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Salient pole electrical machine
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- Felicetti, Roberto, 1972- (author)
- Uppsala universitet,Elektricitetslära,Hydropower Group
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- Lundin, Urban, 1972- (author)
- Uppsala universitet,Elektricitetslära,Hydropower Group
- (creator_code:org_t)
- 2022
- English.
- Patent (pop. science, debate, etc.)
Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- asynchonous start
- salient pole rotor
- synchronous machine
- thermal stress
- torque ripple
Publication and Content Type
- pop (subject category)
- pat (subject category)
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