York International Corporation

General Electric Company

Johnson Controls Technology Company

Other

General Electric Renovables Espana, S.l.

Harold Robert Schnetzka

Robert Gregory Wagoner

Ivan Jadric

Govardhan Ganireddy

Arvind Kumar Tiwari

Yashomani Yashodhan Kolhatkar

Frank E Wills

Allen Michael Ritter

Ravisekhar Nadimpalli Raju

Anthony Michael Klodowski

Sidney Allen Barker

Paul Nemit, Jr

John Francis Judge

Gregory Keith Beaverson

Saurabh Shukla

Shreesha Adiga Manoor

E Curtis Eichelberger

Kapil Jha

Rajni Kant Burra

Dean K Norbeck

Douglas Alan Kester

Israel Federman

Edward Wayne Hardwicke, Jr

John Leo Bollenbecker

Stephen Harold Smith

Kathleen S Rogers

Ivan Jadri&cacute;

Douglas Gene Austin

Steve M Hoover

Donald L Tollinger

Muhammet Cosan

Mustafa Kemel Yanik

Timothy M Frank

Samir Armando Salamah

Mustafa Kemal Yanik

Veena Padmarao

Scott Victor Slothower

Lukas Mercer Hansen

Theodore Steven Wilmot

Parag Rameshchandra Dharmadhikari

Mahesh Valiya-Naduvath

Vaidhya Nath Venkitanarayanan

Paul Stephen Pate

Mahesh Valiya Naduvath

Amy Marlene Ridenour

Shreesha Adiga-Manoor

Frank Highland Hill, Iv

Daniel Jordy

Wayne Allen Schulz

Bennett Steven Sheron

Timothy Wilcox Jayko

Abiyu Negede

Wayne Allen Schultz

Branislav Vujanovic

Steven N Roy

Louis A Guido, Jr

Kraig W Bockhorst

A method for operating a power system connected to a power grid includes providing an active filter in the converter power path. Further, the method includes determining a change in attenuation of harmonics of the power system over a predetermined frequency spectrum that is needed to comply with one or more grid code requirements of the power grid. Thus, the method includes actively controlling, via a controller, the active filter to provide the change to the attenuation of the harmonics of the power system so as to mitigate the harmonics of the power system.

System and method for controlling harmonics in a renewable energy power system

A power generation system () is presented. The power generation system includes a prime mover (), a doubly-fed induction generator (DFIG) () having a rotor winding () and a stator winding (), a rotor-side converter (), a line-side converter (), and a secondary power source () electrically coupled to a DC-link (). Additionally, the power generation system includes a control sub-system () having a controller, and a plurality of switching elements (, andor). The controller is configured to selectively control switching of one or more switching elements (, andor) based on a value of an operating parameter corresponding to at least one of the prime mover, the DFIG, or the secondary power source to connect the rotor-side converter in parallel to the line-side converter to increase an electrical power production by the power generation system.

Method and system for enhancing electrical power production by a power generation system by controlling switches to place a rotor-side converter in parallel with a line-side converter

An electrical power system connectable to a power grid includes a cluster of electrical power subsystems, each of the electrical power subsystems including a power converter electrically coupled to a generator having a generator rotor and a generator stator. Each of the electrical power subsystems defines a stator power path and a converter power path for providing power to the power grid. Each of the electrical power subsystems further includes a transformer. The system further includes a subsystem breaker configured with each of the electrical power subsystems, and a cluster power path extending from each subsystem breaker for connecting the cluster of electrical power subsystems to the power grid. The system further includes a reactive power compensation inverter electrically coupled within the electrical power system, the reactive power compensation inverter operable to increase the reactive power level in the electrical current flowing to the power grid.

Electrical power systems having reactive power and harmonic support components

An electrical power system connected to a power grid can include a generator having a stator and a rotor and a power converter. The stator is connected to the power grid via a stator power path. The power converter can include a line-side converter coupled to the power grid via a converter power path and a rotor-side converter coupled to a rotor bus of the rotor and the line-side converter via a DC link. The rotor-side converter is configured to convert a DC power on the DC link to an AC signal for the rotor bus. The power system can also include an active filter having one or more active controlled components. The active filter is coupled in parallel with the rotor-side converter to reduce harmonics of the electrical power system.

DFIG converter with active filter

A control method for increasing reactive power generation of a wind turbine having a Doubly-Fed Induction Generator (DFIG) includes obtaining, by a control device having one or more processors and one or more memory devices, wind forecast data of the wind turbine. Further, the method includes generating, by the control device, a real-time thermal model of the DFIG of the wind turbine using the wind forecast data. More specifically, the thermal model defines a thermal capacity for the DFIG that does not exceed system limits. Thus, the method also includes dynamically adjusting, by the control device, a reactive power set point of the DFIG of the wind turbine based on the real-time thermal model.

Extended reaction power for wind farms

A yaw system of a wind turbine having contingency autonomous control capabilities includes a plurality of yaw system components configured to change an angle of a nacelle of the wind turbine relative to an incoming wind direction. The plurality of yaw system components includes an auxiliary power supply comprising a brake power control device, a braking unit coupled to the brake power control device, at least two energy storage devices coupled to the braking unit, a plurality of yaw drive mechanisms communicatively coupled to the auxiliary power supply via a communication link, and a controller configured to implement a protective control strategy for the yaw system in response to one of the yaw system components experiencing a failure. Each of the yaw drive mechanisms includes a yaw power control device.

Contingency autonomous yaw control for a wind turbine

A control method for dynamically controlling active and reactive power capability of a wind farm includes obtaining one or more real-time operating parameters of each of the wind turbines. The method also includes obtaining one or more system limits of each of the wind turbines. Further, the method includes measuring at least one real-time wind condition at each of the wind turbines. Moreover, the method includes continuously calculating an overall maximum active power capability and an overall maximum reactive power capability for each of the wind turbines as a function of the real-time operating parameters, the system limits, and/or the real-time wind condition. Further, the method includes generating a generator capability curve for each of the wind turbines using the overall maximum active and reactive power capabilities and communicating the generator capability curves to a farm-level controller of the wind farm that can use the curves to maximize the instantaneous power output of the wind farm.

Dynamic active and reactive power capability for wind farms

An energy storage system for use in a renewable energy power system is provided. More particularly, an energy storage system can be coupled to the DC bus of a power converter in a renewable energy power system. A switching power supply can be coupled between the energy storage device and the DC bus of the power converter. The switching power supply can include a bi-directional resonant DC to DC converter. The bi-directional resonant converter can include a plurality of switching elements, a resonant circuit coupled to the at least one switching element, and a filtering circuit coupled to the resonant circuit. The bi-directional resonant converter can be configured to accommodate power flow in at least two directions.

Energy storage system for renewable energy source

The present subject matter is directed to an electrical power circuit connected to a power grid and method of operating same. The electrical power circuit has a power converter electrically coupled to a generator, such as a doubly-fed induction generator, having a rotor and a stator. Thus, the method includes operating rotor connections of the rotor of the generator in a wye configuration during a first rotor speed operating range. Further, the method includes monitoring a rotor speed of the rotor of the generator. Thus, the method also includes transitioning the rotor connections of the rotor from the wye configuration to a delta configuration if the rotor speed changes to a second rotor speed operating range.

Electrical power circuit and method of operating same

Systems and methods for controlling operation of a power converter based on grid conditions are provided. In particular, a first gating voltage can be applied to a switching element of a power converter associated with a wind-driven power generation system. The first gating voltage can be greater than a threshold voltage for the switching element. A grid event associated with an electrical grid coupled to the power generation system can be detected. A second gating voltage can be applied to the gate of the switching element during the detected grid event. The second gating voltage can be greater than the first gating voltage.

Controlling operation of a power converter based on grid conditions

Systems and methods for regulating a short circuit current associated with an energy storage system are provided. In one embodiment, an energy storage system can include an energy storage device and a switching power supply coupled to the energy storage device. The energy storage system can further include one or more cables configured to couple the energy storage device to the switching power supply, and a magnetic framework positioned proximate the one or more cables. The magnetic framework can include one or more magnetic structures and can span at least a portion of the length of the cables. The one or more cables are positioned in a physical arrangement that, in conjunction with the magnetic framework, facilitates a selected inductance between the cables.

Cable arrangement of an energy storage system

Systems and methods for grounding power generation systems with silicon carbide MOSFET power converters are provided. A power generation system can include a power generator comprising a multiphase rotor configured to generate multiphase alternating current power at a first voltage and a power converter comprising one or more silicon carbide MOSFETs and an isolation transformer. The power converter can be configured to convert the multiphase alternating current power from the power generator at the first voltage to multiphase alternating current power at a second voltage. The power generation system can be electrically grounded to shunt a leakage current associated with the isolation transformer of the power converter to a ground.

Grounding scheme for power converters with silicon carbide MOSFETs

Systems and methods for controlling operation of one or more auxiliary circuits in a wind turbine system are provided. For instance, a grid event associated with the wind turbine system can be detected. In response to the grid event, a control signal can be provided to an auxiliary circuit breaker of the wind turbine system. The auxiliary circuit breaker can be associated with one or more auxiliary circuits that are not directly in a power production path of the wind turbine system. The auxiliary circuit breaker can disconnect the one or more auxiliary circuits from the grid based at least in part on the control signal.

Wind turbine auxiliary circuit control

Systems and methods for protecting the redundancy of inverter blocks are provided. In one example implementation, a system can include a plurality of inverter blocks. Each inverter block can include a first conversion entity configured to convert DC power to AC power, a second conversion entity configured to convert AC power to DC power, and a third conversion entity configured to convert DC power to AC power. An isolation transformer can be coupled between the first conversion entity and the second conversion entity. The system includes an inverter block switching element coupled to an output of each inverter block. A protection element is disposed in each inverter block. The system includes one or more control devices configured to isolate at least one of the plurality of inverter blocks based at least in part on a status of the protection element disposed in the inverter block.

Protection for redundancy of isolated inverter blocks

Systems and methods for cooling one or more electrical components of a current conversion device of a renewable energy power system (e.g. a wind turbine or a solar power system) are disclosed. In one embodiment, the system includes an immersion tank comprising a cooling medium, a heat exchanger, and a pumping device. One or more of the electrical components are at least partially submerged within the cooling medium, which has a predetermined dielectric constant. The heat exchanger is in fluid communication with the cooling medium of the immersion tank. Thus, the pumping device is configured to circulate the cooling medium between the immersion tank and the heat exchanger to remove heat from the one or more electrical components.

System and method for cooling electrical components of a power converter

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York, PA, United States of America

Harold Robert Schnetzka