- 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