Brushless starter generator

Patent metadata

Field	Value
Publication number	US-9479019-B2
Application number	US-201213350853-A
Country	US
Kind code	B2
Filing date	Jan 16, 2012
Priority date	Jan 16, 2012
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A brushless starter generator includes a wound field generator having a rotor that includes a damper winding, wherein the damper winding includes a plurality of poles. Also included is at least one pole face disposed within each of the plurality of poles, wherein the at least one pole face comprises a slot opening. Further included is at least one damper bar relatively entirely filling the slot opening.

First claim

The invention claimed is:

1. A brushless starter generator comprising:
a rotor that includes a rotor body that defines a plurality of poles, wherein each of the plurality of poles includes at least one pole face to define a plurality of pole faces;
a plurality of slot openings defined by each of the plurality of pole faces; and
a plurality of damper bars supported by a respective laminate, wherein each of the damper bars completely fills a respective slot opening, the damper bars comprised of a soft ferromagnetic material.

2. The brushless starter generator of claim 1 , wherein the plurality of damper bars each comprise a first end and a second end.

3. The brushless starter generator of claim 2 , wherein the plurality of damper bars are operably coupled to a first end plate at the first end and a second end plate at the second end.

4. The brushless starter generator of claim 3 , wherein the first end plate and the second end plate are comprised of copper.

5. A brushless starter generator comprising:
a rotor that includes a rotor body that defines a plurality of poles, wherein each of the plurality of poles includes at least one pole face to define a plurality of pole faces;
a plurality of slot openings defined by each of the plurality of pole faces, each of the slot openings having a first portion and a second portion; and
a plurality of damper bars supported by a respective laminate, wherein each of the damper bars completely fills the second portion of a respective slot opening, the damper bars comprised of a soft ferromagnetic material.

Assignees

• Bangura John F
• Hamilton Sundstrand Corp

Inventors

• Bangura John F

Classifications

• H02K3/20

  for auxiliary purposes, e.g. damping or commutating · CPC title

• H02K19/10

  for multi-phase current · CPC title

• H02K19/22 Primary

  having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators · CPC title

• H02K3/16 Primary

  for auxiliary purposes, e.g. damping or commutating · CPC title