Maja H Todorovic

US Patent:

8295442, Oct 23, 2012

Filed:

Jul 28, 2010

Appl. No.:

12/845541

Inventors:

Antonio Caiafa - Niskayuna NY, US
Maja Harfman Todorovic - Niskayuna NY, US
Joseph Leclaire Reynolds - Amsterdam NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

H05G 1/08
H05G 1/52
H01J 35/14
H01J 35/30
H01J 29/76

US Classification:

378137, 378 16, 378 91, 378138, 315364, 315399, 315408

Abstract:

An apparatus and method for an electron beam manipulation coil for an x-ray generation system includes the use of a control circuit. The control circuit includes a first low voltage source, a second low voltage source, and a first switching device coupled in series with the first low voltage source and configured to create a first current path with the first low voltage source when in a closed position. The control circuit also includes a second switching device coupled in series with the second low voltage source and configured to create a second current path with the second low voltage source when in a closed position and a capacitor coupled in parallel with an electron beam manipulation coil and positioned along the first and second current paths.

US Patent:

8330299, Dec 11, 2012

Filed:

Jun 29, 2011

Appl. No.:

13/171683

Inventors:

Robert Louis Steigerwald - Burnt Hills NY, US
Ahmed Elasser - Latham NY, US
Juan Antonio Sabate - Gansevoort NY, US
Maja Harfman Todorovic - Niskayuna NY, US
Mohammed Agamy - Niskayuna NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

H01H 9/54

US Classification:

307140

Abstract:

A power generation system configured to provide direct current (DC) power to a DC link is described. The system includes a first power generation unit configured to output DC power. The system also includes a first DC to DC converter comprising an input section and an output section. The output section of the first DC to DC converter is coupled in series with the first power generation unit. The first DC to DC converter is configured to process a first portion of the DC power output by the first power generation unit and to provide an unprocessed second portion of the DC power output of the first power generation unit to the output section.

US Patent:

20080164961, Jul 10, 2008

Filed:

Oct 3, 2007

Appl. No.:

11/866849

Inventors:

William James Premerlani - Scotia NY, US
Kathleen Ann O'Brien - Albany NY, US
John Norton Park - Rexford NY, US
Owen Jannis Schelenz - Schenectady NY, US
Maja Harfman Todorovic - College Station TX, US

International Classification:

H01H 75/00
H01H 83/10

US Classification:

335 7, 335 11, 335 20

Abstract:

A system that includes micro-electromechanical system switching circuitry is provided. The system may include a first over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a voltage level across contacts of the micro-electromechanical system switching circuitry during a first switching event, such as a turn-on event. The system may further include a second over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a current flow through the contacts of the micro-electromechanical system switching circuitry during a second switching event, such as a turn-off event.

US Patent:

20120027165, Feb 2, 2012

Filed:

Jul 28, 2010

Appl. No.:

12/845579

Inventors:

Antonio Caiafa - Niskayuna NY, US
Maja Harfman Todorovic - Niskayuna NY, US
Joseph Leclaire Reynolds - Amsterdam NY, US

International Classification:

A61B 6/03
H01J 35/14

US Classification:

378 16, 378138

Abstract:

An apparatus and method for magnetic control of an electron beam includes a control circuit having a first low voltage source and a second low voltage source. The control circuit also includes a first switching device coupled in series with the first low voltage source and configured to create a first current path with the first low voltage source when in a closed position and a second switching device coupled in series with the second low voltage source and configured to create a second current path with the second low voltage source when in a closed position. The control circuit further includes a capacitor coupled in parallel with an electron beam manipulation coil and positioned along the first and second current paths and a current source circuit electrically coupled to the electron beam manipulation coil and constructed to generate an offset current in the first and second current paths.

US Patent:

20120274139, Nov 1, 2012

Filed:

Apr 29, 2011

Appl. No.:

13/097196

Inventors:

Mohammed Agamy - Niskayuna NY, US
Ahmed Elasser - Latham NY, US
Juan Antonio Sabate - Ganesvoort NY, US
Anthony William Galbraith - Wirtz VA, US
Maja Harfman Todorovic - Niskayuna NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

H02J 1/12

US Classification:

307 71

Abstract:

A distributed photovoltaic (PV) power plant includes a plurality of distributed dc-dc converters. The dc-dc converters are configured to switch in coordination with one another such that at least one dc-dc converter transfers power to a common dc-bus based upon the total system power available from one or more corresponding strings of PV modules. Due to the coordinated switching of the dc-dc converters, each dc-dc converter transferring power to the common dc-bus continues to operate within its optimal efficiency range as well as to optimize the maximum power point tracking in order to increase the energy yield of the PV power plant.

US Patent:

20140001856, Jan 2, 2014

Filed:

Jun 29, 2012

Appl. No.:

13/538819

Inventors:

Mohammed Agamy - Niskayuna NY, US
Ahmed Elasser - Latham NY, US
Maja Harfman Todorovic - Niskayuna NY, US

Assignee:

GENERAL ELECTRIC COMPANY - SCHENECTADY NY

International Classification:

H02M 3/155
H02J 1/00

US Classification:

307 43, 323311

Abstract:

A partial power converter includes a converter leg including an upper portion comprising at least one diode connected to a positive output node of an output terminal of the partial power converter and a lower portion comprising at least two switches connected in series with each other and with the at least one diode and to a negative output node of the output terminal of the partial power The partial power converter also includes at least one flying capacitor connected between the at least two switches at a first end and to either of the upper portion of the converter leg or the positive output node of the partial power converter at a second end.

US Patent:

20200235557, Jul 23, 2020

Filed:

Apr 8, 2020

Appl. No.:

16/843265

Inventors:

- Schenectady NY, US
Rajib Datta - Niskayuna NY, US
Ravisekhar Nadimpalli Raju - Clifton Park NY, US
Maja Harfman- Todorovic - Schenectady NY, US
Philip Michael Cioffi - Schaghticoke NY, US

International Classification:

H02G 5/00
H02M 7/00
H01G 9/26
H02B 1/20
H05K 7/02

Abstract:

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.

US Patent:

20190006831, Jan 3, 2019

Filed:

Sep 6, 2018

Appl. No.:

16/124169

Inventors:

- Schenectady NY, US
Rajib Datta - Niskayuna NY, US
Ravisekhar Nadimpalli Raju - Clifton Park NY, US
Maja Harfman- Todorovic - Schenectady NY, US
Philip Michael Cioffi - Schaghticoke NY, US

International Classification:

H02G 5/00
H05K 7/02
H02M 7/00
H02B 1/20
H01G 2/02

Abstract:

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.