Optical fibre current sensor for electrical power engineering

Barczak, K.

doi:10.2478/v10175-011-0049-3

Cited by 23 publications

(9 citation statements)

References 18 publications

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“…Tracking the discussions in the EU it can be concluded that the domestic CHP units, Autonomous Energy Regions and generally distributed energy systems (DES) based on renewable energy sources (RES) play a big role in energy policy and especially in the so-called energy mix not only in Poland but also in EU Countries [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Preliminary Remarksmentioning

confidence: 99%

The dynamics of microturbines lubricated using unconventional agents

Kiciński¹

2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The paper presents the research results of the microturbines dynamics with power of a few to several hundred KW. They are combined heat and power (CHP) units (generating heat and electricity) for houses and for municipalities in the form of Autonomous Energy Regions (ARE). These are key technologies for energy sector with respect to the distributed generation and for small-scale eco-power engineering. The following examples will refer only to the several selected research projects coordinated by the IMP PAN (Institute of FluidFlow Machinery of the Polish Academy of Sciences) in Gdansk. The paper will focus on the dynamics of rotors and bearings lubricated by means of low boiling agents, i.e., by means of turbine working medium. Analysis of hydrodynamic instability phenomena, including the development of oil whirl and oil whip has also been carried out.Key words: rotor dynamics, microurbines, distributed energy generation. Preliminary remarksThe presented in the paper examples refer to the several selected research projects coordinated by the IMP PAN (Institute of Fluid-Flow Machinery of the Polish Academy of Sciences) in Gdansk. However, thy are the largest research projects in the country regarding the field of RES-based eco-power engineering.This article focuses on the results of the work related to so-called "energy-plus" technologies and small & microcombined heat and power units. These results are the effect of research conducted at the institute and in cooperation with industrial partners (mainly the Capital Group ENERGA) and more than a dozen research teams from different research centers across the country. The study focuses on the future implementation and is addressed to individual and municipal consumers.When it comes to the ongoing studies, the construction of the CHP ORC plant is planned (the blocks consisting of a boiler and a microturbine operating with a low-boiling agent using an Organic Rankine Cycle (ORC) with the electric power of several kW and tens of kW of thermal power. Within the framework of the another project it is planned to build CHP ORC units of higher power (hundreds of kW of electrical power, thermal power up to several MW).The results of these projects is thus addressed to individual customers in the form of domestic CHP units, and to the municipal customer as Municipal Energy Centers or Autonomous Energy Regions (ARE).Tracking the discussions in the EU it can be concluded that the domestic CHP units, Autonomous Energy Regions and generally distributed energy systems (DES) based on renewable energy sources (RES) play a big role in energy policy and especially in the so-called energy mix not only in Poland but also in EU Countries [1][2][3][4][5][6][7][8][9][10][11].Microturbines constitute the most important part of the small devices like DES/RES. Analysis of the work of microturbines and microbearings, their construction and operation is a challenge for many centers around the world. Research objectsThe IMP PAN group (that means: IMP PAN, Lodz University of Technology...

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Section: Preliminary Remarksmentioning

confidence: 99%

The dynamics of microturbines lubricated using unconventional agents

Kiciński¹

2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Luminescence in the visible spectral range. Rapid development of fibre sensors encourages the quest for new and efficient sources of radiation in the visible spectrum which would be noticeable for their high stability of emission and compactness [34,35]. Allocating several lanthanide ions in a single matrix offers a possibility of producing luminescence by means of transitions which are difficult to realize through direct optical pumping.…”

Section: +mentioning

confidence: 99%

Active optical fibres for application in laser and broadband ASE sources

Dorosz¹,

Dorosz²,

Zając³

et al. 2012

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. The article brings into focus the present state of technology employing active fibres doped with rare earth (RE) ions for applications requiring power supply of several dozen watts and broadband ASE sources. Current trends in development of glasses and in construction of active fibres used in fibre sources of radiation within VIS-NIR range are presented. Technological constraints in the doping of fibre core glasses are discussed, with particular consideration of optimal RE concentration for technical applications. Characteristics of glasses are offered, and the glasses are used for manufacturing optical fibres with luminescence within the visible as well as near-and mid-infrared ranges. Also, requirements and luminescence properties concerning glasses co-doped with e.g. Nd 3+ /Yb 3+ ,Tm 3+ /Ho 3+ and Yb 3+ /Tb 3+ are discussed. Results of research on the impact of technological parameters of glass matrices on luminescence properties of core glasses and optical fibres are quoted. For the doped glasses of which luminescence in a wide spectral range is desired, conditions for their processing into optical fibre systems are mentioned. Additionally, the impact of phonon energy in the glass on producing emission in a specified spectral range is analyzed. Furthermore, the article presents directions of technological studies to solve problems persisting in the phase of glass matrix design, as well as in determining the influence of fibre drawing process on the luminescence properties of core glasses and optical fibres, confirming the differences in luminescence stemming from the drawing process. Finally, some original designs of core glasses and active multicore fibre systems devised for construction of fibre radiation sources are presented.

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“…The today's tendency is to have a "smart" network where consumed power should be better monitored with newer generations of sensors [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Design of a current sensor based on optical fibers

Stanciu

Ghita

Vintea

et al. 2015

2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

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This paper present the design of a current sensor based on Faraday Effect using optical fibers devices and a polarizing beam splitter (PBS). Two different schematics are to be taken into account, for high currents and for smaller ones. A single polarized laser signal is sent to the PBS prism and two angular components are separated. From here, these optical signals are processed using some interfaces, a NI-DAQ acquisition board and a LabVIEW interface. After calculations, the unknown current is obtained function of the reflexion angle between the two light components.

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Optical fibre current sensor for electrical power engineering

Cited by 23 publications

References 18 publications

The dynamics of microturbines lubricated using unconventional agents

The dynamics of microturbines lubricated using unconventional agents

Active optical fibres for application in laser and broadband ASE sources

Design of a current sensor based on optical fibers

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