More electric engine with regulated permanent magnet machines
AssigneeHamilton Sundstrand Corporation
InventorsGregory I. Rozman, Kevin P. Roy
Life of this patent
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Abstract
A generator and associated power supply system comprises a prime mover for driving a shaft to rotate. A pair of permanent magnets is associated with the rotating shaft. A first stator winding is associated with a first of said permanent magnets, with a customer DC bus for providing a first relatively low voltage to the customer DC bus. A second of said permanent magnets is associated with a second stator winding, and an engine accessory DC bus. The engine accessory DC bus provides power to a motor controller and associated accessory motors associated with the prime mover. The engine accessory DC bus is provided with a second relatively high voltage from the second stator winding.
Claims10
A generator and associated power supply system comprising:
- a prime mover for driving a shaft to rotate;
- at least a pair of permanent magnets associated with said shaft;
- a first stator winding associated with a first of said permanent magnets, said first stator winding associated with a customer DC bus, and providing a first relatively low voltage to said customer DC bus;
- and
- a second of said permanent magnets being associated with a second set of stator winding, and communicating with an engine accessory DC bus, said engine accessory DC bus providing power to a motor controller and an associated motor for an accessory associated with said prime mover, said engine accessory DC bus being provided with a second relatively high voltage from said second stator windings.
A generator and associated power supply system comprising:
- a prime mover for driving a shaft to rotate;
- at least a pair of permanent magnets associated with said shaft;
- a first stator winding associated with a first of said permanent magnets, said first stator winding associated with a customer DC bus, and providing a first relatively low voltage to said customer DC bus;
- a second of said permanent magnets being associated with a second set of stator winding, and communicating with an engine accessory DC bus, said engine accessory DC bus providing power to a plurality of motor controllers and associated motors for accessories associated with said prime mover, and including at least a fuel pump motor and an oil pump motor, said engine accessory DC bus being provided with a second relatively high voltage from said second stator windings;
- said prime mover being a gas turbine engine, said customer DC bus being associated with components on an airplane;
- both of said windings ultimately communicate with a bi-directional DC/DC converter, that allows the power from said first stator winding to be also directed to said engine accessory DC bus, and allows the power from said second stator winding to be selectively sent to said customer DC bus, as necessary;
- and
- said first voltage being on the order of 28 volts and said second voltage being on the order of 270 volts.
Dependencies are inferred from the claim text.