Method for manufacture of electric motor

Patent metadata

Field	Value
Publication number	US-11128204-B2
Application number	US-201916684449-A
Country	US
Kind code	B2
Filing date	Nov 14, 2019
Priority date	May 19, 2016
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

An electric motor is disclosed having a detachable stator tooth. In some implementations, coil windings of the electric motor may be coupled to one or more drivers independently of other coil windings. A method of repairing and manufacturing an electric motor having a detachable stator tooth is also disclosed.

First claim

What is claimed is:

1. A method of manufacturing an electric motor, the method comprising:
providing a plurality of stator teeth detached from a stator of the electric motor;
winding at least first and second coil windings about a first stator tooth of the plurality of stator teeth; and
coupling the at least first and second coil windings to a driver circuit of the electric motor independently of at least one coil winding wound about a second stator tooth of the plurality of stator teeth, wherein the second coil winding to be arranged to combine a first current from discharge of at least one charge storage device of the driver circuit through the second coil winding and a second current to be generated in the second winding responsive to magnetic energy from the first coil winding,
wherein one or more of the plurality of stator teeth are individually detachably coupleable to at least a portion of the stator to enable replacement of an individual stator tooth of the one or more of the plurality of stator teeth during servicing of the electric motor after installation of the electric motor.

2. The method of claim 1 further comprising attaching the detached stator teeth to the stator of the electric motor.

3. The method of claim 1 further comprising providing at least one replacement stator tooth comprising at least one coil winding.

4. The method of claim 1 , and further comprising arranging the first and second coil windings of the first stator tooth relative the at least one coil winding wound about the second stator tooth to enable detachable replacement of the first stator tooth, wherein the first stator tooth and the second stator tooth are to be adjacently attached to the stator.

5. The method of claim 1 , and further comprising arranging the stator and a rotor for an air gap separating aligned stator teeth and rotor teeth of between approximately 0.5 mm and approximately 3 mm.

6. The method of claim 1 , and further comprising detachably coupling one or more of the plurality of stator teeth to the stator via one or more fasteners.

7. The method of claim 1 , wherein the at least the first coil winding comprises copper.

8. The method of claim 1 , wherein the at least the first coil winding comprises aluminum.

9. The method of claim 1 , and further comprising electrically coupling a plurality of driver circuits with a plurality of detachably couplable pairs of coil windings to provide a one-to-one coupling of the plurality of driver circuits with the plurality of detachably coupleable pairs of coil windings.

10. A method of manufacturing an electric motor, the method comprising:
coupling at least first and second coil windings wound about a first stator tooth of a plurality of stator teeth to a driver circuit independently of at least one coil winding wound about a second stator tooth, wherein the second coil winding to be arranged to combine a first current from discharge of at least one charge storage device of the driver circuit through the second coil winding and a second current to be generated in the second winding responsive to magnetic energy from the first coil winding, wherein one or more of the plurality of stator teeth are individually detachably coupleable to at least a portion of a stator to enable replacement of an individual stator tooth of the one or more of the plurality of stator teeth during servicing of the electric motor after installation of the electric motor.

11. The method of claim 10 , and further comprising coupling a channel of the first stator tooth to the stator at a fastener.

12. The method of claim 10 , and further comprising detachably coupling the first stator tooth to the stator via at least one fastener at one or more ends of the the first stator tooth.

13. The method of claim 12 , wherein the at least the first stator tooth comprises a rigid structural member detachably coupleable to the at least one fastener.

14. The method of claim 10 , wherein the charge storage device is coupled to a switch to enable recapture of energy transmitted through the second coil winding.

15. The method of claim 10 , and further comprising:
detaching the first stator tooth from the stator while maintaining at least one other stator tooth of the plurality of stator teeth attached to the stator; and
detaching the first and second coil windings of the detached first stator tooth from the driver circuit while maintaining coil windings of the at least one other stator tooth of the plurality of stator teeth attached to one or more other driver circuits.

16. The method of claim 15 , and further comprising sending the detached first stator tooth comprising the detached first and second coil windings for refurbishing.

17. The method of claim 15 , and further comprising attaching a pair of previously presented coil windings to the driver circuit.

18. The method of claim 17 , and further comprising attaching a previously presented stator tooth comprising the pair of previously presented coil windings to the stator.

19. The method of claim 17 , further comprising attaching a previously presented stator tooth comprising the pair of previously presented coil windings to the stator of the electric motor.

20. The method of claim 10 , and further comprising individually attaching detached stator teeth to the stator of the electric motor.

21. The method of claim 10 , and further comprising providing at least one replacement stator tooth comprising at least one coil winding.

Assignees

• Advanced Risc Mach Ltd

Inventors

• Pietromonaco David Victor

Classifications

• H02K15/50 Primary

  Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38) · CPC title

• H02P25/18

  with arrangements for switching the windings, e.g. with mechanical switches or relays · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• H02K2213/12

  Machines characterised by the modularity of some components · CPC title

• H02K11/30

  Structural association with control circuits or drive circuits · CPC title