Thomas A. Nondahl

Person

West Allis, WI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Feedforward control of motor drives with output sinewave filter
- Patent number 10,158,314
- Issue date Dec 18, 2018
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current control of motor drives with output sinewave filter
- Patent number 10,020,766
- Issue date Jul 10, 2018
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Sensorless motor drive vector control with feedback compensation fo...
- Patent number 9,985,565
- Issue date May 29, 2018
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Parameter estimation system and method for an induction motor
- Patent number 9,880,223
- Issue date Jan 30, 2018
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control of motor drives with output sinewave filter capacitor curre...
- Patent number 9,800,190
- Issue date Oct 24, 2017
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Rotor position estimation apparatus and methods
- Patent number 9,774,284
- Issue date Sep 26, 2017
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for speed reversal control of motor drive
- Patent number 9,716,460
- Issue date Jul 25, 2017
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Cascaded H-bridge (CHB) inverter level shift PWM with rotation
- Patent number 9,627,994
- Issue date Apr 18, 2017
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Methods and systems for sensorless closed loop motor speed and torq...
- Patent number 9,595,896
- Issue date Mar 14, 2017
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- G05 - CONTROLLING REGULATING
Information Patent Grant
Sensorless motor drive vector control
- Patent number 9,490,738
- Issue date Nov 8, 2016
- Rockwell Automation Technologies, Inc.
- Thomas A. Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Transition scheme for position sensorless control of AC motor drives
- Patent number 9,374,028
- Issue date Jun 21, 2016
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Position sensorless open loop control for motor drives with output...
- Patent number 9,312,779
- Issue date Apr 12, 2016
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling power converter with inverter...
- Patent number 9,294,019
- Issue date Mar 22, 2016
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for stability control of open loop motor drive...
- Patent number 9,287,812
- Issue date Mar 15, 2016
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for controlling power converter with inverter...
- Patent number 9,124,209
- Issue date Sep 1, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power stage precharging and dynamic braking apparatus for multileve...
- Patent number 9,083,274
- Issue date Jul 14, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for stability control of open loop motor drive...
- Patent number 9,054,611
- Issue date Jun 9, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Position sensorless open loop control for motor drives with output...
- Patent number 9,054,621
- Issue date Jun 9, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Cascaded H-Bridge (CHB) inverter level shift PWM with rotation
- Patent number 8,982,593
- Issue date Mar 17, 2015
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Parameter estimation system and method for an induction motor
- Patent number 8,742,767
- Issue date Jun 3, 2014
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Cascaded H-bridge (CHB) inverter level shift PWM with rotation
- Patent number 8,619,446
- Issue date Dec 31, 2013
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control method and system with feedback indicative of load flux
- Patent number 8,547,050
- Issue date Oct 1, 2013
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for estimating rotor position in a sensorless...
- Patent number 8,497,655
- Issue date Jul 30, 2013
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for increased current stability in a PWM drive
- Patent number 8,330,405
- Issue date Dec 11, 2012
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for automatically identifying electrical param...
- Patent number 8,228,013
- Issue date Jul 24, 2012
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control method and system with feedback indicative of load flux
- Patent number 8,203,304
- Issue date Jun 19, 2012
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Rotor position estimator for an electrical machine
- Patent number 8,159,168
- Issue date Apr 17, 2012
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for identifying orientation of a stationary ro...
- Patent number 7,944,164
- Issue date May 17, 2011
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Universal adaptive torque control for PM motors for field-weakening...
- Patent number 7,915,852
- Issue date Mar 29, 2011
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Induction motor analysis and control method
- Patent number 7,868,581
- Issue date Jan 11, 2011
- Rockwell Automation Technologies, Inc.
- Wei Qian
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
CURRENT CONTROL OF MOTOR DRIVES WITH OUTPUT SINEWAVE FILTER
- Publication number 20180138849
- Publication date May 17, 2018
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SENSORLESS MOTOR DRIVE VECTOR CONTROL WITH FEEDBACK COMPENSATION FO...
- Publication number 20170302209
- Publication date Oct 19, 2017
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL OF MOTOR DRIVES WITH OUTPUT SINEWAVE FILTER CAPACITOR CURRE...
- Publication number 20170222588
- Publication date Aug 3, 2017
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FEEDFORWARD CONTROL OF MOTOR DRIVES WITH OUTPUT SINEWAVE FILTER
- Publication number 20170141712
- Publication date May 18, 2017
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ROTOR POSITION ESTIMATION APPARATUS AND METHODS
- Publication number 20160248354
- Publication date Aug 25, 2016
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR SPEED REVERSAL CONTROL OF MOTOR DRIVE
- Publication number 20160218657
- Publication date Jul 28, 2016
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SENSORLESS MOTOR DRIVE VECTOR CONTROL WITH FEEDBACK COMPENSATION FO...
- Publication number 20160173012
- Publication date Jun 16, 2016
- Rockwell Automation Technologies, Inc.
- Thomas A. Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SENSORLESS MOTOR DRIVE VECTOR CONTROL
- Publication number 20160173018
- Publication date Jun 16, 2016
- Rockwell Automation Technologies, Inc.
- Thomas A. Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
TRANSITION SCHEME FOR POSITION SENSORLESS CONTROL OF AC MOTOR DRIVES
- Publication number 20160056740
- Publication date Feb 25, 2016
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POSITION SENSORLESS OPEN LOOP CONTROL FOR MOTOR DRIVES WITH OUTPUT...
- Publication number 20150194901
- Publication date Jul 9, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION
- Publication number 20150180369
- Publication date Jun 25, 2015
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING POWER CONVERTER WITH INVERTER...
- Publication number 20150123579
- Publication date May 7, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR STABILITY CONTROL OF OPEN LOOP MOTOR DRIVE...
- Publication number 20150002067
- Publication date Jan 1, 2015
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR STABILITY CONTROL OF OPEN LOOP MOTOR DRIVE...
- Publication number 20150002059
- Publication date Jan 1, 2015
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POSITION SENSORLESS OPEN LOOP CONTROL FOR MOTOR DRIVES WITH OUTPUT...
- Publication number 20140312811
- Publication date Oct 23, 2014
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER STAGE PRECHARGING AND DYNAMIC BRAKING APPARATUS FOR MULTILEVE...
- Publication number 20140300298
- Publication date Oct 9, 2014
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR
- Publication number 20140285230
- Publication date Sep 25, 2014
- David M. Messersmith
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND APPARATUS FOR CONTROLLING POWER CONVERTER WITH INVERTER...
- Publication number 20140197774
- Publication date Jul 17, 2014
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION
- Publication number 20140036557
- Publication date Feb 6, 2014
- Rockwell Automation Technologies, Inc.
- Thomas Nondahl
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION
- Publication number 20130286704
- Publication date Oct 31, 2013
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method and Apparatus for Estimating Rotor Position in a Sensorless...
- Publication number 20120268050
- Publication date Oct 25, 2012
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control Method and System with Feedback Indicative of Load Flux
- Publication number 20120223668
- Publication date Sep 6, 2012
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR
- Publication number 20110102012
- Publication date May 5, 2011
- Rockwell Automation Technologies, Inc.
- David M. Messersmith
- G01 - MEASURING TESTING
Information Patent Application
Method and Apparatus for Increased Current Stability in a PWM Drive
- Publication number 20100320948
- Publication date Dec 23, 2010
- Semyon Royak
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ROTOR POSITION ESTIMATOR FOR AN ELECTRICAL MACHINE
- Publication number 20100301790
- Publication date Dec 2, 2010
- Rockwell Automation Technologies, Inc.
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR AUTOMATICALLY IDENTIFYING ELECTRICAL PARAM...
- Publication number 20100060210
- Publication date Mar 11, 2010
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR IDENTIFYING ORIENTATION OF A STATIONARY RO...
- Publication number 20100026223
- Publication date Feb 4, 2010
- Jingbo Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
UNIVERSAL ADAPTIVE TORQUE CONTROL FOR PM MOTORS FOR FIELD-WEAKENING...
- Publication number 20090212732
- Publication date Aug 27, 2009
- Rockwell Automation Technologies, Inc.
- Semyon Royak
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control method and system with feedback indicative of load flux
- Publication number 20090058341
- Publication date Mar 5, 2009
- Rockwell Automation Technologies, Inc.
- Haihui Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INDUCTION MOTOR ANALYSIS AND CONTROL METHOD
- Publication number 20080203954
- Publication date Aug 28, 2008
- Rockwell Automation Technologies, Inc.
- Wei Qian
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Thomas A. Nondahl

Person

Patents Grantslast 30 patents

Feedforward control of motor drives with output sinewave filter

Current control of motor drives with output sinewave filter

Sensorless motor drive vector control with feedback compensation fo...

Parameter estimation system and method for an induction motor

Control of motor drives with output sinewave filter capacitor curre...

Rotor position estimation apparatus and methods

Method and apparatus for speed reversal control of motor drive

Cascaded H-bridge (CHB) inverter level shift PWM with rotation

Methods and systems for sensorless closed loop motor speed and torq...

Sensorless motor drive vector control

Transition scheme for position sensorless control of AC motor drives

Position sensorless open loop control for motor drives with output...

Method and apparatus for controlling power converter with inverter...

Method and apparatus for stability control of open loop motor drive...

Method and apparatus for controlling power converter with inverter...

Power stage precharging and dynamic braking apparatus for multileve...

Method and apparatus for stability control of open loop motor drive...

Position sensorless open loop control for motor drives with output...

Cascaded H-Bridge (CHB) inverter level shift PWM with rotation

Parameter estimation system and method for an induction motor

Cascaded H-bridge (CHB) inverter level shift PWM with rotation

Control method and system with feedback indicative of load flux

Method and apparatus for estimating rotor position in a sensorless...

Method and apparatus for increased current stability in a PWM drive

Method and apparatus for automatically identifying electrical param...

Control method and system with feedback indicative of load flux

Rotor position estimator for an electrical machine

Method and apparatus for identifying orientation of a stationary ro...

Universal adaptive torque control for PM motors for field-weakening...

Induction motor analysis and control method

Patents Applicationslast 30 patents

CURRENT CONTROL OF MOTOR DRIVES WITH OUTPUT SINEWAVE FILTER

SENSORLESS MOTOR DRIVE VECTOR CONTROL WITH FEEDBACK COMPENSATION FO...

CONTROL OF MOTOR DRIVES WITH OUTPUT SINEWAVE FILTER CAPACITOR CURRE...

FEEDFORWARD CONTROL OF MOTOR DRIVES WITH OUTPUT SINEWAVE FILTER

ROTOR POSITION ESTIMATION APPARATUS AND METHODS

METHOD AND APPARATUS FOR SPEED REVERSAL CONTROL OF MOTOR DRIVE

SENSORLESS MOTOR DRIVE VECTOR CONTROL WITH FEEDBACK COMPENSATION FO...

SENSORLESS MOTOR DRIVE VECTOR CONTROL

TRANSITION SCHEME FOR POSITION SENSORLESS CONTROL OF AC MOTOR DRIVES

POSITION SENSORLESS OPEN LOOP CONTROL FOR MOTOR DRIVES WITH OUTPUT...

CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION

METHOD AND APPARATUS FOR CONTROLLING POWER CONVERTER WITH INVERTER...

METHOD AND APPARATUS FOR STABILITY CONTROL OF OPEN LOOP MOTOR DRIVE...

METHOD AND APPARATUS FOR STABILITY CONTROL OF OPEN LOOP MOTOR DRIVE...

POSITION SENSORLESS OPEN LOOP CONTROL FOR MOTOR DRIVES WITH OUTPUT...

POWER STAGE PRECHARGING AND DYNAMIC BRAKING APPARATUS FOR MULTILEVE...

PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR

METHOD AND APPARATUS FOR CONTROLLING POWER CONVERTER WITH INVERTER...

CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION

CASCADED H-BRIDGE (CHB) INVERTER LEVEL SHIFT PWM WITH ROTATION

Method and Apparatus for Estimating Rotor Position in a Sensorless...

Control Method and System with Feedback Indicative of Load Flux

PARAMETER ESTIMATION SYSTEM AND METHOD FOR AN INDUCTION MOTOR

Method and Apparatus for Increased Current Stability in a PWM Drive

ROTOR POSITION ESTIMATOR FOR AN ELECTRICAL MACHINE

METHOD AND APPARATUS FOR AUTOMATICALLY IDENTIFYING ELECTRICAL PARAM...

METHOD AND APPARATUS FOR IDENTIFYING ORIENTATION OF A STATIONARY RO...

UNIVERSAL ADAPTIVE TORQUE CONTROL FOR PM MOTORS FOR FIELD-WEAKENING...

Control method and system with feedback indicative of load flux

INDUCTION MOTOR ANALYSIS AND CONTROL METHOD