An electric motor or generator

Patent metadata

Field	Value
Publication number	US-2016156253-A1
Application number	US-201414901166-A
Country	US
Kind code	A1
Filing date	Jun 20, 2014
Priority date	Jun 26, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

An electric motor or generator comprising a stator with at least one coil winding, wherein the stator includes a first surface having a section of the at least one coil winding extending in a direction away from the first surface, and a control module having a housing with a first side that is arranged to be mounted to the first surface of the stator, wherein the housing includes a first element for detecting current flow, and a control device for controlling current flow in the at least one coil winding based upon the current flow detected by the first element, wherein the section of the at least one coil winding that is arranged to extend away from the first surface is arranged to extend through an aperture formed on the first side of the housing for coupling to the control device, wherein the first element is mounted in the housing adjacent to the aperture.

First claim

1 . An electric motor or generator comprising a stator with at least one coil winding, wherein the stator includes a first surface having a section of the at least one coil winding extending in a direction away from the first surface, and a control module having a housing with a first side that is arranged to be mounted to the first surface of the stator, wherein the housing includes a first element for detecting current flow, and a control device for controlling current flow in the at least one coil winding based upon the current flow detected by the first element, wherein the section of the at least one coil winding that is arranged to extend away from the first surface is arranged to extend through an aperture formed on the first side of the housing for coupling to the control device, wherein the first element is mounted in the housing adjacent to the section of the at least one coil winding.

2 . An electric motor or generator according to claim 1 , wherein the first element is mounted in the housing adjacent to the aperture or adjacent to the control device.

3 . An electric motor or generator according to claim 1 , wherein the first element is mounted in the housing between the first side of the housing and the control device.

4 . An electric motor or generator according to claim 1 , wherein the at least one coil winding is arranged to extend in a direction substantially perpendicular away from the first surface of the stator.

5 . An electric motor or generator according to claim 1 , wherein the first element is arranged to extend substantially around the aperture.

6 . An electric motor or generator according to any claim 1 , wherein the first element includes a Hall sensor and an soft ferromagnet component.

7 . An electric motor or generator according to claim 6 , wherein the soft ferromagnet component is configured as a toroid with a section of the toroid replaced with the Hall sensor.

8 . An electric motor or generator according to claim 1 , wherein the section of the at least one coil winding that is arranged to extend through the aperture is arranged to extend through substantially the centre of the first element.

9 . An electric motor or generator according to claim 1 , wherein the first side of the housing includes a recess formed on the opposite surface to that mounted adjacent to the first surface of the stator for mounting the first element.

10 . An electric motor or generator according to claim 1 , wherein the control device is a circuit board having an inverter.

11 . An electric motor or generator according to claim 1 , wherein the stator includes a coil set arranged to produce a magnetic field of the motor, the coil set comprising a plurality of coil windings, wherein a section of each of the plurality of coil windings extend in a direction away from a first surface of the stator, wherein the section of each of the plurality of coil windings that are arranged to extend away from the first surface of the stator are arranged to extend through a respective aperture formed on the first side of the housing and an aperture formed in a respective first element for coupling to the control device.

12 . An electric motor or generator according to claim 1 , wherein the stator includes two coil sets arranged to produce a magnetic field of the motor, each coil set comprising a plurality of coil windings, wherein a section of each of the plurality of coil windings extend in a direction away from a first surface of the stator, wherein the section of each of the plurality of coil windings that are arranged to extend away from the first surface of the stator are arranged to extend through a respective aperture formed on the first side of the housing and an aperture formed in a respective first element for coupling to the control device, wherein the current flow in the plurality of coil windings of a first coil set is controlled via a first inverter mounted on the control device and the current flow in the plurality of coil windings of a second coil set is controlled via a second inverter mounted on the control device.

Assignees

• Protean Electric Ltd

Inventors

• Owen Geoffrey

Classifications

• H02K11/33 Primary

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H10W72/5475

  multiple bond wires connected to common bond pads at both ends of the wires · CPC title

• H02K29/08

  using magnetic effect devices, e.g. Hall-plates, magneto-resistors (H02K29/12 takes precedence) · CPC title

• B60L2220/16

  DC brushless machines · CPC title

• H02K21/22

  with magnets rotating around the armatures, e.g. flywheel magnetos · CPC title