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Title:
Meritev obratovalnih karakteristik veternih turbin : diplomsko delo
Authors:
ID
Švent, Jerneja
(Author)
ID
Biluš, Ignacijo
(Mentor)
More about this mentor...
ID
Lešnik, Luka
(Comentor)
Files:
UN_Svent_Jerneja_2020.pdf
(1,74 MB)
MD5: AB1078AE20D7BB514730829AFBB84E9D
PID:
20.500.12556/dkum/6dc83881-8d8a-45a6-a5c1-e87921ede914
Language:
Slovenian
Work type:
Bachelor thesis/paper
Typology:
2.11 - Undergraduate Thesis
Organization:
FS - Faculty of Mechanical Engineering
Abstract:
Diplomska naloga Meritev obratovalnih karakteristik vetrnih turbin primerja obratovalne karakteristike rotorjev pod različnimi vhodnimi pogoji in analizira dobljene rezultate na podlagi merjenj. Merjenja najprej potekajo s pomočjo izmerjenega električnega toka in napetosti na enosmernem generatorju, a so dobljeni rezultati končnih izkoristkov precej nizki, zato se razvije nov merilni sistem, ki s pomočjo merilnih lističev in njihove upornosti meri silo, ki deluje na ročico preko katere je vpet enosmerni generator. Po umerjanju novo razvitega merilnega sistema se na istih rotorjih z enakimi vrtilnimi frekvencami, kot se je merilo v predhodnih merjenjih, izmeri sila na rotorju turbine in iz tega navor ter moč turbine. Končni koeficienti izkoristkov turbine z merilnim sistemom, ki meri s pomočjo mehanskih veličin so precej višji in ne presegajo Betzove limite, zato lahko na podlagi rezultatov (ki so ponovljivi) trdimo, da je ta merilni sistem ugodnejši za merjenje karakteristih rotorja, saj nanj vpliva manj zunanjih faktorjev kot na sistem, ki meri električne veličine, kjer se mora upoštevati še pretvorba iz mehanske v električno energijo skupaj z vsemi izgubami, ki pa za merjenje karakteristik rotorja niso relevantne.
Keywords:
obnovljivi viri energije
,
vetrna energija
,
merilni sistemi
,
karakteristike vetrnih turbin
Place of publishing:
Maribor
Place of performance:
Maribor
Publisher:
[J. Švent]
Year of publishing:
2020
Number of pages:
XII, 43 str.
PID:
20.500.12556/DKUM-77522
UDC:
621.548.4(043.2)
COBISS.SI-ID:
35603459
NUK URN:
URN:SI:UM:DK:FKAT9PEP
Publication date in DKUM:
24.09.2020
Views:
1066
Downloads:
127
Metadata:
Categories:
KTFMB - FS
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:
ŠVENT, Jerneja, 2020,
Meritev obratovalnih karakteristik veternih turbin : diplomsko delo
[online]. Bachelor’s thesis. Maribor : J. Švent. [Accessed 31 March 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=77522
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Licences
License:
CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:
The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:
02.09.2020
Secondary language
Language:
English
Title:
Measurement of operating characteristics of wind turbines
Abstract:
Diploma Measurement of operating characteristics of wind turbines compare operating characteristics of wind turbines under different input conditions, and analyses given results of measurement. Measurements take place first time with help of measured electric current and voltage on DC generator, but the results of final efficiencies are very low. That is the reason why a new measurement system is being developed. The force acting on the lever at the bearings where DC generator is attached is measured with strain gauges. After calibration of new measurement system, the force is measured on same rotors with same rotational speed as on first measurement system. With results it is possible to calculate torque and power of turbine. Final coefficient ratios are much higher, but still do not exceed Betz's limit, so we can say that new measurement system is more appropriate. The reason tor this is in less external influences, comparing to the first system that measures electrical quantities, where conversion from mechanical to electrical energy includes all losses.
Keywords:
renewable energy
,
wind energy
,
measurement system
,
characteristics of wind turbines
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