Erik C Hatch

US Patent:

8247933, Aug 21, 2012

Filed:

Apr 29, 2009

Appl. No.:

12/432385

Inventors:

Dang Dinh Dang - Garden Grove CA, US
Erik Hatch - Cypress CA, US
Rolf Blissenbach - Rolling Hills Estates CA, US
Khiet Le - Mission Viejo CA, US
Jonathan Bird - Charlotte NC, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02K 9/00

US Classification:

310 54, 310 59

Abstract:

A permanent magnetic machine includes a stator body having a first end, a second end, and a plurality of generally radial slots formed therein for accepting a set of windings having a first set of end-turns at the first end and a second set of end-turns at the second end. The stator body has a plurality of channels adjacent to the slots and extending from the first end of the stator body to the second end of the stator body, wherein the channels are configured to allow the flow of a cooling fluid therethrough. A plurality of nozzles in fluid communication with the plurality of channels are configured to spray the cooling fluid onto the first and second set of end turns.

US Patent:

8258671, Sep 4, 2012

Filed:

May 20, 2009

Appl. No.:

12/469191

Inventors:

Erik Hatch - Cypress CA, US
Constantin C. Stancu - Anaheim CA, US
Peter J. Savagian - Bloomfield Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02K 1/22
H02K 1/06
H02K 15/00
H02K 15/02

US Classification:

3102611, 310216004, 310216005, 310216007, 29596, 29598

Abstract:

A rotor assembly is assembled by providing an elongated rectangular strip of material having a first edge and a second edge defining a width, cutting the elongated rectangular strip to form a first patterned strip having a first side corresponding to the first edge, winding the first patterned strip portion around the perimeter of the rotor core such that the first edge is adjacent to the perimeter and the patterned strip portion forms a continuous laminated ring structure. Two laminated ring structures can be cut from a single strip, thereby reducing waste material and forming a strong structure.

US Patent:

8390240, Mar 5, 2013

Filed:

Jun 11, 2008

Appl. No.:

12/137340

Inventors:

Constantin C. Stancu - Anaheim CA, US
Silva Hiti - Redondo Beach CA, US
Robert T. Dawsey - Torrance CA, US
Erik Hatch - Cypress CA, US
Matthew D. Laba - Oakland MI, US
Peter J. Savagian - Bloomfield Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02P 23/00

US Classification:

318799, 318727, 318772, 318823

Abstract:

Systems and methods are provided for an automotive drive system using an absolute position sensor for field-oriented control of an induction motor. An automotive drive system comprises an induction motor having a rotor, and a position sensor coupled to the induction motor. The position sensor is configured to sense an absolute angular position of the rotor. A processor may be coupled to the position sensor and configured to determine a relative angular position of the rotor based on a difference between the absolute angular position and an initial angular position obtained when the induction motor is started. A controller may be coupled to the induction motor and the processor and configured to provide field-oriented control of the induction motor based on the relative angular position of the rotor.

US Patent:

8497617, Jul 30, 2013

Filed:

Jul 15, 2009

Appl. No.:

12/503623

Inventors:

Dang Dinh Dang - Garden Grove CA, US
Rolf Blissenbach - Rolling Hills Estates CA, US
David Schauer - New Ulm MN, US
John Wattleworth - Mankato MN, US
Michael Milani - Rancho Palos Verdes CA, US
Erik Hatch - Cypress CA, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02K 3/00

US Classification:

310201, 310208, 310215

Abstract:

A stator includes a stator core, a plurality of slots, and a conductor. The plurality of slots are formed within the stator core. The conductor is disposed continuously within at least two of the plurality of openings.

US Patent:

8542085, Sep 24, 2013

Filed:

Feb 28, 2011

Appl. No.:

13/036652

Inventors:

Constantin C. Stancu - Torrance CA, US
Peter J. Savagian - Bloomfield Hills CA, US
Khwaja M. Rahman - Troy MI, US
Robert T. Dawsey - Torrance CA, US
Erik Hatch - Cypress CA, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01F 21/04
H01F 21/06
H02K 19/00
H02P 1/46

US Classification:

336115, 336119, 336120, 310160, 310162, 318700

Abstract:

A high frequency rotary transformer for an electrical machine includes a primary transformer component having a primary transformer winding, and a secondary transformer component having a secondary transformer winding. The primary transformer winding is configured to be coupled to a DC power source via a DC to AC converter. The secondary transformer winding is configured to be coupled to a winding of the rotor. Each of the primary and secondary transformer components are mechanically coupled to either the stator or the rotor. The secondary transformer component is configured to rotate with respect to the primary transformer component to produce a magnetic flux via the primary transformer winding and the secondary transformer winding.

US Patent:

20080105476, May 8, 2008

Filed:

Nov 6, 2006

Appl. No.:

11/556741

Inventors:

Mark D. Korich - Chino Hills CA, US
Mark L. Selogie - Manhattan Beach CA, US
Young Doo - La Palma CA, US
Erik Hatch - Cypress CA, US

International Classification:

H01R 27/00
B60K 6/36

US Classification:

180 652, 439 34, 903915

Abstract:

A vehicular power inverter connector assembly is provided. The assembly includes a housing, a plurality of first engagement formations on the housing shaped to mate with a plurality of inverter engagement formations on a vehicular power inverter, a plurality of second engagement formations on the housing shaped to mate with a plurality motor engagement formations on a vehicular motor, and a plurality of current sensors connected to the housing and configured to detect current flowing between the vehicular power inverter and the vehicular motor.

US Patent:

20110012466, Jan 20, 2011

Filed:

Jul 15, 2009

Appl. No.:

12/503683

Inventors:

ROLF BLISSENBACH - ROLLING HILLS ESTATES CA, US
DANG DINH DANG - GARDEN GROVE CA, US
ERIK HATCH - CYPRESS CA, US
MICHAEL MILANI - RANCHO PALOS VERDES CA, US
DAVID SCHAUER - NEW ULM MN, US
JOHN WATTLEWORTH - MANKATO MN, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

H02K 3/28
H02K 15/06

US Classification:

310195, 29596

Abstract:

Methods and apparatus are provided for stator assembly for use with an electric motor assembly. The stator assembly includes, but is not limited to a stator core that has an inner surface and a plurality of stator slots defined in the inner surface. A fractional slot winding having a plurality of conductors is coupled to the stator core. Each stator slot contains a group of the conductors arranged in a radially adjacent configuration. The groups of conductors in each of the stator slots together form a plurality of concentric rings of conductors. The conductors in each mixed group are arranged such that conductors carrying differing phases of electric current are arranged in a radially alternating configuration.

US Patent:

20110012467, Jan 20, 2011

Filed:

Jul 15, 2009

Appl. No.:

12/503692

Inventors:

ROLF BLISSENBACH - ROLLING HILLS ESTATES CA, US
DANG DINH DANG - GARDEN GROVE CA, US
ERIK HATCH - CYPRESS CA, US
MICHAEL MILANI - RANCHO PALOS VERDES CA, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

H02K 3/28
H02K 15/06

US Classification:

310195, 29596

Abstract:

A stator assembly for use with an electric motor includes, but is not limited to, a stator core having an inner surface and a plurality of open slots defined in the inner surface. The stator assembly also includes a winding having multiple conductors. The winding is coupled to the stator core such that a predetermined quantity of conductors is disposed within each open slot. The winding is configured to control a magnitude of a torque ripple produced by operation of the electric motor.