General Electric Company

General Electric Corporation Gmbh

Ge Grid Solutions LLC

Ramanujam Ramabhadran

John Stanley Glaser

Ahmed Elasser

Robert James Thomas

Kum-Kang Huh

Yehuda Daniel Levy

Gang Yao

Danijel Maricic

Cong Li

Manoj Ramprasad Shah

Michael James Hartman

Bruce Richard Roberts

Ruxi Wang

Yanzhe Yang

Mohammed Agamy

Jeffrey Joseph Nasadoski

Maja Harfman-Todorovic

Krishna Mainali

Han Peng

Zheyu Zhang

Herman Wiegman

Christopher James Kapusta

Stanton Earl Weaver, Jr

Charles Erklin Seeley

Douglas Carl Hofer

Ravisekhar Nadimpalli Raju

Glenn Scott Claydon

Karim Younsi

Timothy John Sommerer

Ljubisa Dragoljub Stevanovic

Pradeep Vijayan

Charles E Cook

Maja Harfman Todorovic

Badri Narayan Ramamurthi

Kenneth McClellan Rush

Xu She

Andrey Meshkov

Mohamed Cherif Ghanem

Brian Lynn Rowden

Eric Lavigne

William George Earls

Luca Tonini

Robert P Thomas

Mark Wayne McWaters

Hao Tu

Jason Fredrick Trotter

Sayan Acharya

Shimon Khananshvili

Tomas Sadilek

Alvaro Alexander Briceno

Kenneth Mcclellan Rush

Herman Luca Norbert Wiegman

A power system is provided. The power system includes a multi-level DC/DC converter electrically coupled with a terminal of a voltage source, such as a battery. The power system includes an EMI filter network having EMI shunt filters electrically coupled between the terminals of the battery and a reference frame or grounding system. The EMI shunt filters each include at least one of a first order filter and a second order filter. The elements of these ordered filters can be used to shunt common mode electric current to less-resistive paths, limit voltage, and reduce common mode voltage noise to ultimately reduce the common mode effects in the power system.

EMI noise reduction circuit for DC/DC converter

A multilevel converter system is provided. The system includes a converter and a converter controller interfaced with the converter. The converter controller includes a voltage loop, a current loop, and a voltage compensation loop. The voltage loop is configured to receive first and second voltages from the first and second segments of the converter and a reference voltage. The current loop is configured to receive a current output of the converter, a reference current, and a balancing reference current. The voltage compensation loop is configured to receive the first and second voltages and a sign signal. The converter controller is configured to generate first and second pulse-width modulation (PWM) signals using output signals from the current loop and the output compensation signals from the voltage compensation loop. The PWM signals are configured to control the switches of the converter and to balance the first voltage with the second voltage.

Voltage balance systems and methods for multilevel converters

A customizable power conversion system () is configured to operate with multiple alternating current (AC) and direct current (DC) power sources () and supplies multiple AC and DC loads (). The customizable power conversion system is also configured to be assembled from a plurality of customizable power converters (), each of which is configured to function as a building block of the customizable power conversion system. More particularly, each customizable power converter may be configured as any DC/DC, DC/AC, AC/DC, or AC/AC converter, such as any of i) an inverter, ii) a DC/DC converter for use with a photovoltaic (PV) array (or string of PV arrays), and iii) a DC/DC converter for use with an energy storage element (e.g., a battery or battery string).

Customizable power converter and customizable power conversion system

A system includes a magnetic material supply for regulating a magnetic material flow rate of a magnetic material and a binder material supply for regulating a binder material flow rate of a binder material. A nozzle is configured for depositing a deposition mixture of the magnetic material and the binder material on a surface and a preheater is configured to preheat the deposition mixture before depositing on the surface. A controller is in operative communication with the magnetic material supply, the binder material supply, and the preheater. The controller is configured to receive an inductor core design file that represents a geometry and a magnetic permeability distribution of an inductor core, move the nozzle to one or more deposition locations, and adjust the magnetic material flow rate to the binder material flow rate to achieve a deposition mixture having a desired magnetic permeability at the deposition locations.

System for manufacturing an inductor core

Aspects of the present disclosure are directed toward designs and methods of improving driving of switching devices. One proposed solution to improving driving of switching devices is an auxiliary control circuit that selectively guides the switching device through at least one switching region, permitting an improved operation of the switching device.

Miller transition control gate drive circuit

Controlling an energy storage system includes providing one or more constraints to an optimization problem algorithm, determining by the optimization problem algorithm a DC bus voltage value that results in an minimum total power dissipation for the plurality of power converters, calculating a respective control variable for each of the respective plurality of power converters based on the determined DC bus voltage value, and generating control processor executable instructions to implement control of each of the plurality of power converters to achieve the calculated respective control variable. A system for implementing the method and a non-transitory computer-readable medium are also disclosed.

Control system and method for an energy storage system

The present disclosure relates to gas turbine engine operation in which an igniter assembly is provided with an electrical energy input (e.g., an electrical waveform) that is configured to increase a likelihood of igniting a fuel-air mixture surrounding the igniter assembly. In certain embodiments, the igniter assembly is supplied with an augmented electrical waveform that may reduce a quantity of sparks generated by the igniter assembly before successful light-off (e.g., ignition) of the fuel-air mixture is achieved (e.g., as compared to a quantity of sparks generated to achieve ignition by an igniter assembly that receives an electrical energy input in the form of a conventional electrical waveform). Accordingly, the augmented electrical waveform may reduce wear (e.g., via oxidation) on electrodes of the igniter assembly, such as a primary electrode (e.g., a center electrode) and a secondary electrode (e.g., an outer shell electrode) disposed about the primary electrode.

Electrical waveform for gas turbine igniter

A modular electronics package is disclosed that includes a first and second electronics packages, with each of the first and second electronics packages including a metallized insulating substrate and a solid-state switching device positioned on the metallized insulating substrate, the solid-state switching device comprising a plurality of contact pads electrically coupled to the first conductor layer of the metallized insulating substrate. A conductive joining material is positioned between the first electronics package and the second electronics package to electrically connect them together. The first electronics package and the second electronics package are stacked with one another to form a half-bridge unit cell, with the half-bridge unit cell having a current path through the solid-state switching device in the first electronics package and a close coupled return current path through the solid-state switching device in the second electronics package in opposite flow directions.

Low inductance stackable solid-state switching module and method of manufacturing thereof

According to various embodiments, a DC/DC conversion system is disclosed. The DC/DC conversion system includes a boost converter coupled to a plurality of parallel buck converters. The boost converter and plurality of buck converters each include an inductor, where the inductors are magnetically coupled to each other. The DC/DC conversion system further includes a control system configured to control the boost converter and plurality of buck converters such that combined duty cycles of the plurality of buck converters are about equal to a duty cycle of the boost converter and the duty cycles of the plurality of buck converters are modulated out of phase.

System and method for a magnetically coupled inductor boost and multiphase buck converter with split duty cycle

A method of manufacturing an inductor core includes controlling a flow of magnetic material and a flow of binder material to a nozzle such that the flow magnetic material merges with the flow of binder material at a focal point of a preheater, preheating the magnetic material and the binder material by energizing the preheater, mixing the magnetic material and the binder material according to a ratio based on a magnetic permeability distribution of the inductor core, and depositing the magnetic material and the binder material on a surface to form the inductor core having three layers with recessed patterns defined between the layers for receiving a coil.

Additive manufacturing-based low-profile inductor

A power electronics circuit is disclosed that includes a switching circuit comprising a first solid-state device coupled in series with a second solid-state device, with at least the first solid-state device comprising a solid-state switch having a gate terminal. The power electronics circuit also includes a current sense transformer positioned between the first and second solid-state devices and configured to sense a current flowing on a conductive trace connecting the first and second solid-state devices, and a controller coupled to the switching circuit and the current sense transformer so as to be in operable communication therewith. The controller is programmed to receive a current sense signal from the current sense transformer indicative of the current flowing on the conductive trace and modulate a gate voltage to the gate terminal of the first solid-state device based on the received current sense signal, so as to control switching thereof.

System and method for rapid current sensing and transistor timing control

Systems and methods provided herein relate to a gate drive circuit for controlling operation of a wide bandgap semiconductor switch. The systems and methods receive a control signal and configuring an operation signal configured to activate a wide bandgap switch (WBG switch). A profile of the operation signal being based on electrical characteristics of first and second shaping circuits. The systems and methods further deliver the operation signal to the WBG switch.

Systems and methods for a gate drive circuit

Systems and methods for providing automatic short circuit protection in an electrical system via a switching device. In some embodiments, the switching device includes a switching transistor that selectively switches between an open position and a closed position based at least in part on a switching control signal, for example, to facilitate converting electrical power with first electrical characteristics output into electrical power with the second electrical characteristics. Additionally, the switching device includes a protection transistor electrically coupled in series with the switching transistor, in which a constant gate voltage is supplied to the protection transistor to maintain the first protection transistor in the closed position during operation of the power converter; and the protection transistor automatically limits current flow through the first switching device by reducing a gate voltage applied to the switching transistor when a short circuit is expected to be present in the electrical system.

Automatic short circuit protection switching device systems and methods

A resonant converter includes a primary stage having first and second switches coupled in series, a controller coupled to the first switch and the second switch to control operation thereof, a first transformer comprising a primary coil coupled to a node between the first and second switches, and a resonant inductor coupled to the primary coil of the first transformer. The resonant converter also includes a secondary stage having a second transformer formed of a primary coil coupled to the resonant inductor and a secondary coil comprising first and second coil sections, a third switch coupled to the first coil section of the secondary coil, and a fourth switch coupled to the second coil section of the secondary coil. A switch drive circuit is provided to drive the third and fourth switches for synchronous rectification, with the switch drive circuit comprising a secondary coil of the first transformer.

Circuits and methods for synchronous rectification in resonant converters

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Niskayuna, NY, United States of America

Ramanujam Ramabhadran