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Browse Prior Art Database

Magnetically Conductive Motor Stator Insulators

IP.com Disclosure Number: IPCOM000101857D
Original Publication Date: 1990-Sep-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Young, JT: AUTHOR

Abstract

Proposed is a construction improvement for electric motors and generators to increase internal flux efficiency with consequent benefit in torque or generator output. Suggested new materials can replace conventional insulating and mechanical parts in both stators and rotors.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 67% of the total text.

Magnetically Conductive Motor Stator Insulators

       Proposed is a construction improvement for electric
motors and generators to increase internal flux efficiency with
consequent benefit in torque or generator output.  Suggested new
materials can replace conventional insulating and mechanical parts in
both stators and rotors.

      An embodiment of the invention is described by way of example
with reference to the figure.  It is a brushless motor (or generator)
having a stator comprising four segments 1 each being a stack of
laminations of suitable metal, such as alloy steel conventionally
shaped and constructed to contain axially within its center a
magnetized rotor 2. Rotor 2 is supported in end bearings (not shown)
by an axial spindle 3 that maintains an annular clearance 4 with the
inner ends of stator segments 1 and the circumference of rotor 2.

      Each stator segment 1 is conventionally wound with a conducting
coil 5 (only one shown) appropriately connected to other stator
windings and power supply phases to drive the stator in continuous
rotation.  Between the winding 5 and segments 1 is a space 6 to
prevent the insulation of winding 5 being damaged by the sharp
corners of the lamination stack edges 1 and short circuiting to
ground. Spaces 7 also exist between segments 1.  Such spaces (6 and
7) are conventionally filled with insulation material and/or
mechanical construction fixtures which contribute undesirable
magnetic reluctance to the sta...