Daniel W Shafer

6900607, May 31, 2005

Dec 11, 2001

10/013933

Julie A. Kleinau - Bay City MI, US
Steven J. Collier-Hallman - Frankenmuth MI, US
Ashok Chandy - Fenton MI, US
Ravindra P. Patankar - Chassell MI, US
Daniel W. Shafer - Flushing MI, US
Jeffery A. Zuraski - Saginaw MI, US

Delphi Technologies, Inc. - Troy MI

H02P007/00
H02H005/04
B62D011/06
B62D006/00

318432, 318783, 318472, 388934, 180446, 701 42

A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller responsive to at least one of: a current sensor, and a temperature sensor. Where the controller executes a parameter estimation process, which is responsive to at least one of: a current value, a torque command and the resultant of the parameter estimation process representing an estimated parameter of the electric machine. The parameter estimation includes a method for estimating a temperature of the electric machine comprising: a temperature sensor operatively connected to and transmitting a temperature signal corresponding to a measured temperature to a controller, which executes a temperature estimation process responsive to a temperature signal from a temperature sensor.

7071649, Jul 4, 2006

Dec 11, 2001

10/013914

Daniel W. Shafer - Flushing MI, US
Julie A. Kleinau - Bay City MI, US
Jeffery A. Zuraski - Saginaw MI, US

Delphi Technologies, Inc. - Troy MI

H02P 5/04
H02P 7/08

318783, 318708, 318788, 318791

A method and system for estimating a temperature of an electric machine comprising obtaining a temperature value responsive to a temperature signal from a temperature sensor, the temperature sensor is operatively connected to and transmitting the temperature signal corresponding to a measured temperature to a controller. The controller executes a temperature estimation process; and is operatively connected to a switching device, where the switching device is operatively connected between the electric machine and a power source, the switching device being responsive to the controller. Also disclosed is a storage medium encoded with a machine-readable computer program code for estimating an operating temperature of an electric machine. The storage medium includes instructions for causing controller to implement method for estimating an operating temperature of an electric machine as described above. Additionally disclosed is a computer data signal embodied in a carrier wave for estimating an operating temperature of an electric machine.

7119530, Oct 10, 2006

Feb 4, 2005

11/052485

Sayeed A. Mir - Saginaw MI, US
Paul M. Fisher - Saginaw MI, US
Daniel W. Shafer - Linden MI, US
Samuel J. Underwood - Amiens, FR

Delphi Technologies, Inc. - Troy MI

G01R 13/14
H02P 5/40

324 7615, 318801, 318803

A method and system for obtaining motor current measurements from a DC bus current of an inverter that drives a pulse width modulated electric machine is disclosed. The method may include sensing a DC bus current in a sensor located on a bus of an inverter; sampling the DC bus current via an analog to digital converter wherein the sampling is controlled by sampling timing that is based on a pulse width modulation timing of the inverter; and determining three AC phase currents of the motor from the sampled DC bus current.

7576506, Aug 18, 2009

Dec 22, 2006

11/615232

Julie A. Kleinau - Bay City MI, US
Jeffrey A. Zuraski - Saginaw MI, US
Daniel W. Shafer - Flushing MI, US

Delphi Technologies, Inc. - Troy MI

G05D 23/00

318471, 318473, 361 25, 361 938

A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller responsive to at least one of: a current sensor, and a temperature sensor. Where the controller executes a parameter estimation process, which is responsive to at least one of: a current value and a temperature estimate and the resultant of the parameter estimation process representing an estimated parameter of the electric machine. The parameter estimation includes a method for estimating a temperature of the electric machine comprising: the temperature sensor operatively connected to and transmitting a temperature signal corresponding to a measured temperature to a controller, which executes the temperature estimation process responsive to a temperature signal from the temperature sensor.

8051945, Nov 8, 2011

May 4, 2009

12/434891

Steven J. Collier-Hallman - Frankenmuth MI, US
Daniel W. Shafer - Saint Charles MI, US

B62D 5/04

180446, 180443

An electric power steering system for a vehicle includes a motor for providing assistance in turning the wheels of the vehicle. The motor is electrically connected to a controller. The controller includes a power device, such as a power transistor, electrically connected to the motor to variably provide electric power to the motor as needed. The controller also includes a gate drive device electrically connected to the power device for regulating operation the power device. A shutdown mechanism is electrically connected between the gate drive device and a power input. In the event of a fault, the shutdown mechanism isolates electrical power from the gate drive device. This prevents the power device from providing electric power to the power steering motor.

20030076064, Apr 24, 2003

Dec 11, 2001

10/013905

Julie Kleinau - Bay City MI, US
Jeffery Zuraski - Saginaw MI, US
Daniel Shafer - Flushing MI, US

G05B019/10

318/567000

A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller responsive to at least one of: a current sensor, and a temperature sensor. Where the controller executes a parameter estimation process, which is responsive to at least one of: a current value and a temperature estimate and the resultant of the parameter estimation process representing an estimated parameter of the electric machine. The parameter estimation includes a method for estimating a temperature of the electric machine comprising: the temperature sensor operatively connected to and transmitting a temperature signal corresponding to a measured temperature to a controller, which executes the temperature estimation process responsive to a temperature signal from the temperature sensor.