Patents by Inventor Robert J. Breitzmann
Robert J. Breitzmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10158314Abstract: Disclosed examples include power conversion systems and methods to operate an inverter to drive a motor load through an intervening output filter, a transformer and a cable, including a current regulator to compute a command value according to a current reference value and a motor current feedback value, a cross-coupled feedforward component to compensate the command value by an estimated cross-coupled voltage value to compute a control output value, a cross-coupled object component to compute the motor current feedback value according to a voltage value using a plant transfer function representing the output filter, the transformer, the cable and the motor load, and a controller to provide the inverter switching control signals to control the inverter according to the control output value.Type: GrantFiled: February 1, 2017Date of Patent: December 18, 2018Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Jingya Dai, Thomas A. Nondahl, Jingbo Liu, Robert J. Breitzmann, Peter B. Schmidt
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Patent number: 10020766Abstract: Disclosed examples include power conversion systems, methods and computer readable mediums to operate an inverter to drive a motor load through an output filter, in which a control output value is computed according to a current reference value and a current feedback value using a proportional-integral (PI) current regulator, the control output value is filtered using a lag compensator filter to compute an inverter output command value, and the inverter is controlled according to the inverter output command value.Type: GrantFiled: November 15, 2016Date of Patent: July 10, 2018Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Robert J. Breitzmann, Jingbo Liu, Thomas A. Nondahl, Jingya Dai, Peter B. Schmidt
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Publication number: 20180138849Abstract: Disclosed examples include power conversion systems, methods and computer readable mediums to operate an inverter to drive a motor load through an output filter, in which a control output value is computed according to a current reference value and a current feedback value using a proportional-integral (PI) current regulator, the control output value is filtered using a lag compensator filter to compute an inverter output command value, and the inverter is controlled according to the inverter output command value.Type: ApplicationFiled: November 15, 2016Publication date: May 17, 2018Applicant: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Robert J. Breitzmann, Jingbo Liu, Thomas A. Nondahl, Jingya Dai, Peter B. Schmidt
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Publication number: 20170141712Abstract: Disclosed examples include power conversion systems and methods to operate an inverter to drive a motor load through an intervening output filter, a transformer and a cable, including a current regulator to compute a command value according to a current reference value and a motor current feedback value, a cross-coupled feedforward component to compensate the command value by an estimated cross-coupled voltage value to compute a control output value, a cross-coupled object component to compute the motor current feedback value according to a voltage value using a plant transfer function representing the output filter, the transformer, the cable and the motor load, and a controller to provide the inverter switching control signals to control the inverter according to the control output value.Type: ApplicationFiled: February 1, 2017Publication date: May 18, 2017Applicant: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Jingya Dai, Thomas A. Nondahl, Jingbo Liu, Robert J. Breitzmann, Peter B. Schmidt
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Patent number: 9595896Abstract: Methods and systems are presented for closed loop motor speed and torque control without a sensor at the motor, in which configuration parameters are received from a user interface to define operating characteristics of a filter, a transformer, a cable, and the motor coupled with the output of a motor drive, and an object model of the motor drive is configured according to the filter, transformer, cable and motor configuration parameters to facilitate sensorless closed loop motor speed and/or torque control.Type: GrantFiled: December 16, 2015Date of Patent: March 14, 2017Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Thomas Nondahl, Jingya Dai, Thomas M. Cahill, Robert J. Breitzmann, Peter B. Schmidt, Jingbo Liu, Ehsan Al-Nabi
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Patent number: 9331487Abstract: Methods and apparatus are presented for unintentional islanding detection for grid tie converters in which the phase angle disturbance is introduced by modification of grid side converter switching control signals and a mismatch of reactive power between generation and the grid load is formed upon the occurrence of unintentional islanding, where the applied phase disturbance is determined according to two pre-defined curves to form an equivalent positive feedback at different frequencies to prevent the converter from forming an island at a new stable frequency after the grid is disconnected.Type: GrantFiled: March 14, 2013Date of Patent: May 3, 2016Assignee: Rockwell Automation Technologies, Inc.Inventors: Zhenhuan Yuan, Shaofeng Zhang, Haihui Lu, Lixiang Wei, Russel J. Kerkman, Richard Lukaszewski, Ahmed Mohamed Sayed Ahmed, Robert J. Breitzmann
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Patent number: 9318944Abstract: Apparatus and methods are provided for detecting degradation of delta-connected filter capacitors in an active front end (AFE) power converter, in which delta circuit capacitor leg currents are calculated based on measured branch circuit currents, and filter capacitor impedance values are computed based on the calculated leg currents as well as measured line-to-line voltages and corresponding phase angles for comparison with one or more thresholds to selectively detect degradation of the filter capacitors. Further apparatus and methods are provided for detecting degradation of Y-connected filter capacitors by computation of fundamental frequency RMS impedance values as ratios of RMS capacitor voltages and RMS circuit branch currents, and comparison of the calculated RMS impedance values with one or more thresholds.Type: GrantFiled: April 29, 2013Date of Patent: April 19, 2016Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Robert J. Breitzmann
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Patent number: 9041327Abstract: Apparatus and methods are presented for mitigating overvoltages and limiting reverse motor speeds for motor drive power loss events, in which a first power dissipation circuit is enabled at the motor drive output to limit reverse rotation of a driven motor load when motor drive power is lost, and a second power dissipation circuit in a DC bus circuit is used to mitigate over voltages following restoration of motor drive power.Type: GrantFiled: June 12, 2013Date of Patent: May 26, 2015Assignee: Rockwell Automation Technologies, Inc.Inventors: Robert J. Breitzmann, Semyon Royak, John M. Kasunich
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Publication number: 20140368143Abstract: Apparatus and methods are presented for mitigating overvoltages and limiting reverse motor speeds for motor drive power loss events, in which a first power dissipation circuit is enabled at the motor drive output to limit reverse rotation of a driven motor load when motor drive power is lost, and a second power dissipation circuit in a DC bus circuit is used to mitigate over voltages following restoration of motor drive power.Type: ApplicationFiled: June 12, 2013Publication date: December 18, 2014Applicant: Rockwell Automation Technologies, Inc.Inventors: Robert J. Breitzmann, Semyon Royak, John M. Kasunich
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Patent number: 8902616Abstract: Active front end power conversion systems are presented having a peak detector with adjustable decay providing a signal to an overload protection component to selectively discontinue rectifier switching control signals for protection of active rectifier switches during unbalanced line voltage conditions.Type: GrantFiled: October 13, 2011Date of Patent: December 2, 2014Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, John M. Kasunich, Robert J. Breitzmann, John James Jenks
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Publication number: 20140320056Abstract: Apparatus and methods are provided for detecting degradation of delta-connected filter capacitors in an active front end (AFE) power converter, in which delta circuit capacitor leg currents are calculated based on measured branch circuit currents, and filter capacitor impedance values are computed based on the calculated leg currents as well as measured line-to-line voltages and corresponding phase angles for comparison with one or more thresholds to selectively detect degradation of the filter capacitors. Further apparatus and methods are provided for detecting degradation of Y-connected filter capacitors by computation of fundamental frequency RMS impedance values as ratios of RMS capacitor voltages and RMS circuit branch currents, and comparison of the calculated RMS impedance values with one or more thresholds.Type: ApplicationFiled: April 29, 2013Publication date: October 30, 2014Applicant: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Robert J. Breitzmann
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Publication number: 20140265596Abstract: Methods and apparatus are presented for unintentional islanding detection for grid tie converters in which the phase angle disturbance is introduced by modification of grid side converter switching control signals and a mismatch of reactive power between generation and the grid load is formed upon the occurrence of unintentional islanding, where the applied phase disturbance is determined according to two pre-defined curves to form an equivalent positive feedback at different frequencies to prevent the converter from forming an island at a new stable frequency after the grid is disconnected.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: Rockwell Automation Technologies, Inc.Inventors: Zhenhuan YUAN, Shaofeng ZHANG, Haihui LU, Lixiang WEI, Russel J. Kerkman, Richard Lukaszewski, Ahmed Mohamed Sayed Ahmed, Robert J. Breitzmann
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Publication number: 20130094258Abstract: Active front end power conversion systems are presented having a peak detector with adjustable decay providing a signal to an overload protection component to selectively discontinue rectifier switching control signals for protection of active rectifier switches during unbalanced line voltage conditions.Type: ApplicationFiled: October 13, 2011Publication date: April 18, 2013Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventors: Semyon Royak, John M. Kasunich, Robert J. Breitzmann, John James Jenks
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Patent number: 8330405Abstract: The present invention provides an improved current regulator for PWM based drives for electric motors. The invention provides compensation for the rotor position signal for delays introduced due to the PWM algorithm and for digital sampling present in such a drive. Current regulator commonly operate in a two-phase reference frame, requiring forward and reverse coordinate transformations between the physical current values and the two-phase reference frame variables. The present invention provides an improved compensation in the forward transformation by determining the phase lag between the commanded voltage reference and the output voltage reference and by further compensating the forward transformation for errors introduced due to sampling the current either at different sampling instances than the rotor position or at multiple sampling instances during a carrier period.Type: GrantFiled: June 18, 2009Date of Patent: December 11, 2012Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Mark M. Harbaugh, Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Robert J. Breitzmann
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Patent number: 8009450Abstract: Active power converters and methods are presented for converting input electrical power to output electrical power with converter switching control in which the individual phase voltage command values are compensated according to phase line voltage imbalances to compensate the converter control to provide balanced phase currents in the presence of unbalanced phase supply line voltages.Type: GrantFiled: August 26, 2008Date of Patent: August 30, 2011Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Robert J. Breitzmann, Mark M. Harbaugh
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Patent number: 7915852Abstract: The invention includes a motor controller and method for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by, among other things, receiving a torque command, determining a normalized torque command by normalizing the torque command to a characteristic current of the motor, determining a normalized maximum available voltage, determining an inductance ratio of the motor, and determining a direct-axis current based upon the normalized torque command, the normalized maximum available voltage, and the inductance ratio of the motor.Type: GrantFiled: February 22, 2008Date of Patent: March 29, 2011Assignee: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Mark M. Harbaugh, Robert J. Breitzmann, Thomas A. Nondahl, Peter B. Schmidt, Jingbo Liu
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Publication number: 20100320948Abstract: The present invention provides an improved current regulator for PWM based drives for electric motors. The invention provides compensation for the rotor position signal for delays introduced due to the PWM algorithm and for digital sampling present in such a drive. Current regulator commonly operate in a two-phase reference frame, requiring forward and reverse coordinate transformations between the physical current values and the two-phase reference frame variables. The present invention provides an improved compensation in the forward transformation by determining the phase lag between the commanded voltage reference and the output voltage reference and by further compensating the forward transformation for errors introduced due to sampling the current either at different sampling instances than the rotor position or at multiple sampling instances during a carrier period.Type: ApplicationFiled: June 18, 2009Publication date: December 23, 2010Inventors: Semyon Royak, Mark M. Harbaugh, Thomas A. Nondahl, Jingbo Liu, Peter B. Schmidt, Robert J. Breitzmann
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Publication number: 20100054004Abstract: Active power converters and methods are presented for converting input electrical power to output electrical power with converter switching control in which the individual phase voltage command values are compensated according to phase line voltage imbalances to compensate the converter control to provide balanced phase currents in the presence of unbalanced phase supply line voltages.Type: ApplicationFiled: August 26, 2008Publication date: March 4, 2010Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.Inventors: Semyon Royak, Robert J. Breitzmann, Mark M. Harbaugh
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Publication number: 20090212732Abstract: The invention includes a motor controller and method for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by, among other things, receiving a torque command, determining a normalized torque command by normalizing the torque command to a characteristic current of the motor, determining a normalized maximum available voltage, determining an inductance ratio of the motor, and determining a direct-axis current based upon the normalized torque command, the normalized maximum available voltage, and the inductance ratio of the motor.Type: ApplicationFiled: February 22, 2008Publication date: August 27, 2009Applicant: Rockwell Automation Technologies, Inc.Inventors: Semyon Royak, Mark M. Harbaugh, Robert J. Breitzmann, Thomas A. Nondahl, Peter B. Schmidt, Jingbo Liu
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Patent number: 5530323Abstract: A system for synchronizing a plurality of motors is disclosed. The system includes a universal drive controller which can control the operation of two motors, a power module for each motor, and a power module interface rack which is utilized to interconnect the motor to its associated universal drive controller. If a plurality of universal drive controllers is involved, a common clock is utilized to synchronize the operation of same.Synchronization of the motors is achieved by monitoring the output shaft of each motor through the use of a resolver, transmitting feedback data relative to the position of the output shaft to the universal drive controller via the power module interface rack, calculation of command data by the universal drive controller to effect synchronization, and transmitting the command data to the power module interface rack wherein the power module causes the proper firing signals to be transmitted to the associated motor.Type: GrantFiled: September 14, 1994Date of Patent: June 25, 1996Assignee: Reliance Electric Industrial CompanyInventor: Robert J. Breitzmann