Gisbert Kapp

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Gisbert Kapp (center of the picture, between Emil Rathenau and Marcel Depréz ) visits the hydropower plant in Lauffen am Neckar on the occasion of the electrical engineering exhibition

Gisbert Johann Eduard Kapp (born September 2, 1852 in Mauer near Vienna , Austria , † August 10, 1922 in Birmingham , Great Britain ) was an Austro-British electrical engineer. He was a professor of electrical engineering at the University of Birmingham .

Live and act

When Gisbert Kapp was four years old, his father died. His mother Louisa, b. Young (1829-1919) became a famous opera singer as Louisa Cappiani . He trained as a mechanical engineer in Vienna. In 1875 he went to England, where he worked at Gwynnes Pumps in Hammersmith. In 1879 he became the foreign representative of Hornsby & Co and traveled extensively across Europe.

In 1881 he attended the World's Fair in Paris and decided to pursue a career in electrical engineering. He received British citizenship. From 1882 to 1884 he was director of the company RE Crompton & Co. in Chelmsford, which was engaged in the construction of electrotechnical articles and which, under his leadership, developed the knowledge of the brothers Edward (chief engineer at Mather & Platt ) and John Hopkinson (Hopkinson's law; 1886) for exploited the construction of electrotechnical machines.

He married Teresa Krall (* 1864) from Vienna. On August 2, 1885, their first son Reginald Otto Kapp was born in Brentwood , Essex. Norman was born in 1887. In 1885 he started his own business as a consulting engineer in London, managed the development of numerous important companies and developed the dynamo design named after him (Kapp's dynamo design), after which DC machines were subsequently manufactured on the continent and in America.

His treatises and those of the Hopkinson brothers provided information about the most favorable iron and copper ratios in electrical machines and made it possible to manufacture machines that convert over 90% of mechanical energy into electrical energy (cf. Johann Kravogl 1867: 20%). It also gave you the means to calculate machines in advance. In 1894 he was elected Secretary General of the newly founded VDE and moved to Berlin-Charlottenburg . Here he played a key role in drawing up the association's safety regulations.

He completed his habilitation in electrical engineering at the Technical University of Berlin-Charlottenburg and was appointed first professor of electrical engineering at the University of Birmingham in 1905. He did a great job working out the basics for the calculation and construction of dynamo machines and alternating current transformers ( Kapp's triangle ) and was one of the first to recognize the importance of alternating current.

In 1975 the Kappgasse in Vienna- Landstrasse (3rd district) was named after him. In 1905 he was awarded an honorary doctorate by the Technical University of Dresden .

Inventions

  • Automatic voltage regulation of the dynamos
  • AC power distribution with constant voltage
  • Suction dynamo for the return line electr. Lanes
  • Phase shifter (vibrator) etc.

Publications

  • Electric Transmission of Energy ; 1886, German: Electric power transmission ; 1891
  • Alternate - Current Machinery ; 1889, German: Transformers for alternating current and three-phase current ; 1895
  • Dynamos, Alternators and Transformers ; 1893, German 1894
  • Predestination of the Characteristic of a Dynamo ; German: dynamo machines for direct and alternating current ; 1894,
  • Modern Dynamos and their Engines ; German: Electromechan. Constructions ; 1898
  • AC transformers ; In: Historical representations from electrical engineering, Vol. 1, 1922
  • About the prediction of the voltage drop in transformers ; ibid
  • Transformers for single and multiphase currents: a treatise on their theory, construction, and use ; (3rd ed. Rev. By Reginald O. Kapp.); London, Pitman, 1925
  • AC and Three-phase Transformers: A Presentation of Their Theory, Construction and Application ; Berlin, 1907
  • The principles of electrical engineering and their application ; London, Arnold, 1916
  • Electricity ; London, Williams & Norgate , 1912
  • Standards, regulations and principles of the Association of German Electrical Engineers, entered. Association ; Berlin, Springer, 1904
  • Electromechanical constructions: a collection of construction examples and calculations of machines and apparatus for heavy current ; (2nd, combined and extended edition - Berlin: Springer, 1902)
  • Alternating electrical currents ; Leipzig, Leiner, 1900

literature

Web links

Individual evidence

  1. ↑ http://digital.library.upenn.edu/women/eagle/congress/cappiani.html
  2. ↑ Honorary doctoral students of the TH / TU Dresden. Technical University of Dresden, accessed on February 6, 2015 .
personal data
SURNAME Kapp, Gisbert
ALTERNATIVE NAMES Kapp, Gisbert Johann Eduard (full name)
BRIEF DESCRIPTION Austrian-British electrical engineer
DATE OF BIRTH September 2, 1852
PLACE OF BIRTH Wall near Vienna , Austria
DATE OF DEATH August 10, 1922
Place of death Birmingham