A large electrically excited synchronous generator

Bogi Bech Jensen (Inventor)

Research output: Patent

553 Downloads (Pure)


This invention relates to a large electrically excited synchronous generator (100), comprising a stator (101), and a rotor or rotor coreback (102) comprising an excitation coil (103) generating a magnetic field during use, wherein the rotor or rotor coreback (102) further comprises a plurality of poles (104), where each pole (104) comprises a pole leg (105) and a pole shoe (106) facing the stator (101), the plurality of poles (104) is arranged spaced apart and radially on the rotor or rotor coreback (102), and the magnetic polarity of a given pole is different than the magnetic polarity of its adjacent neighbouring poles. In this way, a large electrically excited synchronous generator (EESG) is provided that readily enables a relatively large number of poles, compared to a traditional EESG, since the excitation coil in this design provides MMF for all the poles, whereas in a traditional EESG each pole needs its own excitation coil, which limits the number of poles as each coil will take up too much space between the poles.
Original languageEnglish
IPCH02K1/24; H02K19/22; H02K3/04; H02K7/18
Patent numberWO2014198275
Filing date18/12/2014
Country/TerritoryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date11/06/2013
Priority numberEP20130171363
Publication statusPublished - 2014


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