摘要:
A system is described that includes a turbine engine including an engine fan including one or more variable-pitch blades driven by a shaft, which rotates at a rotational speed which depends on a pitch of the one or more variable-pitch blades of the engine fan. The system further includes a generator configured to produce alternating-current (AC) electricity at a particular frequency relative to the rotational speed of the shaft. The system also includes a propulsor, which includes a propulsor motor and a propulsor fan. The propulsor motor is configured to drive, based on the AC electricity produced by the generator, the propulsor fan. The system includes a controller configured to control the particular frequency of the AC electricity by at least controlling the pitch of the one or more variable-pitch blades of the engine fan and thereby the rotational speed of the generator.
摘要:
An electrical generator for extraction of electrical power from a gas turbine engine (10) includes a rotor portion (22) and a stator portion (24) disposed within a booster cavity (14) of the gas turbine engine (10). The rotor portion (22) is rotatably supported about the stator portion (24). The stator portion (24) rigidly is supported within the booster cavity (14). The rotor portion (22) has a plurality of poles circumferentially arranged opposite the stator portion (24). The stator portion (24) includes a plurality of coil portions (28) disposed about an outer periphery of the stator portion (24) adjacent to the stator portion (24). The stator (24) and rotor portions (22) are configured to generate electrical power when the rotor portion (22) is rotated about the stator portion (24) by a shaft of the gas turbine engine (10) to induce electrical currents in the coil portions (28). The electrical generator extracts electric power from the turbine engine to supplement primary electrical generation sources of the engine (10).
摘要:
A system comprises a turbine engine (102) having a first spool (108) connected to a compressor portion (104), a power turbine spool (110), a first generator (112) connected to the power turbine spool (110), and a second generator (116) connected to the first spool (108).
摘要:
A system comprises a turbine engine (102) having a first spool (108) connected to a compressor portion (104), a power turbine spool (110), a first generator (112) connected to the power turbine spool (110), and a second generator (116) connected to the first spool (108).
摘要:
Die vorliegende Erfindung betrifft einen Elektromotor (4) zur Förderung von Medien, wobei dieser einen Stator (4b), einen Rotor (4a) mit einem Rotormagneten (4c) sowie zwischen Stator und Rotor eine Medien-Durchlassöffnung (4a) aufweist. Der kleinste Innendurchmesser (d S ) des Stators ist 1,5- bis 8-mal so groß ist wie der größte Außendurchmesser (d RM ) des Rotormagneten. Mit dem vorliegenden Elektromotor wird eine betriebssichere Förderung von Medien zu geringen Kosten und bei kleinem Wartungsaufwand erreicht.
摘要:
A jet engine assembly includes a jet engine having at least one spool and a generator. The generator comprising a rotor and a stator, with the rotor being operably coupled to the at least one spool, and an electronic commutator controlling the rotation of a magnetic field of the rotor such that the electric motor generates electricity. Also, a method of generating electricity from a generator having a stator and a rotor, the method comprising controlling a rotation of a magnetic field to generate electricity.
摘要:
An aircraft engine assembly includes an engine housing 32, a low pressure spool 24 disposed within the engine housing, and a high pressure spool 26 disposed within the engine housing. Also included is a flux-switching machine 40 disposed within the engine housing, the flux-switching machine comprising a rotor 42, a stator 44, a field winding 50 and an armature winding 52, the flux-switching machine configured to generate power for the aircraft power system. Also provided is a method of generating electric energy for an aircraft power system. The method includes energizing a field winding set of a flux-switching machine disposed entirely within an engine housing of the aircraft engine. The method also includes outputting electrical energy to an electrical system of the aircraft with a three phase armature winding of the flux-switching machine to provide electrical power to at least one aircraft component.
摘要:
An electrical power generation system (100) for an aircraft gas turbine engine (10). The system comprises an alternating current electrical generator (110) having a rotor (114) comprising a plurality of electromagnetic rotor windings (118) and a stator (124) comprising a plurality of electrical stator windings (126). The rotor (114) is mechanically coupled to a shaft (36) of the gas turbine engine (10) by a transmission system (129). The electrical generator (110) further includes an electrical output frequency controller (130), a torque sensor arrangement configured to determine a torque imposed on the transmission system (129) by the generator (110) and a controller (112) configured to operate the electrical power generation system in first mode and second modes. In the first mode, the frequency of the electrical power output of the electrical generator (110) is controlled by the electrical output frequency controller (130) to lie within predetermined limits, and a reduced idle signal is provided to a gas turbine engine controller (132). In the second mode, the frequency of the electrical power output of the electrical generator (132) is not controlled by the electrical output frequency controller (130) and an increased idle signal is provided to the gas turbine engine controller (132). The electrical generator controller (112) is configured to operate the electrical power generation system (100) in the first mode when the torque is below a predetermined limit, and in the second mode when the torque is above a predetermined limit.