Mikhail Dolivo-Dobrovolsky


Mikhail Dolivo-Dobrovolsky
Mikhail Osipovich Dolivo-Dobrovolsky

Mikhail Osipovich Dolivo-Dobrovolsky (Russian: Михаил Осипович Доливо-Добровольский; German: Michail von Dolivo-Dobrowolsky or Michail Ossipowitsch Doliwo-Dobrowolski; Polish: Michał Doliwo-Dobrowolski; January 2 [O.S. December 21, 1861] 1862 in Gatchina near Saint Petersburg — November 15 [O.S. November 3] 1919 in Heidelberg, Germany), was a Russian engineer, electrician, and inventor. Born in a mixed family between a Polish noble family originating from Mazowsze, and a Russian noble family. Emigrated to Germany due to political persecution after the assassination of Alexander II of Russia (1881). He studied at the Darmstadt University of Technology (TH Darmstadt) in Germany. From 1887 he worked for AEG.

Dobrovolsky, age 22

One of the founders (the other one was Tesla) of three-phase systems. He developed the three-phase electrical generator and a three-phase electrical motor (1888) and studied star and delta connections. The triumph of the three-phase system was displayed in Europe at the International Electro-Technical Exhibition of 1891, where Dolivo-Dobrovolsky used this system to transmit electric power at the distance of 176 km with 75% efficiency. In 1891 he also created a three-phase transformer and short-circuited (squirrel-cage) induction motor. [1] [2]

He designed the world's first three-phase hydroelectric power plant in 1891. During his life he obtained over 60 patents.

In 1911 he received the honorary doctorate from the TH Darmstadt.

References

  1. ^ . Woodbank Communications Ltd.'s Electropaedia: "History of Batteries (and other things)"
  2. ^ Gerhard Neidhöfer: Michael von Dolivo-Dobrowolsky und der Drehstrom. Geschichte der Elektrotechnik VDE-Buchreihe, Volume 9, VDE VERLAG, Berlin Offenbach, ISBN 978-3-8007-3115-2.

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Dobrovolsky — Dobrovolsky, sometimes spelled Dobrovolskiy or Dobrovolski (Russian: Добровольский), or Dobrovolskaya (feminine; Добровольская), is a Russian surname and may refer to the following people: Anatoly Dobrovolsky (1910 1988), Ukrainian/Soviet… …   Wikipedia

  • Michail Ossipowitsch Doliwo-Dobrowolski — (besser bekannt als Michail von Dolivo Dobrowolsky; russisch Михаил Осипович Доливо Добровольский/ Michail Ossipowitsch Doliwo Dobrowolski; * 21. Dezember 1861jul./ 2. Januar  …   Deutsch Wikipedia

  • Alexandre von Bilderling — Article connexe : Famille von Bilderling. Le baron Alexandre von Bilderling (en russe : Александр Александрович Бильдерлинг ; Saint Pétersbourg, 1846 Tsarskoïe Selo, 1912) était un général de cavalerie de l armée impériale russe.… …   Wikipédia en Français

  • List of Russian people — The Millennium of Russia monument in Veliky Novgorod, featuring the statues and reliefs of the most celebrated people in the first 1000 years of Russian history …   Wikipedia

  • Russia — This article is about the current country. For other uses, see Russia (disambiguation). Russian Federation Российская Федерация Rossiyskaya Federatsiya …   Wikipedia

  • Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …   Wikipedia

  • Three-phase electric power — This article deals with where, how and why three phase is used. For information on the basic mathematics and principles of three phase, see three phase. Three phase electric power is a common method of alternating current electric power… …   Wikipedia

  • Induction motor — An induction motor (IM) is a type of asynchronous AC motor where power is supplied to the rotating device by means of electromagnetic induction. Other commonly used name is squirrel cage motor due to the fact that the rotor bars with short… …   Wikipedia

  • Y-Δ transform — For application in statistical mechanics see Yang Baxter equation. For the device which transforms three phase electric power without a neutral wire into three phase power with a neutral wire, see delta wye transformer. The Y Δ transform, also… …   Wikipedia

  • Doliwa coat of arms — Doliwa Battle cry: Doliwa Details Alternative names Doliwczyk, Dolwita, Tres Rosae Earliest menti …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.