Stator winding arrangement for an electrical machine having series connected short and long windings
AssigneeROLLS-ROYCE plc
InventorsDavid Reginald Trainer, Konstantinos Kampisios, Omar Fadhel Jasim, Ellis Fui Hen Chong, John James Anthony Cullen
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Abstract
Described is an electrical machine, including: a rotor having a magnetic flux source mounted thereto; a stator winding arrangement having a first set of electrical connections to provide a first output channel, and a second set of electrical connections to provide a second output channel, the first and second channels being electrically out of phase, wherein the stator winding arrangement is constructed from a plurality of winding portions which are connected in electrical series.
Claims11
An electrical system comprising:
- an electrical machine, having:
- a rotor having a magnetic flux source mounted thereto;
- and
- a stator winding arrangement having a first set of electrical connections to provide a first output channel, and a second set of electrical connections to provide a second output channel, the first and second channels being electrically out of phase, wherein
- the stator winding arrangement is constructed from a plurality of winding portions comprising a plurality of alternately connected long and short windings connected in electrical series, wherein adjacent long and short windings have different phases,
- each output channel is connected to a load or network, the output channels being polyphase and the short windings providing the phase difference between the two output channels in that each phase of the first channel is taken from one end of a short winding, and each phase of the second channel is taken from the respective other end of the short winding, and
- the stator includes slots, and turns of each long winding of a phase are located in the same slot as turns of the one short winding of the same phase.
An electrical system comprising:
- an electrical machine, having:
- a rotor having a magnetic flux source mounted thereto;
- a stator winding arrangement having a first set of electrical connections to provide a first output channel, and a second set of electrical connections to provide a second output channel, the first and second channels being electrically out of phase;
- and
- a third channel,
- wherein
- the stator winding arrangement is constructed from a plurality of winding portions comprising a plurality of alternately connected long and short windings connected in electrical series,
- each output channel is connected to a load or network, the output channels being polyphase and the short windings providing the phase difference between the two output channels in that each phase of the first channel is taken from one end of a short winding, and each phase of the second channel is taken from the respective other end of the short winding,
- the stator includes slots, and turns of each long winding of a phase are located in the same slot as turns of the one short winding of the same phase, and
- the third channel is taken from the midpoint of the short winding for each phase.
Dependencies are inferred from the claim text.