General Electric Company

Delta Electronics, Inc.

Ge Precision Healthcare LLC

Ge Aviation Systems Limited

Abb S.p.a.

Ruxi Wang

Juan Antonio Sabate

Peter Mantovanelli Barbosa

Satish Prabhakaran

Chi Zhang

Zhiyu Shen

Fengfeng Tao

Tomas Sadilek

Xiaohu Liu

Yash Veer Singh

Cong Li

Krishna Mainali

Manoj Ramprasad Shah

Yungtaek Jang

Di Zhang

Sheng-Hua Li

Fei Xu

Ramanujam Ramabhadran

Yanzhe Yang

Karthik Kumar Bodla

Pengcheng Zhu

Gary Dwayne Mandrusiak

Melissa Freeman

Song Chi

Han Peng

Ying Mei

Boyi Zhang

William James Premerlani

Tao Wu

Antonio Caiafa

Douglas Carl Hofer

Peter Almern Losee

Eladio Clemente Delgado

William Edward Burdick, Jr

Pradeep Vijayan

Kum-Kang Huh

Naveenan Thiagarajan

Yan Pan

Xi Lu

Margaret Ann Wiza

Feng Chen

Anoop Jassal

Jiangbiao He

Douglas John Link

Louis Martin Frigo

William John Bonneau

Hui-Hsin Lin

Syedsaad Ali

Chung-Hwa Wei

Jianguo Xiao

Kanakasabai Viswanathan

Xiaosong Kang

Raymond John Nicholas

Juan Manuel Rivas Davila

Jiale Xu

Satyaki Mukherjee

Kevin Patrick Rooney

Raymond Nicholas

William Edward Burdick Jr

The present disclosure provides a printed circuit board (PCB) based planar winding structure for a main power transformer and/or an auxiliary power need. The PCB-based planar winding structure can confine electric field through magnetic core potential control and thus create partial discharge (PD) free design for medium voltage (MV) applications. Meanwhile, the winding structure can be formed in the PCB manufacturing process to create a more modular and reliable structure, thereby enhancing manufacturability. Techniques, such as termination treatment, primary and secondary winding arrangements, etc., can be used to control the electrical stress in the medium voltage applications.

Planar winding structure for power transformer

An electric power source includes: a battery defining a state of charge; a converter in electrical communication with the battery; and a controller in operable communication with the converter, the controller including a compensation toggle circuit configured to provide a compensation toggle value based on a power output of the battery; a dynamic droop control circuit configured to receive the compensation toggle value and switch an output droop value of the dynamic droop control circuit from an upper output droop measurement to a lower output droop measurement, wherein the lower output droop measurement is based on the state of charge of the battery.

Battery state of charge compensation

The present disclosure provides a high voltage device built from modular low voltage cells. Each low voltage cell includes a plurality of low voltage semiconductor devices and one or more low voltage passive components. Each cell can be a current-bidirectional two-quadrant switch or a four-quadrant switch. All the cells may be identical and controlled with a delay time in between. Therefore, the total on and off time of the high voltage device can be controlled to reduce the output equivalent dv/dt. The cell's voltage balancing can be achieved through a control algorithm disclosed herein.

High voltage device built from modular low voltage devices and operation methods thereof

The present disclosure provides a motor drive integrated on-board charger to reduce the quantity of components in an electric system of an electric vehicle. Reduction of components is achieved by utilizing the motor and the motor driving inverter as a part of the on-board charger in the charging mode. By controlling relays, electrical connections of the system may be reconfigured according to its mode of operation. In one aspect, the motor and the motor driving inverter play the roles of a boost PFC, a current regulator, or both.

Electric system of electric vehicle

A switch circuit electrically connected to a power source and a first control source and including a plurality of switch bridge arms is provided. Each of the plurality of switch bridge arms includes a first switch and a second switch electrically connected in series. A loop formed by the first switch, the second switch and the power source is defined as a power loop. A loop formed by the first control source and the first switch is defined as a first control loop. A first mutual inductance is formed between the power loop and the first control loop. Among all the first switches, the first switch with the longer power loop has the smaller first mutual inductance.

Switch circuit and power module

The present disclosure provides a three-phase AC/DC converter aiming for low input current harmonic. The converter includes an input stage for receiving a three-phase AC input voltage, an output stage for at least one load, and one or more switching conversion stages, each stage including a plurality of half bridge modules. The switches in each module operate with a substantially fixed 50% duty cycle and are connected in a specific pattern to couple a DC-link and a neutral node of the input voltage. The AC/DC converter further includes one or more controllers adapted to vary the switching frequency of the switches in the switching conversion stages based on at least one of load voltage, load current, input voltage, and DC-link voltage. The converter can also include one or more decoupling stages, such as, inductive components adapted to decouple the output stage from the switching conversion stages.

Multi-phase AC/DC converter

A component includes a magnetic core having a body formed of a first material, defining a first opening and a second opening thereon. A duct formed of a second material extends at least partially through the body between the first opening and the second opening. The first opening and the second opening are in fluid communication by way of the duct.

Magnetic component and method of forming

The present disclosure provides a series resonant converter and its corresponding control method. In one aspect, the series resonant converter includes m (m=1,2,3, . . . ) sets of primary side stages in parallel, wherein each primary side stage is identical and includes n (n=2,3, . . . ) stacked element circuits, where the primary side stages receive an input voltage; n&#xd7;m resonant networks coupled to the primary side stages; n&#xd7;m transformers having n&#xd7;m primary side windings and n&#xd7;m secondary side windings, where the primary side windings are coupled to the n&#xd7;m resonant networks; p (p=1,2,3, . . . ) sets of secondary side stages in parallel, wherein each secondary side stage is identical and includes q (q=n&#xd7;m/p) stacked element circuits, where the secondary side stages are coupled to n&#xd7;m secondary side windings; and a control block controlling the primary side switches according to the output voltage, input voltage and input capacitor voltages.

DC-dC resonant converter and control method thereof

The present disclosure provides a series resonant converter and its corresponding control method. In one aspect, the series resonant converter includes m (m=1, 2, 3, . . . ) sets of primary side stages in parallel, wherein each primary side stage is identical and includes n (n=2, 3, . . . ) stacked element circuits, where the primary side stages receive an input voltage; n&#xd7;m resonant networks coupled to the primary side stages; n&#xd7;m transformers having n&#xd7;m primary side windings and n&#xd7;m secondary side windings, where the primary side windings are coupled to the n&#xd7;m resonant networks; p (p=1, 2, 3, . . . ) sets of secondary side stages in parallel, wherein each secondary side stage is identical and includes q (q=n&#xd7;m/p) stacked element circuits, where the secondary side stages are coupled to n&#xd7;m secondary side windings; and a control block controlling the primary side switches according to the output voltage, input voltage and input capacitor voltages.

DC-DC resonant converter and control method thereof

A power supply system includes a set of power supply units, each power supply unit arranged electrically in series and defining a common power supply, each power supply unit having a power module and a selective bypass for selectively bypassing the respective power module. The power supply system can meet a power demand.

Dynamic power supply 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

A magnetic unit is presented. The magnetic unit includes a magnetic core. The magnetic core includes a first limb and a second limb disposed proximate to the first limb, where a gap is formed between the first limb and the second limb. The magnetic unit further includes a first winding wound on the first limb. Moreover, the magnetic unit includes a conductive element disposed facing an outer periphery of the first winding, where the conductive element is configured to control a fringing flux generated at the gap. Further, the magnetic unit includes a heat sink operatively coupled to the conductive element, where the conductive element is further configured to transfer heat from at least one of the conductive element and the first winding to the heat sink. Moreover, a high frequency power conversion system and a method of operation of the magnetic unit is also presented.

Magnetic unit and an associated method thereof

This disclosure regards a magnetic resonance imaging system including a scanner, and gradient drivers. The scanner is to be implemented within a scan room that is shielded from electromagnetic interference. Gradient coils are designed to create a linear gradient in the magnetic field generated in the scanner by a primary magnet. These coils are energized by gradient drivers. The gradient drivers use transformers and other electrical devices in a switching stage configured to generate pulse-width-modulated power. The transformers may have non-magnetic cores to facilitate implementing the gradient drivers within the scan room. The gradient drivers also use a filtering stage which uses inductors and other electrical devices to smooth the pulse-width-modulated power. The inductors within the filters may have non-magnetic cores to facilitate implementing the gradient driver within the scan room. Additionally, an inductor with a hollow wire may be used to circulate fluid to facilitate cooling the gradient driver.

Magnetic resonance imaging switching power amplifier system and methods

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Cohoes, NY, United States of America

Ruxi Wang