Electric machine stator including keybars
AssigneeGeneral Electric Company
InventorsManoj Ramprasad Shah, Sameh Ramadan Salem
Life of this patent
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Abstract
Keybar voltages in electric machines are reduced by electromagnetically optimizing the positioning of the keybars with respect to stator winding phase belts, the selection of the number of keybars, the selection of the number of stator slots, and/or the direction of rotation of a rotor with respect to the stator.
Claims17
A method for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the method comprising:
- determining electromagnetic effects of adjusting positions of the keybars with respect to positions of the phase belts;
- and
- selecting a position of the keybars with respect to a position of the phase belts which provides minimal adverse electromagnetic effects.
A method for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the method comprising:
- determining electromagnetic effects of adjusting positions of the keybars with respect to positions of the phase belts, adjusting the number of keybars, and adjusting the number of stator slots;
- and
- selecting a position of the keybars with respect to a position of the phase belts, a number of the keybars, and a number of stator slots which collectively provide minimal adverse electromagnetic effects.
A method for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the method comprising:
- determining electromagnetic effects of adjusting the number of keybars;
- and
- selecting a number of the keybars which provides minimal adverse electromagnetic effects.
A method for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the method comprising:
- determining electromagnetic effects of adjusting the number of stator slots;
- and
- selecting a number of the stator slots which provides minimal adverse electromagnetic effects.
A method for operating an electric machine comprising a rotor and a stator comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the method comprising selecting a direction of rotation of the rotor which provides minimal adverse electromagnetic effects on the keybars.
A system for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the system comprising:
- means for determining electromagnetic effects of adjusting positions of the keybars with respect to positions of the phase belts;
- and
- means for selecting a position of the keybars with respect to a position of the phase belts which provides minimal adverse electromagnetic effects.
A system for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the system comprising:
- means for determining electromagnetic effects of adjusting positions of the keybars with respect to positions of the phase belts, adjusting the number of keybars, and adjusting the number of stator slots;
- and
- means for selecting a position of the keybars with respect to a position of the phase belts, a number of the keybars, and a number of stator slots which collectively provides minimal adverse electromagnetic effects.
A system for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the system comprising:
- means for determining electromagnetic effects of adjusting the number of keybars;
- and
- means for selecting a number of the keybars which provides minimal adverse electromagnetic effects.
A system for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the system comprising:
- means for determining electromagnetic effects of adjusting the number of stator slots;
- and
- means for selecting a number of the stator slots which provides minimal adverse electromagnetic effects.
A system for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the system comprising a computer for performing simulations to determine electromagnetic effects of adjusting positions of the keybars with respect to positions of the phase belts.
A system for designing a stator for an electric machine comprising lamination segments coupled to a stator frame by keybars and stator winding phase belts within stator slots of the lamination segments, the system comprising a computer for performing simulations to determine electromagnetic effects of adjusting positions of the keybars with respect to positions of the phase belts, adjusting the number of keybars, and adjusting the number of stator slots.
Dependencies are inferred from the claim text.