General Electric Company

General Electric Deutschland Holding Gmbh

Zunum Aero, Inc.

Ge Energy Power Conversion Technology Gmbh

General Electric Renovables Espana, S.l.

Rajib Datta

Ravisekhar Nadimpalli Raju

Allen Michael Ritter

Richard S Zhang

Kum Kang Huh

Luis Jose Garces

Mohamed Osama

Vandana Prabhakar Rallabandi

Christof Martin Sihler

Xu She

Kunlun Chen

Govardhan Ganireddy

Di Pan

John D D'Atre

Haiqing Weng

Ranjan Kumar Gupta

Robert Gregory Wagoner

Ljubisa Dragoljub Stevanovic

Di Zhang

Rui Zhou

John Russell Yagielski

Rajni Kant Burra

Waleed M Said

Robert Allen Seymour

Philip Michael Cioffi

Saurabh Shukla

Nilanjan Ray Chaudhuri

John Leo Bollenbecker

Vishnu Mahadeva Iyer

Maja Harfman-Todorovic

Hridya Ittamveettil

Matt Feddersen

Shashank Natesh

Michael Joseph Schutten

Robert Roesner

Mark Eugene Shepard

Fengfeng Tao

Paul Michael Szczesny

Cyrus David Harbourt

Mark Dame

Joseph Taher Mossoba

Sanjay Vijayaraghavan

Xianghui Huang

Yukai Wang

Tannous Frangieh

Jian Dai

Han Xiong

Manguelle Joseph Song

Ravisekhar NadimpalliRaju

Ravisekhar Nadimpal Raju

Allen Michel Ritter

Libing Wang

Alankrita Singh

Nilanjan Ray Chaundhuri

Christof Shiler

A power converter assembly includes a housing, a cold plate in the housing, and a set of power converter components on the cold plate. The cold plate is configured to receive a coolant. A first medium in the housing surrounds the cold plate and components. An expandable heat transfer structure is attached to one of the cold plate and the housing.

Thermal management system for a power converter

A power system including a power converter system and an electric machine is provided. In one aspect, the power converter system has first and second switching elements. The electric machine includes a first multiphase winding electrically coupled with the first switching elements and a second multiphase winding electrically coupled with the second switching elements. The first and second multiphase windings are arranged and configured to operate electrically opposite in phase with respect to one another. One or more processors control the first switching elements to generate first pulse width modulated (PWM) signals based on received voltage commands to render a first common mode signal and also control the second switching elements to generate second PWM signals based on received voltage commands to render a second common mode signal. The rendered first and second common mode signals have the same or similar waveform with opposite polarity with respect to one another.

Reduction of common mode emission of an electrical power converter

A multilevel power converter includes a plurality of switches, a first DC link capacitor, a second DC link capacitor, and one or more processors configured to: generate, for a duty cycle of the multilevel power converter, a pulse width modulated pulse pattern in accordance with a reduced common mode voltage scheme; modify the pulse width modulated pulse pattern to render a modified pulse pattern; and cause the plurality of switches to implement the duty cycle based at least in part on the modified pulse pattern to render a common mode voltage pulse to balance voltages at the first DC link capacitor and the second DC link capacitor.

Reduced common mode voltage pulse width modulation switching scheme with capacitor voltage balancing for a multilevel power converter

An electric power system for a vehicle includes at least one electric machine, one or more power rectifiers, and a plurality of DC channels. The at least one electric machine includes a plurality of tooth-wound multi-phase windings that are substantially magnetically decoupled, and the at least one electric machine is mechanically balanced even if one of the plurality of windings is de-energized. The one or more power rectifiers are configured to produce rectified power from the power generated by the at least one electric machine. The plurality of DC channels are formed after the at least one power rectifier and are configured to provide DC power to one or more loads within a vehicle.

Electric power system for a vehicle

This invention pertains to reliable, lightweight and efficient hybrid electric powertrain and components thereof to power hybrid electric aircraft from one or more sources of electrical energy. In particular, a novel architecture is proposed for power panels that receive, condition and distribute high levels of electrical power to and from the propulsion electric motors and the one or several sources of electrical energy. Systems and methods for architecting the power panels using efficient, reusable and modular power electronics building blocks (PEBBs) is described, along with additional systems and methods for the optimal control of the power panels and components thereof. In addition, novel systems and methods are described for the efficient and lightweight thermal management for hybrid electric powertrain components, ranging from distribution manifolds for the powertrain or power panels, to micro fluid channels for cooling electronics with extreme heat flux. Additional disclosures are made pertaining to fail-safe architectures for plug-in series hybrid-to-electric powertrain, to the efficient in-ground charging of the stored electric energy sources, to the efficient control of permanent magnet generators, and to novel inverter technologies for the hybrid electric powertrain.

Systems and methods for implementing lightweight and reliable hybrid or electric powertrains for aircraft

An electric power conversion system comprising: an alternating current (AC) source comprising a plurality of AC terminals for conducting AC power; a voltage source electrically coupled to the AC terminals; and a controller operably coupled to the voltage source, the controller being configured to: operate the voltage source to apply a fault reducing voltage at the AC terminals that reduces an AC line-to-line fault current (I).

Fault current mitigation for an electrical power conversion system

A wind farm is presented. The wind farm includes a plurality of wind turbine stations, where each wind turbine station includes a wind turbine and a generator sub-system. The generator sub-system includes a doubly-fed induction generator configured to generate an alternating current voltage and a wind turbine station power converter. The wind farm further includes a power collection sub-system that includes a power bus and a sub-station power converter. The wind farm also includes a control system configured to determine a wind speed metric, estimate a corresponding frequency metric, calculate a desirable frequency based on the wind speed metric and frequency compensation ranges of the wind turbine station power converters, and generate and communicate control commands to the sub-station power converter based on the desirable frequency to allow the sub-station power converter to update a line frequency of a power bus voltage based on the desirable frequency.

Wind farm topology and method of operating the same

An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.

Low inductance busbar systems and methods

Power converters for use in wind turbine systems are included. For instance, a wind turbine system can include a wind driven doubly fed induction generator having a stator and a rotor. The stator is configured to provide a medium voltage alternating current power on a stator bus of the wind turbine system. The wind turbine system includes a power converter configured to convert a low voltage alternating current power provided by the rotor to a medium voltage multiphase alternating current output power suitable for provision to an electrical grid. The power converter includes a plurality conversion modules. Each conversion module includes a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the wind turbine system.

Power converter for doubly fed induction generator wind turbine systems

Power converters for use in energy systems are included. For instance, an energy system can include an input power source configured to provide a low voltage direct current power. The energy system can include a power converter configured to convert the low voltage direct current power provided by the input power source to a medium voltage multiphase alternating current output power suitable for provision to an alternating current power system. The power converter can include a plurality conversion modules. Each conversion module includes a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the energy system.

Power converter for energy systems

A power conversion system may include a plurality of power devices and a sensor operably coupled to at least one of the plurality of power devices and configured to detect a voltage, current, or electromagnetic signature signal associated with the plurality of power devices. The power converter may also include circuitry operably coupled to the plurality of power devices and the sensor. The circuitry may send a respective gate signal to each respective power device of the plurality of power devices, such that each respective gate signal is delayed by a respective compensation delay that is determined for the respective power device based on a respective time delay of the respective power device and a maximum time delay of the plurality of power devices.

Systems and methods for controlling a plurality of power semiconductor devices

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Niskayuna, NY, United States of America

Rajib Datta