Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.

This paper presents regulation of an asynchronous induction motor so as to create a stable vacuum milk pump using Variable Frequency Drive (VFD). Contribution includes providing information about the usage of the VFD, which regulates the activity of an asynchronous induction motor so that the vacuum...

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Autores principales: Jan Kudělka, Jiří Fryč, Vlastimil Slaný, Robert Rouš, Akshaya Raj, Radek Martínek
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Lenguaje:EN
Publicado: Public Library of Science (PLoS) 2021
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Acceso en línea:https://doaj.org/article/7adb177f48b547a48e851c54775503ad
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spelling oai:doaj.org-article:7adb177f48b547a48e851c54775503ad2021-12-02T20:05:14ZParameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.1932-620310.1371/journal.pone.0253427https://doaj.org/article/7adb177f48b547a48e851c54775503ad2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0253427https://doaj.org/toc/1932-6203This paper presents regulation of an asynchronous induction motor so as to create a stable vacuum milk pump using Variable Frequency Drive (VFD). Contribution includes providing information about the usage of the VFD, which regulates the activity of an asynchronous induction motor so that the vacuum pump milking machine creates stable vacuum. The paper describes the functional and time dependence of input values and output parameters of frequency converters at changing electric motor speed. For simulation and verification the milking process a mathematical model of the milking machine was created. The simulation was verified in Matlab/Simulink software. The constructed mathematical model showed symmetric regulation. Control model symmetry was verified at the laboratory of milking machine. The possibility to remove the control valve from milking equipment was proven using the measured data. It was found that constant vacuum values can be maintained. A constant vacuum can be maintained by changing vacuum pump speed. This control is of an accepted standard (ISO 5707: 2007). The power saving control values (on the milking equipment) of the VFD were positive throughout the measuring range. The performance of the milking vacuum pump is normally designed from the maximum air consumption of the milking machine at nominal vacuum (50 kPa), and a performance reserve is added to this. This means that the pump is operated between the ranges 7.53 and 15.06 dm3 s-1. By using a vacuum pump controlled by a VFD, power savings can be achieved from 32.50% to 54.02% compared to a control valve.Jan KudělkaJiří FryčVlastimil SlanýRobert RoušAkshaya RajRadek MartínekPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0253427 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Jan Kudělka
Jiří Fryč
Vlastimil Slaný
Robert Rouš
Akshaya Raj
Radek Martínek
Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.
description This paper presents regulation of an asynchronous induction motor so as to create a stable vacuum milk pump using Variable Frequency Drive (VFD). Contribution includes providing information about the usage of the VFD, which regulates the activity of an asynchronous induction motor so that the vacuum pump milking machine creates stable vacuum. The paper describes the functional and time dependence of input values and output parameters of frequency converters at changing electric motor speed. For simulation and verification the milking process a mathematical model of the milking machine was created. The simulation was verified in Matlab/Simulink software. The constructed mathematical model showed symmetric regulation. Control model symmetry was verified at the laboratory of milking machine. The possibility to remove the control valve from milking equipment was proven using the measured data. It was found that constant vacuum values can be maintained. A constant vacuum can be maintained by changing vacuum pump speed. This control is of an accepted standard (ISO 5707: 2007). The power saving control values (on the milking equipment) of the VFD were positive throughout the measuring range. The performance of the milking vacuum pump is normally designed from the maximum air consumption of the milking machine at nominal vacuum (50 kPa), and a performance reserve is added to this. This means that the pump is operated between the ranges 7.53 and 15.06 dm3 s-1. By using a vacuum pump controlled by a VFD, power savings can be achieved from 32.50% to 54.02% compared to a control valve.
format article
author Jan Kudělka
Jiří Fryč
Vlastimil Slaný
Robert Rouš
Akshaya Raj
Radek Martínek
author_facet Jan Kudělka
Jiří Fryč
Vlastimil Slaný
Robert Rouš
Akshaya Raj
Radek Martínek
author_sort Jan Kudělka
title Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.
title_short Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.
title_full Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.
title_fullStr Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.
title_full_unstemmed Parameters setting of Frequency Converter PI regulation to ensure the vacuum of the milking process.
title_sort parameters setting of frequency converter pi regulation to ensure the vacuum of the milking process.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/7adb177f48b547a48e851c54775503ad
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