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Papers by Ansis Avotins
Elektronika Ir Elektrotechnika, Feb 11, 2013
IoT solutions enable to gather more detailed consumption and sensor data, and paper deals with re... more IoT solutions enable to gather more detailed consumption and sensor data, and paper deals with real measurements, where as a measurement object a university faculty building is selected, that has Building Management system, lighting, HVAC systems, and in consumption it is comparable also to industrial building. For data analysis, real measurement parameters like electrical power consumption, room temperatures, humidity, CO2 levels, heat energy, ventilation system pressures and also data from meteorological weather station are obtained simultaneously for several months, using LoRaWAN network and sensors, thus giving ability to have wide data analysis options, to crosscheck complex systems. Also buildings simplified mathematical model is created using 6R1C approach. Paper also describes experiments carried out to compare real measurement data with theoretically calculated values using the 6R1C model.
ABSTRACT Practical workshops are one of the key points to achieve good knowledge in engineering. ... more ABSTRACT Practical workshops are one of the key points to achieve good knowledge in engineering. Faculty or campus based workshops allow to practice only several of hours per week or less due to limited workplaces. Limited possibilities set longer time to finish course, especially if the university has divisions in different cities, offering the same learning course. Possibility to gain some practical skills out of the real workshop becomes advanced part of the studies. Remote workshop, based on public networks, is an add-on tool in electrical engineering studies. Remote e-Learning workshop improves courses in such fields like electrical drives control, power electronics, LED lighting control, automatic control algorithms and regulators.
RTU Press eBooks, Mar 24, 2022
IEEE Electromagnetic Compatibility Magazine, 2018
publication.editionName, 2015
European Conference on Power Electronics and Applications, Sep 1, 2018
Paper describe physical DC microgrid realization for research and modelling tasks and its alignme... more Paper describe physical DC microgrid realization for research and modelling tasks and its alignment with unique DC microgrid installation at automotive factory under real manufacturing conditions. Focus on key component modelling and verification such as bidirectional grid interface AC/DC frontend converter has been presented at real load conditions.
Raksts ir par vienu no alternatīvās enerģijas ieguves veidiem – jūras viļņa enerģiju. Pieaugot ci... more Raksts ir par vienu no alternatīvās enerģijas ieguves veidiem – jūras viļņa enerģiju. Pieaugot cilvēku skaitam, pieaug arī elektroenerģijas patēriņš, tādēļ ir aktuāli alternatīvie enerģijas ieguves veidi un energoefektīvāku elektroierīču izstrādāšana. Fakts, ka 71% no Zemes platības sedz jūras un okeāni, liecina par to, ka šo enerģijas iegūšanas veidu nevajadzētu atstāt novārtā. Rakstā tiek aplūkoti dažādi enerģijas pārveidošanas principi un mehāniskās piedziņas ģeneratori, pneimatiski un hidrauliski piedzenamie ģeneratori un lineārās induktivitātes ģeneratori, kas elektromehānisko enerģiju pārveido elektriskajā, kā arī dots ieskats par šo enerģijas pārveidotāju elektrisko parametru un raksturlielumu matemātiskajiem aprēķiniem
The paper gives estimation of city development study, case study of Riga city describes, implemen... more The paper gives estimation of city development study, case study of Riga city describes, implementation of intelligent lighting, and experimental results of measurements of LED luminaries in real conditions
Ņemot vērā arvien pieaugošo pieprasījumu pēc elektroenergijas un nepieciešannou to taupīt, jāizvē... more Ņemot vērā arvien pieaugošo pieprasījumu pēc elektroenergijas un nepieciešannou to taupīt, jāizvērtē, kā var taupīt, izmantojot altematīvos energijas resursus apgaismojuma sistēmās. Pētījumā ir apskatīts viens no jaunākajiem risinājumiem apgaismojuma nozarē, izmantojot jaudīgās gaismas diodes, kuru gaismas atdeves efektivitāte ir ļoti augsta
2023 IEEE 10th Jubilee Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)
Elektronika Ir Elektrotechnika, Feb 11, 2013
IoT solutions enable to gather more detailed consumption and sensor data, and paper deals with re... more IoT solutions enable to gather more detailed consumption and sensor data, and paper deals with real measurements, where as a measurement object a university faculty building is selected, that has Building Management system, lighting, HVAC systems, and in consumption it is comparable also to industrial building. For data analysis, real measurement parameters like electrical power consumption, room temperatures, humidity, CO2 levels, heat energy, ventilation system pressures and also data from meteorological weather station are obtained simultaneously for several months, using LoRaWAN network and sensors, thus giving ability to have wide data analysis options, to crosscheck complex systems. Also buildings simplified mathematical model is created using 6R1C approach. Paper also describes experiments carried out to compare real measurement data with theoretically calculated values using the 6R1C model.
ABSTRACT Practical workshops are one of the key points to achieve good knowledge in engineering. ... more ABSTRACT Practical workshops are one of the key points to achieve good knowledge in engineering. Faculty or campus based workshops allow to practice only several of hours per week or less due to limited workplaces. Limited possibilities set longer time to finish course, especially if the university has divisions in different cities, offering the same learning course. Possibility to gain some practical skills out of the real workshop becomes advanced part of the studies. Remote workshop, based on public networks, is an add-on tool in electrical engineering studies. Remote e-Learning workshop improves courses in such fields like electrical drives control, power electronics, LED lighting control, automatic control algorithms and regulators.
RTU Press eBooks, Mar 24, 2022
IEEE Electromagnetic Compatibility Magazine, 2018
publication.editionName, 2015
European Conference on Power Electronics and Applications, Sep 1, 2018
Paper describe physical DC microgrid realization for research and modelling tasks and its alignme... more Paper describe physical DC microgrid realization for research and modelling tasks and its alignment with unique DC microgrid installation at automotive factory under real manufacturing conditions. Focus on key component modelling and verification such as bidirectional grid interface AC/DC frontend converter has been presented at real load conditions.
Raksts ir par vienu no alternatīvās enerģijas ieguves veidiem – jūras viļņa enerģiju. Pieaugot ci... more Raksts ir par vienu no alternatīvās enerģijas ieguves veidiem – jūras viļņa enerģiju. Pieaugot cilvēku skaitam, pieaug arī elektroenerģijas patēriņš, tādēļ ir aktuāli alternatīvie enerģijas ieguves veidi un energoefektīvāku elektroierīču izstrādāšana. Fakts, ka 71% no Zemes platības sedz jūras un okeāni, liecina par to, ka šo enerģijas iegūšanas veidu nevajadzētu atstāt novārtā. Rakstā tiek aplūkoti dažādi enerģijas pārveidošanas principi un mehāniskās piedziņas ģeneratori, pneimatiski un hidrauliski piedzenamie ģeneratori un lineārās induktivitātes ģeneratori, kas elektromehānisko enerģiju pārveido elektriskajā, kā arī dots ieskats par šo enerģijas pārveidotāju elektrisko parametru un raksturlielumu matemātiskajiem aprēķiniem
The paper gives estimation of city development study, case study of Riga city describes, implemen... more The paper gives estimation of city development study, case study of Riga city describes, implementation of intelligent lighting, and experimental results of measurements of LED luminaries in real conditions
Ņemot vērā arvien pieaugošo pieprasījumu pēc elektroenergijas un nepieciešannou to taupīt, jāizvē... more Ņemot vērā arvien pieaugošo pieprasījumu pēc elektroenergijas un nepieciešannou to taupīt, jāizvērtē, kā var taupīt, izmantojot altematīvos energijas resursus apgaismojuma sistēmās. Pētījumā ir apskatīts viens no jaunākajiem risinājumiem apgaismojuma nozarē, izmantojot jaudīgās gaismas diodes, kuru gaismas atdeves efektivitāte ir ļoti augsta
2023 IEEE 10th Jubilee Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE)