Jonas Wenström

{{Short description|Swedish engineer and inventor (1855–1893)}}

{{Infobox person

| name = Jonas Wenström

| image = File:Wenström.jpg

| caption =

| birth_date = {{Birth date|1855|8|4|df=y}}

| birth_place =

| birth_name =

| death_date = {{Death date and age|1893|12|22|1855|8|4|df=y}}

| death_place =

| nationality = Swedish

| education =

| occupation = Electrical engineer, inventor

}}

Jonas Wenström (4 August 1855 in Hällefors – 22 December 1893 in Västerås) was a Swedish engineer and inventor, who in 1890 received a Swedish patent on the same three-phase system independently developed by Mikhail Dolivo-Dobrovolsky.{{cite book

|first=Lars|isbn=91-7536-330-5|last=Bergström och Nordlund|pages=283|publisher=Naturaläromedel|title=Ellära- Kretsteknik och fältteori

}} This formed the basis for ASEA (later ABB).{{cite encyclopedia

| encyclopedia = Nationalencyklopedin

| title = Jonas Wenström | url = http://ne.se/jonas-wenstr%C3%B6m | accessdate = 2009-08-08 | language = Swedish

}} The possibility of transferring electrical power from a waterfall at a distance was explored at the Grängesberg mine. A {{val|45|ul=m}} fall at Hällsjön, Smedjebackens kommun, where a small iron work had been located, was selected. In 1893, a three-phase {{val|9.5|ul=Kilovolt{{!}}kv}} system was used to transfer 400 horsepower a distance of {{val|15|ul=km}}, becoming the first commercial application.{{cite book

| last= Hjulström | first= Filip

| title= Elektrifieringens utveckling i Sverige, en ekonomisk-geografisk översikt

| year= 1940 | url= https://www.antikvariat.net/sv/rod151504-elektrifieringens-utveckling-i-sverige-en-ekonomisk-geografisk-oversikt-hjulstrom-filip

| trans-quote= Excerpt taken from YMER 1941, häfte 2.Utgiven av Sällskapet för antropologi och geografi: Meddelande från Upsala univeristets geografiska institution, N:o 29, published by Esselte ab, Stockholm 1941 no. 135205

}}

[[File:DC Motor.JPG|thumb|left|Dynamo of Wenström's patent {{Cite patent

|title=Dynamo Electric Machine

|number=292079

|country=US

|pubdate=15 Jan 1884

|url=https://patents.google.com/patent/US292079

}}]]

About the invention of electric light, Wenström wrote: "Edison's new invention of electric light: a glowing carbon strip, is the same thing that I discovered a year ago ... If I had his laboratory, and resources, I would have done the same and better ... a graphite strip between two mica plates provide a more effective light than Edison's."{{Cite web

|url=http://www.ordfabriken.org/autor/autoreter/kraftverk/36.61.htm|title = 36:61

}}

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