General Electric Company

Ge Energy Power Conversion Technology Gmbh

General Electric Renovables Espana, S.l.

Ge Infrastructure Technology, LLC

Ge Vernova Infrastructure Technology LLC

Robert Gregory Wagoner

David Grey Smith

Allen Michael Ritter

Govardhan Ganireddy

Anthony Michael Klodowski

Harold Robert Schnetzka

Fernando Arturo Ramirez Sanchez

Saurabh Shukla

Rajni Kant Burra

Cornelius Edward Holliday, Iii

Steven Wade Sutherland

Ravisekhar Nadimpalli Raju

Arvind Kumar Tiwari

Anthony William Galbraith

Kapil Jha

Mark Eugene Shepard

Yashomani Yashodhan Kolhatkar

John Leo Bollenbecker

Nathaniel Robert Michener

Sidney Allen Barker

Robert Allen Seymour

Edward Wayne Hardwicke, Jr

Todd David Greenleaf

Talha Haque

Dong Dong

Rui Zhou

Zhuohui Tan

Igor Berroteran

Lukas Mercer Hansen

Paul Stephen Pate

Benjamin Arthur Niemoeller

Joseph Kiran Banda

Jian Ding

Rajib Datta

Jeffrey Alan Melius

Kasi Viswanadha Raju Gadiraju

Cyrus David Harbourt

Jayanti Navilgone Ganesh

Huibin Zhu

Mathew Doyle Angel

Amy Marlene Ridenour

David Scott Wilmer

Bacil Shaqqo

Douglas Gene Austin

Scott Charles Frame

Siddharth Pant

Zane Taylor Miller

Yong Xu

Rajesh Bhupathi

Brian Mathew Hamill

Nathan Michael Killeen

John S Harrison

Einar Vaughn Larsen

Dale Robert Mashtare

Luis Jose Garces

Yunfeng Liu

Samir Armando Salamah

John D D'Atre

Kum Kang Huh

Dustin Howard

Wei Ren

Werner Gerhard Barton

Rupam Mukherjee

Lathom Alexander Louco

Veena Padmarao

Fred Henry Boettner

Wenqiang Yang

Alan Carroll Lovell

John Harold Parslow

Ramy Michael Souri

Brian Eric Lindholm

Sujan Kumar Pal

James M Nowak

Vaidhya Nath Venkitanarayanan

Henning Luetze

Tobias Schuetz

Christopher Lee Tschappatt

Pedro Monclova

John Springer Harrison

Hridya Ittamveettil

Petar Jovan Grbovic

Nithya Anand

Daniel Jordy

Pushkar Chandrakant Chaudhari

Wayne Allen Schulz

Bennett Steven Sheron

Stephen Daniel Nash

Rafael Ignacio Bedia

Ling Luo

Min Naing Lwin

Chengjun Wang

Terry Michael Tackman

Cheng Luo

Pedro Arsuaga Santos

Shrutish Dawande

William Duggan Brackman, Jr

John Wilbur Cannon

Abiyu Negede

David Everett Frye

A method for controlling an active harmonic filter of an inverter-based resource includes receiving, via a maximum compensation tracker module, a grid feedback signal, determining, via the maximum compensation tracker module, a phase shift signal based, at least in part, on the grid feedback signal, applying, via the maximum compensation tracker module, a phase shift offset signal to the phase shift signal to obtain a modified phase shift signal, determining, via the maximum compensation tracker module, a voltage reference signal for the active harmonic filter based, at least in part, on the grid feedback signal and the modified phase shift signal; and controlling, via the maximum compensation tracker module, the active harmonic filter using the voltage reference signal, wherein the phase shift offset signal ensures that the active harmonic filter injects a current substantially out of phase of a targeted harmonic.

System and method for controlling an active harmonic filter in an inverter-based resource

A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes receiving a commanded state for one or more switching devices thereof. The method also includes receiving a gate-emitter voltage of one or more of the switching devices. Further, the method includes comparing, via at least one comparator, the gate-emitter voltage of the one or more switching devices to a reference voltage range corresponding to the commanded state of the one or more switching devices. In addition, the method includes determining an actual state of the one or more switching devices based on the comparison. Thus, the method also includes implementing a control action based on the actual state of the one or more switching devices.

System and method for detecting IGBT failure in a multi-level converter using gate-emitter voltage sensing

A system and method for pre-charging a DC link of a multi-level power converter, to reduce electrical transients or to decrease a charging current when a converter contactor/disconnect switch is closed, is described. The systems and methods of the present disclosure also provides a new and simplified system for pre-charging a DC link of a multi-level power converter by leveraging a neutral point of a multi-level power converter and a single-line connection to the grid side of the power converter. The DC link charger of the present disclosure, therefore, is capable of reducing the quantity of dedicated superfluous hardware and/or excess resistors, contactors, transformers, fuses, diodes, balancing components, rectifier modules, etc. demanded by conventional systems. Reduced quantities of electronic components and hardware can thereby decrease system costs per unit and lead to significant cost savings.

System and method for pre-charging a DC link of a power converter

A method for operating a multi-level bridge power converter includes arranging a plurality of switching devices including at least four inner switching devices and at least two outer switching devices in an active neutral point clamped topology. The method also includes determining whether any of the switching devices is experiencing a failure condition by implementing a failure detection algorithm. The failure detection algorithm includes generating a blocking state logic signal by comparing a switching device voltage and a threshold reference voltage for each of the switching devices, determining an expected voltage blocking state for each of the switching devices based on gate drive signals of the switching devices and an output current direction, and detecting whether a failure condition is present in any of the switching devices based on the blocking state logic signals and the expected voltage blocking states of the switching devices.

System and method for detection of switching device failure conditions in a multi-level power converter

A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes providing a plurality of switching devices of the power converter in an active neutral point clamped topology. The method also includes operating the plurality of switching devices in a plurality of operating states such that current simultaneously flows through at least two parallel recovery paths of the plurality of switching devices during operation of the power converter to minimize a commutation path of the current when at least one diode of the plurality of switching devices recovers, thereby reducing parasitic inductance affecting the recovering antiparallel diode or the switch.

Active neutral point clamped switch sequence for parasitic inductance control of a power conversion assembly

A power electronics assembly for a power generation system includes a housing and an attenuator card positioned within the housing. The attenuator card may include at least one printed circuit board for a high-voltage attenuator circuit. The power electronics assembly also includes a potting material at least partially filling the housing on one or more sides of the attenuator card, a detachable end cap positioned at a first end of the housing, and multi-phase wiring communicatively coupled to the high-voltage attenuator circuit through the end cap.

Power electronics assembly having a potted high voltage attenuator card for a wind turbine

A method for operating a multi-level bridge power converter of an electrical power system connected to a power grid includes providing a plurality of switching devices of the power converter in one of a neutral point clamped topology or an active neutral point clamped topology, the plurality of switching devices including a first group and a second group of switching devices. The method also includes providing a multi-state deadtime for the first and second groups of switching devices that changes based on different state transitions of the power converter. Further, the method includes operating the first and second groups of switching devices according to the multi-state deadtime to allow the first group to switch differently than the second group during the different state transitions, thereby decreasing voltage overshoots on the first group during one or more of the different state transitions and providing safe transition between commutation states of the power converter.

System and method for operating multi-level power converter using a multi-state deadtime

A method for preventing damage in a bearing of a generator of an electrical power system includes monitoring one or more electrical signals of a power conversion assembly of the electrical power system. The method also includes estimating an impedance path of common mode current from a terminal to ground using the operating parameter(s) of the power conversion assembly. Further, the method includes determining a one or more magnitudes and/or a one or more phase angles of the impedance path at different frequencies, such a switching frequency and/or harmonics. Moreover, the method includes determining whether the impedance path is indicative of degradation in at least one of bearing insulation or a ground brush of the generator based on a change in the one or more magnitudes and/or the one or more phase angles. In addition, the method includes implementing a control action when the impedance path is indicative of degradation in the bearing insulation and/or the ground brush of the generator.

System and method for detecting bearing insulation and ground brush health in a generator

A method for operating a multi-level bridge power converter includes providing a plurality of switching devices of the power converter in one of a neutral point clamped topology or an active neutral point clamped topology. The method also includes providing a plurality of deadtimes for the switching devices. Further, the method includes selecting one of the deadtimes for each of the switching devices such that at least two of the switching devices operate according to different deadtimes. Moreover, the method includes operating the switching devices at the selected deadtimes to allow a first group of the switching devices to switch slower than a second group of the switching devices such that the first group of the switching devices satisfy safe operating requirements while the second group of the switching devices switch faster than the first group.

System and method for operating multi-level power converter using multiple deadtimes

A power conversion assembly includes a power converter having a plurality of switching devices, a power source electrically coupled to the power converter, and a direct current (DC) filter circuit bridging the power converter and the power source. The DC filter circuit includes a DC link having a positive rail, a negative rail, and a capacitor bank. The capacitor bank includes a first set of capacitors being a first type of capacitors and a second set of capacitors being a different, second type of capacitors. Each capacitor in the first set of capacitors is positioned closer to a respective switching device of the plurality of switching devices than a corresponding capacitor of the second set of capacitors to minimize impedance between each capacitor in the first set of capacitors and the respective switching device such that a majority of ripple current from the plurality of switching devices passes through the first set of capacitors.

Hybrid capacitor bank for a power conversion assembly

A system and method are provided for controlling a wind turbine. Accordingly, a controller of the wind turbine detects a loss of traction of the slip coupling between a generator and a rotor of the drivetrain of the wind turbine. In response to detecting the loss of traction, the controller overrides a generator torque setpoint to alter a rotational speed of the generator. In response to the altered rotational speed of the generator, the traction of the slip coupling is increased. Increasing the traction of the slip coupling facilitates an application of generator torque to the drivetrain of the wind turbine.

System and method for controlling a wind turbine

A method for controlling a power converter of a wind turbine power system connected to an electrical grid. The wind turbine power system has a generator and the power converter has rotor-side converter and a line-side converter. The method includes monitoring an electrical parameter of at least one of the wind turbine power system or the electrical grid. In response to detecting a transient event in the electrical grid, the method includes temporarily disabling the line-side converter of the power converter from the electrical grid. Either during the transient event or after the transient event is over, the method includes implementing a control action for the line-side converter of the power converter. Further, the method includes enabling the line-side converter of the power converter to the electrical grid.

System and method for controlling wind turbine converters during high voltage ride through events

A system and method are provided for controlling a wind turbine to protect the wind turbine from anomalous operations. Accordingly, in response to receiving data indicative of an anomalous operational event of the wind turbine, the controller initiates an enhanced braking mode for the wind turbine. The enhanced braking mode is characterized by operating the generator at a torque setpoint that generates maximum available torque for a given set of operating conditions. Additionally, the torque setpoint is in excess of a nominal torque limit for the generator.

System and method for controlling a wind turbine to protect the wind turbine from anomalous operations

A method for operating a wind turbine power system connected to an electrical grid includes collecting data relating to one or more parameters of one or more electrical components of the wind turbine power system. The method may also include performing a statistical analysis of the data relating to one or more parameters of the one or more electrical components. Further, the method includes predicting future behavior of the electrical component(s) based on the statistical analysis. Moreover, the method includes determining set points for the electrical component(s) using the predicted future behavior. In addition, the method includes operating the wind turbine power system at the determined set points for the electrical component(s) so as to optimize at least one characteristic of the electrical component(s).

System and method for designing and operating a wind turbine power system based on statistical analysis of operational and/or grid data thereof

A method for controlling a three-level back-to-back voltage source power conversion assembly includes receiving an indication of a DC or AC unbalance occurring in voltage of a DC link. The power conversion assembly has a first power converter coupled to a second power converter via the DC link. In response to receiving the indication, the method includes activating a balancing algorithm that includes determining a deviation of a midpoint voltage of the DC link as a function of a total voltage of the DC link, calculating a voltage compensation needed for pulse-width modulation signals of the power conversion assembly based on the deviation, and coordinating common mode voltage injection from each of the power converters independently at a neutral point of the power conversion assembly based on the voltage compensation, thereby minimizing the at least one of the DC unbalance or the AC unbalance at any given operating condition.

System and method for neutral point balancing for back-to-back voltage source converters

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Roanoke, VA, United States of America

Robert Gregory Wagoner