Michael C Harke

US Patent:

6822418, Nov 23, 2004

Filed:

Aug 21, 2003

Appl. No.:

10/645296

Inventors:

Michael Harke - Madison WI

Assignee:

International Rectifier Corporation - El Segundo CA

International Classification:

H02P 528

US Classification:

318807, 318700, 318727

Abstract:

A feedback response signal in a motor drive system in response to injection of a high frequency carrier signal provides information for determining motor position and demagnetization detection. The high frequency carrier signal excitation can be voltage or current based. The feed back signal is processed with various filtering techniques and phase detection to obtain the desired information. Both uniform and localized demagnetization of the motor is detected by examining the saturation saliency of the stator iron for a lack of position dependent information or large DC offsets. The technique provides good position information for the motor while providing an indication of motor health.

US Patent:

6967461, Nov 22, 2005

Filed:

Aug 31, 2004

Appl. No.:

10/930629

Inventors:

Albert L. Markunas - Roscoe IL, US
John F. Defenbaugh - Rockford IL, US
Michael Harke - Madison WI, US
Charles Romenesko - Roscoe IL, US
Daniel M. Saban - Rockford IL, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

H02P001/46

US Classification:

318700, 318723, 322 29

Abstract:

A system for enhancing the performance of a carrier insertion sensorless (CIS) position sensing system for a wound field synchronous machine that utilises the positively rotating components (+2ωt) of the carrier second harmonic currents that contain rotor position information before field excitation to serve as a north-south pole indicator that determines if the CIS system has locked onto the north or south pole of the rotor.

US Patent:

7986538, Jul 26, 2011

Filed:

Jun 3, 2008

Appl. No.:

12/156679

Inventors:

Michael C. Harke - Madison WI, US

Assignee:

Hamilton Sundstrand Corporation - Rockford IL

International Classification:

H02M 7/08
H02M 7/00

US Classification:

363 67, 363 84, 363125

Abstract:

A controller for a multi-level converter regulates the DC midpoint voltage of the multi-level converter by accounting, for the effect non-redundant switch states have on the DC midpoint current. The controller includes a DC bus regulator that monitors the DC output voltage and generates in response a commanded voltage vector. The duty cycle calculator is operably connected to receive the commanded voltage vector generated by the DC-bus regulator and to generate in response to the commanded voltage vector duty cycles associated with non-redundant switch states. The DC midpoint regulator is operably connected to receive the non-redundant duty cycles calculated by the duty cycle calculator and to generate in response a first midpoint current command that accounts for the effect the non-redundant switch states have on the midpoint current. Based, at least, in part, on the calculated effect the non-redundant switch states will have on the midpoint current, the DC midpoint regulator regulates the DC midpoint voltage of the multi-level rectifier to a desired value.

US Patent:

8310193, Nov 13, 2012

Filed:

Jan 12, 2010

Appl. No.:

12/685827

Inventors:

Michael C. Harke - Madison WI, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

G05B 13/00

US Classification:

318561, 318473, 31840022

Abstract:

A component intended for use in very low temperature situations has an electromechanical actuator with a control for an electric motor. The control receives a temperature signal indicative of a temperature being experienced by the electromechanical actuator. The control is operable to produce a current signal sent to the electric motor which will generate heat without significant torque. A method of operating the electromechanical actuator is also disclosed.

US Patent:

8362728, Jan 29, 2013

Filed:

Sep 15, 2010

Appl. No.:

12/882379

Inventors:

Dhaval Patel - Loves Park IL, US
Albert L. Markunas - Roscoe IL, US
Michael C. Harke - Madison WI, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

H02P 1/04
H02P 6/18

US Classification:

31840033, 318700, 318712, 318723

Abstract:

A method of operating a WFSM in a motoring mode determines a relative position of a PMG rotor with respect to the WFSM rotor. A PMG is coupled to the WFSM via a coupling shaft. A relative difference between the WFSM rotor position and the PMG rotor position is determined based on carrier injection sensorless (“CIS”) stimulation signals. The relative difference between the PMG rotor and the WFSM main machine in conjunction with the PMG rotor position is used to determine the WFSM rotor position during motoring operation of the main machine. A stator of the WFSM main machine is energized to maintain operation of the WFSM in response to the detected main rotor position.

US Patent:

20100063786, Mar 11, 2010

Filed:

Sep 11, 2008

Appl. No.:

12/208384

Inventors:

Michael C. Harke - Madison WI, US

International Classification:

G06G 7/48

US Classification:

703 6

Abstract:

A method of communication and interaction between multiple simulations of a complex simulation system, each simulation comprising a model of a physical subsystem or parameter of the complex simulation system, comprises the steps of: transmitting from at least one transmitting simulation an output of its model to generate a simulation output signal; attenuating the simulation output signal above a maximum desired communication frequency between the simulations to generate a corresponding filtered simulation output signal; sampling the filtered simulation output signal at a sampling rate with a frequency at least twice the maximum desired communication frequency to generate a corresponding sampled output signal; transferring the sampled output signal from the transmitting simulation to at least one receiving simulation; conditioning the sampled output signal to generate a simulation input signal; and transferring the simulation input signal to the model of the receiving simulation.

US Patent:

20110089884, Apr 21, 2011

Filed:

Oct 15, 2009

Appl. No.:

12/579592

Inventors:

Michael C. Harke - Madison WI, US

International Classification:

G05B 11/32

US Classification:

318625

Abstract:

A multi-actuator motion control system includes a control methodology that coordinates the motion of multiple actuators while limiting the force-fight between the actuators. Control logic is provided in a relative coordinate system that allows control of the mean actuator position. Force-fight between the actuators is decoupled from the actuator position by estimating load forces on the actuator using reduced-order observers.

US Patent:

6429616, Aug 6, 2002

Filed:

Mar 29, 2001

Appl. No.:

09/820487

Inventors:

Garold Paul Myers - Northville MI
Michael W. Degner - Farmington Hills MI
Michael Harke - Madison WI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

H02P 706

US Classification:

318459

Abstract:

An electric machine drive system uses an estimation of the DC bus voltage to improve machine drive control. The DC bus voltage is estimated by injecting a carrier signal into the machine drive and determining the magnitude of the positive sequence current component induced in the drive by the carrier signal. The measured magnitude of current may be referenced to the anticipated magnitude of the current in order to produce an inverse value of the estimated DC bus voltage that is then used to normalize the commanded voltage signal driving the machine. Alternatively, a look-up table is used to relate the measured magnitude of the current component to a corresponding estimated value of the bus voltage.