Salient pole electrical machine

Felicetti, Roberto,1972-Uppsala universitet,Elektricitetslära,Hydropower Group (författare)

An electrical machine (1) comprises a stator (20) having armature windings (24), a rotor (10) having salient poles (12) and being rotably arranged with respect to the stator (20), and a rotor excitation system (30). The rotor excitation system (30) has a rotor winding arrangement (14), a rotor power supply (34) for exciting the salient poles (12), and a rotor driving unit (32) configured to control currents provided to the rotor winding arrangement (14). In a first operation mode, the rotor excitation system (30) is sconfigured for providing a rotating magnetic field by supplying alternating currents to the rotor winding arrangement (14), while the armature windings (24) being short-circuited or closed on external resistors. A method for operating an electrical machine is also disclosed.

Lundin, Urban,1972-Uppsala universitet,Elektricitetslära,Hydropower Group(Swepub:uu)urbanlun (författare)
Uppsala universitetElektricitetslära (creator_code:org_t)

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