Hybrid surface magnet machine

Patent metadata

Field	Value
Publication number	US-10305408-B2
Application number	US-201816011119-A
Country	US
Kind code	B2
Filing date	Jun 18, 2018
Priority date	Mar 25, 2014
Publication date	May 28, 2019
Grant date	May 28, 2019

Abstract

A hybrid electrical machine containing surface mounted magnets which includes a magnetically permeable cylindrically shaped stator assembly having at least one stator winding formed about a plurality of stator teeth, a rotor assembly concentrically disposed within the stator assembly, including a magnetically permeable rotor backiron, a rotational drive mechanism coupled to the rotor backiron, and a plurality of protruding rotor poles, each including a magnetically permeable pole support assembly, a winding provided around the pole support assembly, and a radially magnetized permanent magnet assembly disposed about the pole support assembly.

First claim

The invention claimed is:

1. A machine comprising:
a rotor assembly concentrically disposed within a stator assembly, the rotor assembly comprising
a rotor backiron;
a drive mechanism coupled to the rotor backiron and configured to rotate in association with the rotor backiron, and
a plurality of rotor poles, each rotor pole comprising
a pole support assembly,
a winding provided around the pole support assembly, and
a magnet assembly disposed about the pole support assembly,
wherein the pole support assembly includes a T-shaped pole support, and
wherein the magnet assembly comprises a plurality of permanent magnets, wherein each permanent magnet of the plurality of permanent magnets is on each side of the T-shaped pole support, wherein the each permanent magnet of the plurality of permanent magnets is not in physical contact with the T-shaped pole support.

2. The machine of claim 1 , further comprising a spacer between each permanent magnet of the plurality of permanent magnets and the T-shaped pole support.

3. The machine of claim 1 , wherein the T-shaped pole support includes side bars.

4. The machine of claim 1 , wherein the rotor backiron is in a shape of a cylindrical body.

5. A machine comprising:
a rotor assembly concentrically disposed within a stator assembly, the rotor assembly comprising
a drive mechanism coupled to a rotor backiron, and
a plurality of rotor poles, wherein each rotor pole comprises
a magnet assembly disposed about a pole support assembly,
wherein the pole support assembly includes a T-shaped pole support, and
wherein the magnet assembly comprises a plurality of permanent magnets, wherein each permanent magnet of the plurality of permanent magnets is on each side of the T-shaped pole support, wherein the each permanent magnet of the plurality of permanent magnets is physically disjointed with the T-shaped pole support.

6. The machine of claim 5 , further comprising a spacer between each permanent magnet of the plurality of permanent magnets and the T-shaped pole support.

7. The machine of claim 5 , wherein the drive mechanism is configured to rotate in association with the rotor backiron.

8. The machine of claim 5 , wherein the rotor backiron is in a shape of a cylindrical body.

9. The machine of claim 5 , further comprising a winding around the pole support assembly.

10. The machine of claim 5 , wherein the T-shaped pole support includes side bars.

11. A machine comprising:
a rotor assembly disposed within a stator assembly, wherein the rotor assembly comprises:
a rotational drive mechanism coupled to a rotor backiron, and
a plurality of rotor poles, wherein each rotor pole comprises
a pole support assembly, wherein the pole support assembly comprises a pole body and a pole shoe, wherein the pole shoe comprises a plurality of recesses, and
a plurality of permanent magnets, wherein each permanent magnet of the plurality of permanent magnets is over each recess of the plurality of recesses of the pole shoe.

12. The machine of claim 11 , further comprising a spacer between each permanent magnet of the plurality of permanent magnets and a sidewall of a respective recess of the plurality of recesses.

13. The machine of claim 11 , wherein the drive mechanism is configured to rotate in association with the rotor backiron.

14. The machine of claim 11 , wherein the rotor backiron is in a shape of a cylindrical body.

15. The machine of claim 11 , further comprising a winding around the pole support assembly.

Assignees

• Purdue Research Foundation

Inventors

• Sudhoff Scott
• Pekarek Steve
• Laldin Omar Abdul

Classifications

• H02P25/024

  controlled by supply frequency · CPC title

• H02P9/14

  by variation of field (H02P9/08, H02P9/10 take precedence) · CPC title

• H02P23/009 Primary

  using field weakening · CPC title

• H02K16/02

  Machines with one stator and two {or more} rotors · CPC title

• H02K21/042

  with permanent magnets and field winding both rotating · CPC title