Doyle F Busse

8643383, Feb 4, 2014

Jan 28, 2011

13/016111

Yuan Xiao - Ontario, CA
Lixiang Wei - Whitefish Bay WI, US
Doyle F. Busse - Jackson WI, US

Rockwell Automation Technologies, Inc. - Mayfield Heights OH

G01R 31/12
H01G 2/12
G05B 5/00

324548, 324519, 361 15, 318445

The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.

20130119903, May 16, 2013

Jul 13, 2012

13/548753

Bruce W. Weiss - Milwaukee WI, US
Doyle F. Busse - Muskego WI, US
Jeremy J. Keegan - Kewaskum WI, US
Lixiang Wei - Whitefish Bay WI, US
Michael W. Loth - Germantown WI, US
Rangarajan M. Tallam - Germantown WI, US
Yogesh Patel - Grafton WI, US

Rockwell Automation Technologies, Inc. - Mayfield Heights OH

H02H 7/125
H02P 27/04

3184003, 363 53

AC pre-charging techniques are provided for pre-charging the DC bus on a motor drive. AC pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, etc. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect a motor drive from the AC power supply under certain fault conditions.

20130121051, May 16, 2013

Jul 13, 2012

13/548685

Bruce W. Weiss - Milwaukee WI, US
Doyle F. Busse - Muskego WI, US
Jeremy J. Keegan - Kewaskum WI, US
Lixiang Wei - Whitefish Bay WI, US
Michael W. Loth - Germantown WI, US
Rangarajan M. Tallam - Germantown WI, US
Yogesh Patel - Grafton WI, US

Rockwell Automation Technologies, Inc. - Mayfield Heights OH

H02M 7/537

363131

Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.

55023606, Mar 26, 1996

Mar 10, 1995

8/401522

Russel J. Kerkman - Milwaukee WI
Brian J. Seibel - Grafton WI
Doyle Busse - Muskego WI

Allen-Bradley Company, Inc. - Milwaukee WI

H02P 700
H02P 540

318805

A non-invasive system for accurately determining the stator resistance in an electric motor during motor operation. The system includes a mechanism for determining the phase angle of the stator current within the dq frame of reference and a mechanism for transforming feedback voltages into a new frame of reference defined by this phase angle. Counter EMFs are detected which are free of stator resistance and used to force the counter EMF components of the stator winding voltages to conform to desired values. The stator resistance is then derived using simple mathematical relationships between the resistance, stator current, feedback voltage and known counter EMF values.

20160172992, Jun 16, 2016

Dec 16, 2014

14/571436

- Mayfield Heights OH, US
Doyle F. Busse - Jackson WI, US
Alia Rebecca Strandt - Hales Corners WI, US

Rockwell Automation Technologies, Inc. - Mayfield Heights OH

H02M 5/458

Power converters are presented having a precharging resistance and a normally closed precharging switch with a controller to limit inrush current during precharging of a DC bus circuit capacitance while preventing operation of rectifier switching devices until the DC bus voltage reaches a threshold value, and then to open the precharging switch and allow selective operation of the rectifier switching devices, with a second capacitance coupled across a rectifier output to mitigate rectifier output voltage spikes due to common mode currents flowing through a DC link choke, and additional capacitors coupled between positive and negative rectifier output terminals and ground to limit the rectifier output terminal voltages with respect to ground.

20150256112, Sep 10, 2015

May 26, 2015

14/721814

- Mayfield Heights OH, US
Doyle F. Busse - Muskego WI, US
Jeremy J. Keegan - Kewaskum WI, US
Lixiang Wei - Whitefish Bay WI, US
Michael W. Loth - Germantown WI, US
Rangarajan M. Tallam - Germantown WI, US
Yogesh Patel - Grafton WI, US

H02P 6/20
H02P 6/00
H02P 6/04
H02M 7/537

Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.

20150171772, Jun 18, 2015

Dec 16, 2013

14/107026

RANGARAJAN TALLAM - Germantown WI, US
DOYLE F. BUSSE - Muskego WI, US
BRIAN P. BROWN - Mayville WI, US
RUSSEL J. KERKMAN - Milwaukee WI, US

ROCKWELL AUTOMATION TECHNOLOGIES, INC. - Mayfield Heights OH

H02M 7/5387
G01R 19/00

Output voltage feedback systems and methods are provided for controlling voltage source inverter output voltages using low bandwidth buffer circuitry and low A/D converter sample rates to sense and sample PWM output voltage waveforms to provide an estimated volt-second value for phase voltage or line-line voltage is feedback for controlling the voltage source inverter.

20140132295, May 15, 2014

Jan 20, 2014

14/159258

- Mayfield Heights OH, US
Lixiang Wei - Whitefish Bay WI, US
Doyle F. Busse - Jackson WI, US

ROCKWELL AUTOMATION TECHNOLOGIES, INC. - Mayfield Heights OH

G01R 31/28
H02M 1/42

3247503, 363 13, 363 34

The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.