Patents by Inventor Said El-Barbari
Said El-Barbari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240088812Abstract: A control device for a three-phase inverter of a vehicle prime mover is configured to activate active discharge of a DC link of the inverter and at the same time to switch on the lower half-bridge switches of the inverter during the active discharge, and to switch on an upper half-bridge switch of the inverter. The three-phase inverter has three half-bridges, each having an upper half-bridge switch and a lower half-bridge switch.Type: ApplicationFiled: January 18, 2021Publication date: March 14, 2024Inventors: Said EL-BARBARI, Christian SANABRIA VON WALTER
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Publication number: 20230261599Abstract: A drive system includes an electric machine with a rotor having an externally excited rotor winding, and a stator having stator winding sets, each with at least three stator windings; a control unit controlling the electric machine supply the rotor winding with a first current signal, and the stator windings with different current phases of a multi-phase second current signal, thus producing a rotary magnetic field generating a torque on the rotor; at least one inverter, the multi-phase current signal being provided based on the at least one inverter; and at least one rectifier providing a DC signal, the first current signal being based at least on the DC signal and on an AC harmonics component. Harmonics of a current phase of the multi-phase current signal are reduced based on the supply of the AC harmonics component.Type: ApplicationFiled: May 27, 2021Publication date: August 17, 2023Inventors: Said EL-BARBARI, Daniel GLOSE, Jovan KNEZEVIC
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Publication number: 20210396600Abstract: A method and an electronic device monitors the temperature of power electronics having at least one power transistor. In the method, during active operation of the power transistor, the drain-source voltage and the drain current of the transistor are measured and are used to calculate an on-state resistance. An instantaneous junction temperature of the power transistor is determined for monitoring the temperature on the basis of a predefined assignment. The predefined assignment is automatically recalibrated for future operation of the power transistor by automatically measuring in each case a pair of values of the instantaneous on-state resistance and an instantaneous temperature of the power electronics in each case at a plurality of different times outside active operation. These temperatures are measured at a location spatially spaced apart from the junction of the power transistor and are assumed to be junction temperatures prevailing at the respective time.Type: ApplicationFiled: June 21, 2021Publication date: December 23, 2021Inventor: Said EL-BARBARI
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Patent number: 10521005Abstract: A power converter includes primary and secondary bridges, a transformer, and a controller configured to generate a switching mode map that correlates each of a plurality of switching modes to a respective set of value ranges of system parameters of the power converter. The sets of system parameter value ranges are contiguous and non-overlapping across the switching mode map, each of the plurality of switching modes includes gate trigger voltage timings for commuting at least one of the primary and secondary bridges. The controller is configured to obtain a plurality of measured system parameter values, select from the switching mode map one of the plurality of switching modes that correlates to the set of system parameter values containing the plurality of measured system parameter values, and adjust gate trigger voltage timings of at least one of the primary and secondary bridges, according to the selected switching mode.Type: GrantFiled: March 28, 2019Date of Patent: December 31, 2019Assignee: GE GLOBAL SOURCING LLCInventors: Simon Herbert Schramm, Said Farouk Said El-Barbari, Stefan Schroeder, Zhihui Yuan
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Publication number: 20190220083Abstract: A power converter includes primary and secondary bridges, a transformer, and a controller configured to generate a switching mode map that correlates each of a plurality of switching modes to a respective set of value ranges of system parameters of the power converter. The sets of system parameter value ranges are contiguous and non-overlapping across the switching mode map, each of the plurality of switching modes includes gate trigger voltage timings for commuting at least one of the primary and secondary bridges. The controller is configured to obtain a plurality of measured system parameter values, select from the switching mode map one of the plurality of switching modes that correlates to the set of system parameter values containing the plurality of measured system parameter values, and adjust gate trigger voltage timings of at least one of the primary and secondary bridges, according to the selected switching mode.Type: ApplicationFiled: March 28, 2019Publication date: July 18, 2019Inventors: Simon Herbert Schramm, Said Farouk Said El-Barbari, Stefan Schroeder, Zhihui Yuan
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Patent number: 10305387Abstract: A single active bridge converter is provided. The single active bridge converter includes a transformer including a primary winding and a secondary winding, a primary side circuit electrically coupled to the primary winding and including an H bridge circuit, and a secondary side circuit electrically coupled to the secondary winding, the secondary side circuit including a switch configured to selectively short the transformer secondary winding.Type: GrantFiled: July 30, 2014Date of Patent: May 28, 2019Assignee: ABB Schweiz AGInventors: Said Farouk Said El-Barbari, Simon Herbert Schramm
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Patent number: 10296071Abstract: A power converter includes primary and secondary bridges, a transformer, and a controller configured to generate a switching mode map that correlates each of a plurality of switching modes to a respective set of value ranges of system parameters of the power converter. The sets of system parameter value ranges are contiguous and non-overlapping across the switching mode map, each of the plurality of switching modes includes gate trigger voltage timings for commuting at least one of the primary and secondary bridges. The controller is configured to obtain a plurality of measured system parameter values, select from the switching mode map one of the plurality of switching modes that correlates to the set of system parameter values containing the plurality of measured system parameter values, and adjust gate trigger voltage timings of at least one of the primary and secondary bridges, according to the selected switching mode.Type: GrantFiled: September 7, 2018Date of Patent: May 21, 2019Assignee: GE GLOBAL SOURCING LLCInventors: Simon Herbert Schramm, Said Farouk Said El-Barbari, Stefan Schroeder, Zhihui Yuan
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Publication number: 20190073021Abstract: A power converter includes primary and secondary bridges, a transformer, and a controller configured to generate a switching mode map that correlates each of a plurality of switching modes to a respective set of value ranges of system parameters of the power converter. The sets of system parameter value ranges are contiguous and non-overlapping across the switching mode map, each of the plurality of switching modes includes gate trigger voltage timings for commuting at least one of the primary and secondary bridges. The controller is configured to obtain a plurality of measured system parameter values, select from the switching mode map one of the plurality of switching modes that correlates to the set of system parameter values containing the plurality of measured system parameter values, and adjust gate trigger voltage timings of at least one of the primary and secondary bridges, according to the selected switching mode.Type: ApplicationFiled: September 7, 2018Publication date: March 7, 2019Inventors: Simon Herbert Schramm, Said Farouk Said El-Barbari, Stefan Schroeder, Zhihui Yuan
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Patent number: 10073512Abstract: A power converter includes primary and secondary bridges, a transformer, and a controller configured to generate a switching mode map that correlates each of a plurality of switching modes to a respective set of value ranges of system parameters of the power converter. The sets of system parameter value ranges are contiguous and non-overlapping across the switching mode map, each of the plurality of switching modes includes gate trigger voltage timings for commuting at least one of the primary and secondary bridges. The controller is configured to obtain a plurality of measured system parameter values, select from the switching mode map one of the plurality of switching modes that correlates to the set of system parameter values containing the plurality of measured system parameter values, and adjust gate trigger voltage timings of at least one of the primary and secondary bridges, according to the selected switching mode.Type: GrantFiled: November 19, 2014Date of Patent: September 11, 2018Assignee: General Electric CompanyInventors: Simon Herbert Schramm, Said Farouk Said El-Barbari, Stefan Schroeder, Zhihui Yuan
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Patent number: 9847731Abstract: A converter assembly and method are provided. The converter assembly includes a galvanic isolation device, first switching devices, and second switching devices. The switching devices are conductively coupled with each other and with opposite sides of the isolation device. The first switching devices control conduction of an input voltage, and the second switching devices control conduction of electric power. The first switching devices are configured to switch between an open state and a closed state at frequencies that are faster than frequencies at which the second switching devices switch between the open state and the closed state to control a shape of a waveform of the electric power.Type: GrantFiled: July 23, 2015Date of Patent: December 19, 2017Assignee: General Electric CompanyInventors: Farouk Said El-Barbari, Simon Herbert Schramm, Stefan Schroeder, Alvaro Jorge Mari Curbelo
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Patent number: 9831717Abstract: An uninterruptible power supply (UPS) and methods of operation are provided. The UPS includes a transformer configured to receive power from a utility. The transformer includes a primary winding, a secondary winding, and a tertiary winding. The UPS also includes a rectifier coupled to the secondary winding and an inverter coupled to an output of the rectifier, wherein a connection between the rectifier and the inverter defines a DC link. The inverter is configured to output a first regulated voltage configured to be provided to a load. The UPS further includes a voltage-boost converter coupled to the tertiary winding and is configured to output a second regulated voltage to be combined with the first regulated voltage.Type: GrantFiled: September 16, 2015Date of Patent: November 28, 2017Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Silvio Colombi, Said Farouk Said El-Barbari, Rajendra Naik, Prashanth Manikumar Chennamsetty
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Patent number: 9621104Abstract: Apparatus and method for registering conditions of performance in a photovoltaic array are provided. A group of neighboring photovoltaic modules may be arranged to sense a reference performance for a respective photovoltaic module of the photovoltaic array. Each of the neighboring photovoltaic modules may have a transmitter to transmit data indicative of the reference performance. The respective photovoltaic module may have a receiver to receive the data transmitted by the group of neighboring photovoltaic modules. A processor in the respective photovoltaic module may be provided to compare data indicative of its respective performance relative to the data received from the group of neighboring photovoltaic modules. The processor may be configured to register a condition of the performance of the respective photovoltaic module based on a result of the data comparison.Type: GrantFiled: May 13, 2013Date of Patent: April 11, 2017Assignee: General Electric CompanyInventors: Mark Ronald Lynass, Said Farouk Said El-Barbari, Lucian Vasile Stoica
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Publication number: 20170077746Abstract: An uninterruptible power supply (UPS) and methods of operation are provided. The UPS includes a transformer configured to receive power from a utility. The transformer includes a primary winding, a secondary winding, and a tertiary winding. The UPS also includes a rectifier coupled to the secondary winding and an inverter coupled to an output of the rectifier, wherein a connection between the rectifier and the inverter defines a DC link. The inverter is configured to output a first regulated voltage configured to be provided to a load. The UPS further includes a voltage-boost converter coupled to the tertiary winding and is configured to output a second regulated voltage to be combined with the first regulated voltage.Type: ApplicationFiled: September 16, 2015Publication date: March 16, 2017Inventors: VISWANATHAN KANAKASABAI, SILVIO COLOMBI, SAID FAROUK SAID EL-BARBARI, RAJENDRA NAIK, PRASHANTH MANIKUMAR CHENNAMSETTY
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Publication number: 20170025964Abstract: A converter assembly and method are provided. The converter assembly includes a galvanic isolation device, first switching devices, and second switching devices. The switching devices are conductively coupled with each other and with opposite sides of the isolation device. The first switching devices control conduction of an input voltage, and the second switching devices control conduction of electric power. The first switching devices are configured to switch between an open state and a closed state at frequencies that are faster than frequencies at which the second switching devices switch between the open state and the closed state to control a shape of a waveform of the electric power.Type: ApplicationFiled: July 23, 2015Publication date: January 26, 2017Inventors: Farouk Said El-Barbari, Simon Herbert Schramm, Stefan Schroeder, Alvaro Jorge Mari Curbelo
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Publication number: 20160139651Abstract: A power converter includes primary and secondary bridges, a transformer, and a controller configured to generate a switching mode map that correlates each of a plurality of switching modes to a respective set of value ranges of system parameters of the power converter. The sets of system parameter value ranges are contiguous and non-overlapping across the switching mode map, each of the plurality of switching modes includes gate trigger voltage timings for commuting at least one of the primary and secondary bridges. The controller is configured to obtain a plurality of measured system parameter values, select from the switching mode map one of the plurality of switching modes that correlates to the set of system parameter values containing the plurality of measured system parameter values, and adjust gate trigger voltage timings of at least one of the primary and secondary bridges, according to the selected switching mode.Type: ApplicationFiled: November 19, 2014Publication date: May 19, 2016Applicant: GENERAL ELECTRIC COMPANYInventors: SIMON HERBERT SCHRAMM, SAID FAROUK SAID EL-BARBARI, STEFAN SCHROEDER, ZHIHUI YUAN
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Publication number: 20160036338Abstract: A single active bridge converter is provided. The single active bridge converter includes a transformer including a primary winding and a secondary winding, a primary side circuit electrically coupled to the primary winding and including an H bridge circuit, and a secondary side circuit electrically coupled to the secondary winding, the secondary side circuit including a switch configured to selectively short the transformer secondary winding.Type: ApplicationFiled: July 30, 2014Publication date: February 4, 2016Inventors: Said Farouk Said El-Barbari, Simon Herbert Schramm
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Publication number: 20150137771Abstract: A power generation system includes a generator mechanically coupled to an engine to generate electrical power and a fault ride through system connected between the generator and a power grid. The fault ride through system includes a mechanical switch connected in parallel with a solid state switch and a controller for controlling the mechanical switch, the solid state switch and ignition of the engine in coordination.Type: ApplicationFiled: November 20, 2013Publication date: May 21, 2015Applicant: GENERAL ELECTRIC COMPANYInventors: Ara Panosyan, Said Farouk Said El-Barbari, Stefan Schroeder
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Publication number: 20150131349Abstract: A system including a multi-level power converter is provided. The system also includes a plurality of DC link capacitors and a balancing circuit coupled to the multi-level power converter. The balancing circuit further includes two sets of interface branches. Each set includes a plurality of interface branches and a plurality of switching elements. The balancing circuit also includes a battery coupled to one or more inductors across the two sets of interface branches and a controller for controlling switching operations of the plurality of switching elements for modifying a voltage of the battery to balance voltages of the plurality of DC link capacitors.Type: ApplicationFiled: November 12, 2013Publication date: May 14, 2015Applicant: General Electric CompanyInventors: Said Farouk Said El-Barbari, Silvio Colombi, Rajendra Naik, Luke Anthony Solomon, Siddharth Pant, Alfred Permuy
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Patent number: 9030852Abstract: A power conversion device according to the aspects of the present technique is presented. The device includes a first converter and a second converter operatively coupled to the first converter. Moreover, the device includes a phase leg operatively coupled between the first converter, the second converter, where the phase leg includes a first unidirectional switch, a second unidirectional switch operatively coupled to the first unidirectional switch, and a first bidirectional switch, where a first end of the first bidirectional switch is operatively coupled to at least one of the first unidirectional switch and the second unidirectional switch.Type: GrantFiled: May 31, 2012Date of Patent: May 12, 2015Assignee: General Electric CompanyInventors: Piniwan Thiwanka Bandara Wijekoon, Said Farouk Said El-Barbari
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Publication number: 20150115902Abstract: A power generation system includes a generator mechanically coupled to an engine to generate electrical power and a fault ride through system connected between the generator and a power grid. The fault ride through system includes a mechanical switch connected in parallel with a solid state switch and a resistor to absorb power from the generator during a grid fault condition. The mechanical switch and the solid state switch are controlled in coordination with the engine.Type: ApplicationFiled: October 29, 2013Publication date: April 30, 2015Applicant: General Electric CompanyInventors: Ara Panosyan, Said Farouk Said El-Barbari, Stefan Schroeder