Abstract:
PURPOSE: A hermetic sealing assembly and an electric device including the same are provided to protect a joint from all kinds of corrosion by coating the inner and outer surface of a joint of a sealing assembly. CONSTITUTION: A motor(20) comprises a rotor(30), a stator(40) and a sealing assembly(100). A sealing assembly comprises one or more joints and monolithic ceramic separators. A monolithic ceramic separator is arranged in a gap(50) between the rotor and the separator. The sealing assembly separates the rotor and the stator. The monolithic ceramic separator is mechanically separated from the stator. The monolithic ceramic separator is mechanically separated from the stator.
Abstract:
PROBLEM TO BE SOLVED: To provide a slip ring brush assembly with reliability and a small loss which has a uniform current carrying capability for the brush and the slip ring. SOLUTION: The assembly comprises at least one electrically conductive slip ring 12; at least one electrically conductive brush 14 for supplying a current to the at least one slip ring; and an electric or pressure actuator 22, driven by a vibration source 13. If necessary, the brush current can be shared by using inductance change or by selective coupling of rotor windings to the slip ring.
Abstract:
Un sistema (10) que comprende: un motor (20) que comprende un rotor (30); un estator (40); y un conjunto de estanqueidad (100) que comprende al menos una unión (120), y un separador cerámico monolítico (110) dispuesto en un espacio (50) entre el rotor (30) y el estator (40); en el que el conjunto de estanqueidad (100) aísla herméticamente el rotor (30) y el estator (40) que se caracteriza porque el separador (110) comprende una primera superficie (116) próxima al estator (40) y una segunda superficie(118) próxima al rotor (30), y en el que el sistema (10) comprende, además, un sistema de compensaciónde presión (70) dispuesto para controlar la diferencia entre la presión que actúa sobre la primera superficie(116) y la presión que actúa sobre la segunda superficie (118).
Abstract:
A synchronous machine (50) is disclosed that includes a rotor (54) coupled to a rotor cooling system (75); a stator (52) around the rotor and separated from the rotor by an annular gap (88) between the rotor and an inner surface of the stator, and a stator ventilation system (82, 108) separate and independent of the rotor cooling system.
Abstract:
An integrated electric-drive compressor system 1 utilizes a high frequency drive for powering the multi-pole pair motor 12. The electric motor and compressor 10 are housed in a common pressure casing 16. The electric motor has added permanent magnets for achieving higher ratings and higher speeds. Drive topologies for a high frequency power converter are discussed and include two and three level bridge converters taking from a three phase supply to provide a variable voltage, variable frequency output via rectification and inversion. There is provision to bypass a failed bridge.
Abstract:
Disclosed herein are magnetic bearings, armatures (2) for magnetic bearings, and methods for their production. In one embodiment, an armature (2) is disclose d. The armature (2) comprises a stack (14), having a first end and a second end, of insulating layers (8) and coated plates (6) disposed adjacent one another. A first compression collar (22) is disposed at the first end, a second compression collar (22) i s disposed at the second end, and a shaft (4) is disposed through the first and second compression collars (22) and the stack (14). The coated plates (6) comprise core plates (10) having a coating (12) disposed thereon, wherein the coating (12) comprises a materi al selected from the group consisting of a metal, a metal alloy, a metal oxide, an intermetallic compound, a multi-phase alloy, a solid solution, and combinations comprising at least one of the foregoing. In addition, magnetic bearings and methods for assembling armatures (2) are disclosed.
Abstract:
Rotor and stator assemblies that utilize magnetic bearings for supporting th e rotor shaft during operation can be suitably used in corrosive environments, such as sour gas. The rotor and stator assemblies include NACE compliant magnetic bearing arrangements for sour gas applications. In one embodiment, a rotor shaft assembly (100) for a magnetic bearing arrangement comprises a rotor shaft (102) forme d of a ferromagnetic material comprising a plurality of rotor laminations (104) disposed on the rotor shaft (102); and a barrier layer (106) formed on selected exposed surfaces of the rotor shaft 102, wherein the barrier layer (106) is effective to resist corrosion relative to the surface without the barrier layer (106).
Abstract:
Máquina eléctrica de corriente continua (14) configurada para funcionar en un modo motor, un modo generador, o ambos, que comprende: un terminal de máquina (31) configurado para conectar de manera eléctrica la máquina eléctrica de corriente continua (14) a una fuente de alimentación de corriente continua (30) o una carga eléctrica de corriente continua (28); un rotor (34) configurado para generar un campo magnético del rotor; y una pluralidad de celdas de conmutación (36A, 36B), estando las celdas de conmutación (36A, 36B) acopladas de manera eléctrica en serie entre sí, comprendiendo cada una de las celdas de conmutación (36A, 36B): un componente de devanado (44), que comprende: una primera parte (60A, 62A) acoplada de manera eléctrica entre un primer terminal (50) y un segundo terminal (54) del componente de devanado (44); y una segunda parte (60B, 62B) acoplada de manera eléctrica entre un tercer terminal (52) y el segundo terminal (54) del componente de devanado (44); un primer dispositivo de conmutación (42A) acoplado de manera eléctrica al primer terminal (50) del componente de devanado (44) y configurado para cerrarse cuando una primera tensión inducida a través de la primera parte (60A, 62A) del componente de devanado (44) por rotación del campo magnético del rotor es positiva; y un segundo dispositivo de conmutación (42B) se acopla de manera eléctrica al tercer terminal (52) del componente de devanado (44) y se configura para cerrarse cuando una segunda tensión inducida a través de la segunda parte (60B, 62B) del componente de devanado (44) por la rotación del campo magnético del rotor es negativa, en el que la polaridad de la primera tensión y de la segunda tensión son opuestas; en el que cada una de las celdas de conmutación (36A, 36B) comprende además: un primer terminal de celda (38) acoplado de manera eléctrica al primer dispositivo de conmutación (42A) y el segundo dispositivo de conmutación (42B); y un segundo terminal de celda (40) acoplado de manera eléctrica al segundo terminal (54) del componente de devanado (44); en el que el primer terminal de celda (38) de una primera de las celdas de conmutación (36A, 36B) en la serie se acopla de manera eléctrica al terminal de máquina (31) de la máquina eléctrica de corriente continua (14); y en el que el segundo terminal de celda (40) de la primera de las celdas de conmutación (36A, 36B) en la serie se acopla de manera eléctrica al primer terminal de celda (38) de una segunda de las celdas de conmutación (36A, 36B) en la serie.
Abstract:
A propulsion system includes a combustion engine, a propulsor, and an electric machine configured to either be driven by the combustion engine or configured to drive the propulsor. The electric machine defines an axis. The electric machine includes a rotor extending along and rotatable about the axis, and a stator having a plurality of winding assemblies, the plurality of winding assemblies spaced along the axis of the electric machine, each winding assembly operable with the rotor independently of an adjacent winding assembly during operation of the electric machine.
Abstract:
A compressor assembly (200) for use in transporting natural gas is provided. The assembly includes a natural gas compressor (202) comprising at least one stage of compression, a permanent magnet-type super-synchronous motor (204) coupled to the natural gas compressor for powering said compressor, and a housing (230), the compressor positioned within the housing, and the compressor configured to facilitate increasing a pressure of natural gas being transmitted.