeter is a value of short-term flicker severity indicator, P st . This paper presents the results of the numerical simulations that reconstruct the processing of flickermeter in frequency domain. With the use of standard test signals, the characteristics of flickermeter were determined for the case of amplitude modulation of input signal, frequency modulation of input signal, and for input signal with interharmonic component. For the needs of simulative research, elements of standard IEC flickermeter signal chain as well as test signal source and tools for acquisition, archiving, and presentation of the obtained results were modeled. The results were presented with a set of charts, and the specific fragments of the charts were pointed out and commented on. Some examples of the influence of input signal's bandwidth limitation on the flickermeter measurement result were presented for the case of AM and FM modulation. In addition, the diagrams that enable the evaluation of flickermeter's linearity were also presented.

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Flicker responses of different lamp types

Cited by 46 publications

References 7 publications

Rectifier Capacitor Filter Stress Analysis When Subject to Regular Voltage Fluctuations

Rectifier Capacitor Filter Stress Analysis When Subject to Regular Voltage Fluctuations

Performance of adjustable speed drives subject to regular voltage fluctuations

Basic Characteristics of IEC Flickermeter Processing

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