Analyses of supply voltage quality, power consumption and losses affected by shunt capacitors for power factor correctionVinnal, Toomas; Janson, Kuno; Kalda, Heljut; Kütt, LauriPQ2010 : 7th International Conference "2010 Electric Power Quality and Supply Reliability" : June 16-18, 2010, Kuressaare, Estonia2010 / p. 53-60 : ill

Analysis of microgrid configuration effects on energy efficiencyPeterson, Kristjan; Ahmadiahangar, Roya; Shabbir, Noman; Vinnal, Toomas2019 IEEE 60th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON), 7-9 October 2019 : conference proceedings2019 / 6 p. : ill https://doi.org/

Analysis of power consumption and losses in relation to supply voltage levelsVinnal, Toomas; Kütt, Lauri; Kalda, Heljut6th International Conference "2008 Power Quality and Supply Reliability" : August 27-29, 2008 : Pärnu, Estonia : conference proceedings2008 / p. 23-28 : ill

Analysis of power consumption and losses in relation to supply voltage quality [Electronic resource]Vinnal, Toomas; Janson, Kuno; Kalda, HeljutEPE 2009 : 13th European Conference on Power Electronics and Applications : 8-10 September 2009, Barcelona, Spain2009 / [9] p. : ill. [CD-ROM] https://ieeexplore.ieee.org/document/5278764

Analysis of traditional and alternative methods for solving voltage problems in low voltage grids : an Estonian case studyRosin, Argo; Drovtar, Imre; Mõlder, Heigo; Haabel, Kaija; Astapov, Victor; Vinnal, Toomas; Korõtko, TarmoEnergies2022 / art. 1104 https://doi.org/10.3390/en15031104 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Analysis on AC motor losses due to harmonic levels increase caused by switched capacitor passive power factor correctionMõlder, Heigo; Vinnal, Toomas; Beldjajev, Viktor9th International Symposium "Topical problems in the field of electrical and power engineering". Doctoral school of energy and geotechnology. II : Pärnu, Estonia, June 14-19, 20102010 / p. 42-46 : ill

Application of self-adjusting features of resonant convertersJanson, Kuno; Järvik, Jaan; Vinnal, Toomas9th European Conference on Power Electronics and Applications : 27-29 August 2001, Graz, Austria2001 / p. L6a-1 : ill

Application of self-adjusting features of resonant converters [Electronic resource]Janson, Kuno; Järvik, Jaan; Vinnal, ToomasEPE 2001 : 9th European Conference on Power Electronics and Applications : 27-29 August 2001, Graz2001 / [9] p.: ill. [CD-ROM]

Case study of non-linear PV inverter devices attached to the LV distribution networkVinnal, Toomas; Puusepp, Hardi; Shabbir, Noman; Kütt, Lauri; Iqbal, Muhammad NaveedAgronomy research2020 / p. 2639−2652 : ill https://doi.org/10.15159/AR.20.233 https://dspace.emu.ee/xmlui/handle/10492/5955 Journal metrics at Scopus Article at Scopus

Charging of high power pulse capacitors from resonant converter of alternating parallel and series resonanceJanson, Kuno; Järvik, Jaan; Vinnal, ToomasElektroenergetika 2000 : mezinarodni vedecka konference : sbornik prednašek2000 / p. 93-97 : ill

Circuit diagrams of AC-DC line-frequency resonant converters with alternation of parallel and series resonant modeJanson, Kuno; Järvik, Jaan; Vinnal, Toomas5th International Conference : Electrical Power Quality and Utilisation : September 15-17, 1999, Cracow, Poland : EPQU'99 : proceedings1999 / p. 479-484 : ill

Commutation processes in the diode bridge of resonant converter with alternating parallel and series resonanceJanson, Kuno; Järvik, Jaan; Vinnal, ToomasThe 7th Biennial Conference on Electronics and Microsystem Technology "Baltic Electronics Conference" : BEC 2000 : October 8 - 11, 2000, Tallinn, Estonia : conference proceedings2000 / p. 205-208 : ill

Determination of reactive components parameters for converter with alternating of parallel and series resonanceJanson, Kuno; Järvik, Jaan; Vinnal, ToomasPEDC 2001 : Power Electronics Devices Compatibility : 2nd Conference : 3-5 September 2001, Zielona Gora, Poland2001 / p. 88-96 : ill

Eesti ettevõtete elektritarbimise uurimine ja soovituste väljatöötamine tarbimise optimeerimiseks = Study of electric power consumption in Estonian companies and recommendations for optimization of consumptionVinnal, Toomas2011

Effects of PV microgeneration on rural LV network voltage quality - harmonics and unbalanceHürmeydan, Semih; Rosin, Argo; Vinnal, ToomasPQ2016 : the 10th International Conference 2016 Electric Power Quality and Supply Reliability Conference (PQ) : August 29-31, 2016, Tallinn, Estonia : proceedings2016 / p. 97-100 : ill https://doi.org/10.1109/PQ.2016.7724096

Effects of PV microgeneration on rural LV network voltage quality [Online resource]Hürmeydan, Semih; Rosin, Argo; Vinnal, Toomas; Jagomägi, Andri2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) : October 13, 14, 2016 : conference proceedings2016 / [4] p. : ill https://doi.org/10.1109/RTUCON.2016.7763083

Electric Power Quality and Supply Reliability : June 9-12, 1999, Sagadi, Estonia : conference proceedingsJärvik, Jaan; Vinnal, Toomas1999 https://www.ester.ee/record=b1817525*est

Elektrienergia säästlik kasutamine hoonetes : õppematerjalTeemets, Raivo; Vinnal, Toomas2013 http://www.ester.ee/record=b3033912*est

Elektrivarustuse tulevikuvisioonidLehtla, Tõnu; Vinnal, Toomas2015 http://www.ester.ee/record=b4511325*est

Elektrivarustuse tulevikuvisioonid : [kõrgkooliõpik]Lehtla, Tõnu; Vinnal, Toomas2016 http://www.ester.ee/record=b4571559*est

5th International Conference : Electric Power Quality and Supply Reliability : August 23-26, 2006, Viimsi, Estonia : conference proceedings2006 http://www.ester.ee/record=b2184858*est

Harmonic current summation using probabilistic bivariate modelling = Vooluharmoonikute summeerimine rakendades kahe muutujaga tõenäosuslikku modelleerimistJarkovoi, Marek2019 https://digikogu.taltech.ee/et/Item/35d500c0-f295-4dd5-b8a5-8feb6a184d32

Harmonic currents and voltages in industrial LV networks - case studiesVinnal, Toomas; Kütt, Lauri; Jarkovoi, Marek2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM 2018) : Amalfi, Italy, 20-22 June 20182018 / p. 177-182 : ill https://doi.org/10.1109/SPEEDAM.2018.8445234

Harmonic currents and voltages in LV networks of Estonia : measurement results, case studiesVinnal, Toomas; Jarkovoi, Marek; Kütt, Lauri59th Annual International Scientific Conference on Power and Electrical Engineering : November 12, 13, 2018, Riga Technical University (RTUCON) : conference proceedings2018 / 7 p. : ill https://doi.org/10.1109/RTUCON.2018.8659875

Harmonic load of residential distribution network - case study monitoring resultsKütt, Lauri; Saarijärvi, Eero; Lehtonen, Matti; Mõlder, Heigo; Vinnal, ToomasPQ2014 : the 9th International 2014 Electric Power Quality and Supply Reliability Conference (PQ) : June 11-13, 2014, Rakvere, Estonia : proceedings2014 / p. 93-98 : ill

Harmonic losses in induction motors caused by voltage waveform distortionsMõlder, Heigo; Vinnal, Toomas; Beldjajev, ViktorPQ2010 : 7th International Conference "2010 Electric Power Quality and Supply Reliability" : June 16-18, 2010, Kuressaare, Estonia2010 / p. 143-148 : ill

Harmonic voltages and currents in LV industrial power systems, shunt capacitors and additional power lossesVinnal, Toomas; Kalda, Heljut; Mõlder, Heigo9th International Symposium "Topical problems in the field of electrical and power engineering". Doctoral school of energy and geotechnology. II : Pärnu, Estonia, June 14-19, 20102010 / p. 47-52 : ill

High power factor AC-DC line-frequency resonant converter for deeply varying loadsJanson, Kuno; Järvik, Jaan; Vinnal, Toomas5 Congresso Brasileiro de Eletronica de Potencia = The 5th Brazilian Power Electronics Conference : COBEP99 : Foz do Iguagu, Parana, Brasil, 19 a 23 de setembro de 1999. Vol. 11999 / p. 423-428

Higher harmonics in AC-DC line-frequency resonant converter for deeply varying loadsJanson, Kuno; Järvik, Jaan; Vinnal, ToomasElectric Power Quality and Supply Reliability : June 9-12, 1999, Sagadi, Estonia : conference proceedings1999 / p. 96-101: ill

Higher harmonics in load-adapting mains Frequency resonant converterJanson, Kuno; Järvik, Jaan; Vinnal, Toomas8th International Conference on Harmonics and Quality of Power, October 14-16, 1998, Athens, Greece : proceedings. Vol. 21998 / p. 859-864: ill

Hoonete energiakulu on võimalik vähendadaVinnal, ToomasNädaline1999 / 11. märts, lk. 6

Improvement of environmental and health issues in educational institutionsTint, Piia; Kask, Ülo; Kõiv, Teet-Andrus; Vinnal, Toomas; Reinhold, KarinSafety and Reliability for Managing Risk : proceedings of the European Safety and Reliability Conference 2006 (ESREL 2006) : Estoril, Portugal, 18-22 September. Volume 12006 / p. 835-840 : ill

Inimesele toimivate elektri-, magnet- ja elektromagnetväljade (0 HZ kuni 300 GHz) mõõtmis- ja arvutusviiside põhistandard [Võrguteavik] = Basic standard on measurment and calculation procedures for human exposure to electric, magnetic and electromagnetic fields (0 Hz - 300 GHz)2019 https://www.ester.ee/record=b5294775*est

Installed capacities of reactive components and transformer in line frequency resonant convertersJanson, Kuno; Järvik, Jaan; Vinnal, ToomasEPQU'01 : Electrical Power Quality and Utilisation : 6th International Conference : September 19-21, 2001, Cracow, Poland : proceedings2001 / p. 445-449 : ill

Inverter mode in converter with alternating of parallel and series resonanceJanson, Kuno; Järvik, Jaan; Šklovski, Jevgeni; Vinnal, ToomasEPE-PEMC 2004 : 11th International Power Electronics and Motion Control Conference : 2-4 September 2004, Riga, Latvia : proceedings. Vol. 1 of 7, Power electronic converters and control2004 / p. 1-227 - 1-232 : ill

Load adapting resonant converter as a transformer with smoothly variable ratioJanson, Kuno; Järvik, Jaan; Vinnal, Toomas43. Internationales Wissenschaftliches Kolloquium, 21.-24.09.1998. Band 4, Elektroenergiesysteme und elektrische Geräte, Diagnostik, Hochspannungstechnik und elektrische Isoliertechnik, Energiewandlung : Vortragsreihen1998 / S. 657-662: Ill

Load adapting resonant converter for supplying deeply varying loadJanson, Kuno; Järvik, Jaan; Vinnal, ToomasBEC'98 : the 6th Biennial Conference on Electronics and Microsystems Technology, October 7-9, 1998, Tallinn, Estonia : proceedings1998 / p. 227-230: ill

Measurements and analyses of supply voltage magnitude and voltage variations in Estonian industrial companiesVinnal, Toomas; Kalda, Heljut; Mõlder, Heigo10th International Symposium "Topical Problems in the Field of Electrical and Power Engineering”. Doctoral School of Energy and Geotechnology II : Pärnu, Estonia, January 10-15, 20112011 / p. 46-51 : ill

14-15. aprillil 2011 : Energia- ja geotehnika doktorikooli II intensiivkursus "Elektri allikad, tarbijad, muundurid ja salvestid ning nende mõju elektrikvaliteedile" : [käsikiri]Järvik, Jaan; Vinnal, Toomas2011

New theoretical approach to input current shaping in ac-dc power converters [Electronic resource]Janson, Kuno; Bolgov, Viktor; Vinnal, Toomas; Järvik, JaanProceedings of 5th International Conference 2007 : Compatibility in Power Electronics : 29 May - 1 June 2007, Gdynia, Poland2007 / [8] p. : ill. [CD-ROM] https://ieeexplore.ieee.org/document/4296517

New trends in the development of power supplies for arc furnacesJanson, Kuno; Järvik, Jaan; Vinnal, ToomasPEDC'99 : International Workshop on Power Electronics Equipment for Power Quality Improvement : Slubice, 19991999 / p. 26-37

Operation of PSA converter in inverter modeJanson, Kuno; Järvik, Jaan; Šklovski, Jevgeni; Vinnal, ToomasThe 4th International Conference Electric Power Quality and Supply Reliability : August 29...31, 2004, Pedase, Estonia : proceedings2004 / p. 81-86 : ill

Power losses in induction motors in relation to supply voltage qualityVinnal, Toomas; Janson, Kuno; Kalda, HeljutPCIM 2010 Power Electronics, Intelligent Motion, Power Quality : Nuremberg, Germany, 4-6 May 20102010 / p. 636-642

Power quality problems in low voltage networks of EstoniaVinnal, Toomas; Janson, Kuno; Kalda, Heljut; Sakkos, TiiuCIRED 2013 : 22nd international conference & exhibition on electricity distribution : 10-13 june 2013 Kistamässan, Kista, Stockholm, Sweden : electricity distribution systems for a sustainable future : special reports2013 / p. 1-4 : ill

Rahvusvaheline elektrotehnika sõnastik. Osa 482, Primaar- ja sekundaarelemendid ja -patareid [Võrguteavik] = International Electrotechnical Vocabulary.
Part 482: Primary and secondary cells and batteries (IEC 60050-482:2004 +
IEC 60050-482:2004/Amd 1:2016 - IEC 60050-482:2004/Amd 2:2020, identical)2020 https://www.evs.ee/StandardDownload/DownloadPreview?productId=134267&language=43

Resonances in LV industrial networks when using shunt capacitors for power factor correctionVinnal, Toomas; Sakkos, Tiiu; Janson, Kuno; Jarkovoi, Marek23rd International Conference on Electricity Distribution : Lyon, 15-18 June 20152015 / Paper 0135, p. 1-4 : ill

Resonances in LV industrial networks when using shunt capacitors for power factor correctionVinnal, Toomas; Sakkos, Tiiu; Janson, Kuno; Jarkovoi, Marek23rd International Conference and Exhibition on Electricity Distribution : Lyon (France), 15-18 June 2015 : special reports2015 / p. 12/33 : ill

Simple and compatible resonant converter for supplying electric arcJanson, Kuno; Järvik, Jaan; Vinnal, ToomasPower Electronics Conference : PCIM 2002, March 12-15, 2002, Shanghai, China : official proceedings of the international conference2002 / p. 232-237 : ill

Study methods of AC-DC line-frequency resonant converters with alternation of parallel and series resonant modeJanson, Kuno; Järvik, Jaan; Vinnal, Toomas5th International Conference : Electrical Power Quality and Utilisation : September 15-17, 1999, Cracow, Poland : EPQU'99 : proceedings1999 / p. 475-478 : ill

Supply voltage level optimisation in low voltage networks using shunt capacitorsVinnal, Toomas; Janson, Kuno; Kalda, Heljut; Kütt, LauriElectrical and control technologies : proceedings of the the 7th international conference on electrical and control technologies ECT-20122012 / p. 206-211 : ill

Supply voltage level optimization in industrial low voltage networksVinnal, Toomas; Janson, Kuno; Kalda, Heljut; Sakkos, TiiuPQ2012 : 8th International Conference : 2012 Electric Power Quality and Supply Reliability : June 11-13, 2012, Tartu, Estonia : conference proceedings2012 / p. 149-154 : ill https://ieeexplore.ieee.org/document/6256219

Supply voltage quality in low voltage industrial networks of EstoniaVinnal, Toomas; Janson, Kuno; Järvik, Jaan; Kalda, Heljut; Sakkos, TiiuEstonian journal of engineering2012 / p. 102-126 : ill

Sõidukid ja maksudVinnal, ToomasEesti Päevaleht1996 / 4. nov., lk. 2

Taani tänane energeetikaVinnal, ToomasEesti Energia AS Teataja : [infoleht]?1999 / 15. jaan., nr. 2(33), lk. 4

Termovisioon elektriseadmete seisundi jälgimiselVinnal, ToomasPingering1997 / 19. dets., lk. 3

The 4th International Conference : Electric Power Quality and Supply Reliability : August 29...31, 2004, Pedase, Estonia : proceedings2004 https://www.ester.ee/record=b1978182*est

Voltage dips and swells in low voltage networks of EstoniaVinnal, Toomas; Jarkovoi, Marek; Kütt, Lauri59th Annual International Scientific Conference on Power and Electrical Engineering : November 12, 13, 2018, Riga Technical University (RTUCON) : conference proceedings2018 / 6 p. : ill https://doi.org/10.1109/RTUCON.2018.8659899

Ühistransport - vajalik või mitte?Vinnal, ToomasEesti Päevaleht1996 / 9. dets., lk. 2

Ühisveondus. Vajalik või mitte?Vinnal, ToomasÕhtuleht1996 / 16. dets., lk. 2

Патент N 2032262 на изобретание (Российская Федерация) : Индукционный аппарат "UVAR" со ступенчатым переключением витков обмотки под нагрузкой : зарегистрировано в Государственном реестре изобретений 27 марта 1995 г. RU 2032262 C1Vinnal, Toomas; Tellinen, Juhan; Janson, Kuno; Järvik, Jaan1995

Патент N 2033682 на изобретание (Российская Федерация) : Преобразователь переменного напряжения в переменное со ступенчатым регулированием : зарегистрировано в Государственном реестре изобретений 20 апреля 1995 г. RU 2033682 C1Vinnal, Toomas; Janson, Kuno; Järvik, Jaan1995

Разработка и исследование устройств переключения ответвлений трансформатора под нагрузкой : работа на соиск. степ. магистра = [Koormatud trafo väljavõtete ümberlülitite väljatöötamine ja uurimine]Vinnal, Toomas1992 https://www.ester.ee/record=b2630871*est

Технико-экономические показатели насыщающегося реактора 3300 кВА, 10 кВVladislavlev, Mihhail; Pool, Ain-Matt; Vinnal, Toomas; Järvik, Jaan; Tellinen, JuhanСимпозиум "Эффективность применения управляемых реакторов в энергосистемах", 14-16 нояб. 1989 г. : тезисы докладов1989 / с. 32-33

Трансформатор РПН с обслуживающим тиристорным переключателем ответвленийVinnal, Toomas; Tõnuri, I.; Järvik, JaanИсследование электрических машин и электромагнитных устройств специального назначения1983 / с. 49-58

Трансформатор РПН с тиристорным переключением ответвленийVinnal, Toomas; Tõnuri, I.; Järvik, JaanНовая техника в электроснабжении промышленных предприятий : материалы конференции1983 / с. 44-48

ЭлектромеханикаVõrk, Rein; Kalda, Heljut; Mežburd, Volf; Tellinen, Juhan; Pool, Ain-Matt; Järvik, Jaan; Varik, Lembit-Heino; Roninson, Aleksander; Vinnal, Toomas; Tõnuri, I.; Risthein, Endel; Janson, Kuno1983 https://www.ester.ee/record=b1271915*est