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Equipment for high-speed sleeveless rotors

A rotor, high-speed technology, applied in the field of equipment and systems of sleeveless high-speed engine starter/generator rotors, can solve the problems of increasing the air gap distance, increasing the weight of the rotor assembly, and reducing the magnetic efficiency of the machine.

Active Publication Date: 2015-08-05
GE AVIATION SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the rotor closure sleeve also increases the assembled weight of the rotor, and thus the synchronous machine, and increases the air gap distance between the main rotor and the stator, thereby reducing the magnetic efficiency of the machine

Method used

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  • Equipment for high-speed sleeveless rotors
  • Equipment for high-speed sleeveless rotors
  • Equipment for high-speed sleeveless rotors

Examples

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Embodiment Construction

[0071] The following detailed description illustrates embodiments of the invention by way of example and not limitation. The present invention is expected to have broad application to rotating machinery in industrial, commercial and domestic applications.

[0072] As used herein, an element or step presented in the singular and preceded by the word "a" should be understood as not excluding plural elements or steps, unless such exclusion is explicitly stated. Furthermore, references to "one embodiment" of the invention are not intended to be interpreted as excluding the existence of another embodiment also having the recited features.

[0073] figure 1 Is a schematic electrical diagram of an engine starter / generator (ES / G) assembly 100 including a main generator 102 , a permanent magnet generator (PMG) 104 and an exciter 106 according to an exemplary embodiment of the present invention. In the exemplary embodiment, ES / G assembly 100 includes rotor assembly 106 that includes ...

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Abstract

A high-speed sleeveless rotor for an electric machine is provided. The rotor includes a shaft (108) rotatable about a longitudinal axis, and a rotor core (148) circumscribing at least a portion of the shaft, the rotor core including an axially oriented slot (306), the slot including a radially outer slot opening, a radially inner slot floor (320,604), and a slot sidewall extending therebetween, the slot floor including a topstick attachment member (322) extending radially outward from the slot floor and configured to engage a topstick (316) positioned in the slot opening (318), the slot sidewall comprising a shoulder configured to engage the topstick, preventing radially outward movement of the topstick.

Description

technical field [0001] The field of the invention relates generally to synchronous machines for aircraft engines, and more particularly to apparatus and systems for sleeveless high speed engine starter / generator rotors. Background technique [0002] At least some known synchronous machine rotors rotate at high rotational rates. The centrifugal force acting on a component accommodated in the rotor is related to the mass of the component, the rotational speed of the rotor and the distance from the center of rotation of the rotor to the component. To contain the rotor components within the rotor casing, known rotors utilize stacked laminations of the rotor and sleeves into which the components are pressed. The rotor closure sleeve maintains rotor stresses at acceptable levels. However, the rotor closure sleeve also increases the assembled weight of the rotor, and thus the synchronous machine, and increases the air gap distance between the main rotor and the stator, reducing t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22H02K1/32H02K1/26H02K1/28
CPCH02K9/19H02K19/38H02K3/527H02K1/325H02K9/197
Inventor J·奇沃特X·贾N·K·奥斯丁
Owner GE AVIATION SYST LLC
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