Patents by Inventor Juan Antonio Sabate
Juan Antonio Sabate 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: 20230387905Abstract: A gate driver circuit includes an isolated gate driver power supply circuit. The isolated gate driver power supply circuit includes a coreless transformer including a primary winding and a secondary winding. The secondary winding is wound about a toroid-shaped, non-magnetic body and the primary winding is a single turn primary winding to reduce capacitance coupling between the primary winding and the secondary winding. The isolated gate driver power supply circuit also includes a resonance converter coupled to the coreless transformer, wherein the resonance converter is configured to enable the isolated gate driver power supply circuit to generate an output voltage independent of load.Type: ApplicationFiled: August 9, 2023Publication date: November 30, 2023Inventors: Juan Antonio Sabate, Eladio Clemente Delgado
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Publication number: 20230327660Abstract: A gate driver circuit includes an isolated gate driver power supply circuit. The isolated gate driver power supply circuit includes a coreless transformer including a primary winding and a secondary winding. The secondary winding is wound about a toroid-shaped, non-magnetic body and the primary winding is a single turn primary winding to reduce capacitance coupling between the primary winding and the secondary winding. The isolated gate driver power supply circuit also includes a resonance converter coupled to the coreless transformer, wherein the resonance converter is configured to enable the isolated gate driver power supply circuit to generate an output voltage independent of load.Type: ApplicationFiled: April 7, 2022Publication date: October 12, 2023Inventors: Juan Antonio Sabate, Eladio Clemente Delgado
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Patent number: 11777487Abstract: A gate driver circuit includes an isolated gate driver power supply circuit. The isolated gate driver power supply circuit includes a coreless transformer including a primary winding and a secondary winding. The secondary winding is wound about a toroid-shaped, non-magnetic body and the primary winding is a single turn primary winding to reduce capacitance coupling between the primary winding and the secondary winding. The isolated gate driver power supply circuit also includes a resonance converter coupled to the coreless transformer, wherein the resonance converter is configured to enable the isolated gate driver power supply circuit to generate an output voltage independent of load.Type: GrantFiled: April 7, 2022Date of Patent: October 3, 2023Assignee: GE Precision Healthcare LLCInventors: Juan Antonio Sabate, Eladio Clemente Delgado
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Patent number: 11125842Abstract: 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.Type: GrantFiled: February 3, 2020Date of Patent: September 21, 2021Assignee: GE PRECISION HEALTHCARE LLCInventors: Ruxi Wang, Xiaohu Liu, Han Peng, Fengfeng Tao, Juan Antonio Sabate
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Patent number: 10955297Abstract: A system for monitoring a junction temperature of a semiconductor device includes a sensing resistor electrically coupled to a source terminal of the semiconductor device in a gate loop of the semiconductor device. The system includes a detection circuit electrically coupled to the gate loop of the semiconductor device and configured to measure a voltage difference across the sensing resistor. The system also includes an electronic control unit electrically coupled to the gate loop and the detection circuit. The electronic control unit is configured to determine a first gate current peak during a switching process of the semiconductor device, wherein the first gate current peak is determined based on the voltage detected by the detection circuit. The electronic control unit is configured to determine the junction temperature based on the first gate current peak.Type: GrantFiled: June 7, 2018Date of Patent: March 23, 2021Assignee: General Electric CompanyInventors: Ruxi Wang, Peter Almern Losee, Juan Antonio Sabate, Krishna Mainali, Tomas Sadilek
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Patent number: 10921403Abstract: Power systems and circuitry for generation of gradient magnetic fields in magnetic resonance imaging (MRI) systems are discussed herein. Embodiments may include the use of multiple gradient amplifiers that share a high-frequency power distribution unit, that may perform power distribution and power supply roles. The high-frequency power distribution unit may allow the use of a single power supply to drive multiple gradient amplifiers via a shared power bus. The gradient amplifiers may make use of modern semiconductor materials that provide high-frequency, high voltage performance, and may be implemented using single semiconductor bridges.Type: GrantFiled: January 22, 2020Date of Patent: February 16, 2021Assignee: GE PRECISION HEALTHCARE LLCInventors: Viswanathan Kanakasabai, Jayanti Ganesh, Juan Antonio Sabate
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Patent number: 10809328Abstract: Embodiments of the present disclosure include an inductor including at least one inductor coil, the at least one inductor coil including a plurality of outer longitudinal portions aligned around an outer periphery of the inductor, and a plurality of inner longitudinal portions aligned around an interior of the inductor. The plurality of outer longitudinal portions and the plurality of inner longitudinal portions collectively form two width-wise sides of the inductor and two length-wise sides of the inductor. The two width-wise sides and the two lengthwise sides define a substantially rectangular prism shape. The two width-wise sides and the two lengthwise sides define a hollow inductor core.Type: GrantFiled: October 18, 2018Date of Patent: October 20, 2020Assignee: General Electric CompanyInventors: Ruxi Wang, Juan Antonio Sabate, Gary Dwayne Mandrusiak, Kevin Patrick Rooney, Karthik Kumar Bodla
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Patent number: 10809326Abstract: A gate driver circuit is provided. The gate driver circuit includes an isolated gate driver power supply circuit. The isolated gate driver power supply circuit includes a coreless transformer and a resonance converter coupled to the coreless transformer. A method of manufacturing an isolated gate driver power supply circuit for a gate driver circuit is also provided.Type: GrantFiled: January 29, 2018Date of Patent: October 20, 2020Assignee: GE PRECISION HEALTHCARE LLCInventors: Ruxi Wang, Krishna Mainali, Juan Antonio Sabate, Xiaohu Liu, Fengfeng Tao
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Patent number: 10788551Abstract: In a magnetic resonance imaging (MRI) system, synchronized control of the operation of a gradient amplifier subsystem, a power supply subsystem, and a power distribution unit subsystem is accomplished by providing a coil command reference signal as an input to respective control blocks of the gradient amplifier subsystem, the power supply subsystem, and the power distribution unit subsystem. The coil command reference signal corresponds to a predetermined gradient coil current for at least one gradient coil of a scanner of the MRI system.Type: GrantFiled: May 30, 2018Date of Patent: September 29, 2020Assignee: General Electric CompanyInventors: Yash Veer Singh, Ruxi Wang, Juan Antonio Sabate, Kanakasabai Viswanathan
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Patent number: 10768249Abstract: A pulsed power system is disclosed, which comprises at least two H-bridges cascaded for providing pulsed current to a load. Each H-bridge comprises at least two legs, and each leg comprises at least two transistor switches connected in series. Each transistor switch comprises a transistor and a diode electrically coupled with the transistor in parallel. The pulsed power system also comprises a controller configured to determine if a slew rate of the load current is lower than a threshold, and to reduce switching loss in response to the slew rate being lower than the threshold.Type: GrantFiled: July 6, 2018Date of Patent: September 8, 2020Assignee: GE PRECISION HEALTHCARE LLCInventors: Ruxi Wang, Juan Antonio Sabate, Fei Xu, Xiaohu Liu
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Patent number: 10746084Abstract: At least one thermal module in fluidic communication with the one or more electronic components. The thermal module including a hydraulic motor operable to rotate a motor output shaft. The module further including a fan coupled to the motor output shaft, at least one heat exchanger in fluidic communication with the fan to provide passage therethrough of an air stream in response to rotational movement of the fan, and a conduit carrying a pressurized liquid stream through the hydraulic motor and each of the at least one heat exchanger. The pressurized liquid stream causing the motor output shaft to rotate and wherein heat in one of the air stream or the pressurized liquid stream is passed through each of the at least one heat exchanger and rejected into the other of the air stream or the pressurized liquid stream. A thermal management system including the at least one thermal module is disclosed.Type: GrantFiled: December 13, 2018Date of Patent: August 18, 2020Assignee: General Electric CompanyInventors: Juan Antonio Sabate, Ruxi Wang, Karthik Kumar Bodla, Krishna Mainali, Yash Veer Singh, Gary Dwayne Mandrusiak, William John Bonneau, Douglas Carl Hofer
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Publication number: 20200191042Abstract: At least one thermal module in fluidic communication with the one or more electronic components. The thermal module including a hydraulic motor operable to rotate a motor output shaft. The module further including a fan coupled to the motor output shaft, at least one heat exchanger in fluidic communication with the fan to provide passage therethrough of an air stream in response to rotational movement of the fan, and a conduit carrying a pressurized liquid stream through the hydraulic motor and each of the at least one heat exchanger. The pressurized liquid stream causing the motor output shaft to rotate and wherein heat in one of the air stream or the pressurized liquid stream is passed through each of the at least one heat exchanger and rejected into the other of the air stream or the pressurized liquid stream. A thermal management system including the at least one thermal module is disclosed.Type: ApplicationFiled: December 13, 2018Publication date: June 18, 2020Inventors: Juan Antonio Sabate, Ruxi Wang, Karthik Kumar Bodla, Krishna Mainali, Yash Veer Singh, Gary Dwayne Mandrusiak, William John Bonneau, Douglas Carl Hofer
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Publication number: 20200174089Abstract: 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.Type: ApplicationFiled: February 3, 2020Publication date: June 4, 2020Inventors: Ruxi Wang, Xiaohu Liu, Han Peng, Fengfeng Tao, Juan Antonio Sabate
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Publication number: 20200158802Abstract: Power systems and circuitry for generation of gradient magnetic fields in magnetic resonance imaging (MRI) systems are discussed herein. Embodiments may include the use of multiple gradient amplifiers that share a high-frequency power distribution unit, that may perform power distribution and power supply roles. The high-frequency power distribution unit may allow the use of a single power supply to drive multiple gradient amplifiers via a shared power bus. The gradient amplifiers may make use of modern semiconductor materials that provide high-frequency, high voltage performance, and may be implemented using single semiconductor bridges.Type: ApplicationFiled: January 22, 2020Publication date: May 21, 2020Inventors: Viswanathan Kanakasabai, Jayanti Ganesh, Juan Antonio Sabate
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Publication number: 20200124688Abstract: Embodiments of the present disclosure include an inductor including at least one inductor coil, the at least one inductor coil including a plurality of outer longitudinal portions aligned around an outer periphery of the inductor, and a plurality of inner longitudinal portions aligned around an interior of the inductor. The plurality of outer longitudinal portions and the plurality of inner longitudinal portions collectively form two width-wise sides of the inductor and two length-wise sides of the inductor. The two width-wise sides and the two lengthwise sides define a substantially rectangular prism shape. The two width-wise sides and the two lengthwise sides define a hollow inductor core.Type: ApplicationFiled: October 18, 2018Publication date: April 23, 2020Applicant: General Electric CompanyInventors: Ruxi Wang, Juan Antonio Sabate, Gary Dwayne Mandrusiak, Kevin Patrick Rooney, Karthik Kumar Bodla
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Patent number: 10585155Abstract: 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.Type: GrantFiled: June 27, 2017Date of Patent: March 10, 2020Assignee: General Electric CompanyInventors: Ruxi Wang, Xiaohu Liu, Han Peng, Fengfeng Tao, Juan Antonio Sabate
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Patent number: 10571538Abstract: A diagnostic device for diagnosing a faulty condition in a gradient amplifier system is presented. The diagnostic device includes a first current sensor configured to be coupled to an input terminal of a filter unit, where the first current sensor is configured to measure a first electric current at the input terminal of the filter unit, and where the first electric current includes a high frequency current component and a low frequency current component. Further, the diagnostic device includes a diagnostic unit coupled to the first current sensor and configured to determine an impedance across the filter unit and a load unit based on the low frequency current component of the measured first electric current and a pre-stored reference voltage, and diagnose the faulty condition of at least one component in at least one of the filter unit and the load unit based on a characteristic of the determined impedance.Type: GrantFiled: June 1, 2018Date of Patent: February 25, 2020Assignee: General Electric CompanyInventors: Ruxi Wang, Juan Antonio Sabate
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Patent number: 10557901Abstract: Power systems and circuitry for generation of gradient magnetic fields in magnetic resonance imaging (MRI) systems are discussed herein. Embodiments may include the use of multiple gradient amplifiers that share a high-frequency power distribution unit, that may perform power distribution and power supply roles. The high-frequency power distribution unit may allow the use of a single power supply to drive multiple gradient amplifiers via a shared power bus. The gradient amplifiers may make use of modern semiconductor materials that provide high-frequency, high voltage performance, and may be implemented using single semiconductor bridges.Type: GrantFiled: February 21, 2018Date of Patent: February 11, 2020Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Jayanti Ganesh, Juan Antonio Sabate
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Patent number: 10539667Abstract: An ultrasound pulse generator circuit includes a first gate driver electrically coupled to a first gallium nitride (GaN) transistor, a second gate driver electrically coupled to a second GaN transistor, a first snubber circuit, a second snubber circuit, and a transformer. The first snubber circuit and the second snubber circuit each include a respective capacitor and resistor and each snubber circuit is configured to clamp a voltage overshoot when present. Further, the transformer generates an output signal when operated and the third transformer is electrically connected downstream of the first GaN transistor, the second GaN transistor, the first snubber circuit, and the second snubber circuit. In addition, the transformer includes multiple windings.Type: GrantFiled: January 6, 2017Date of Patent: January 21, 2020Assignee: General Electric CompanyInventors: Han Peng, Juan Antonio Sabate, Kieran Andrew Wall
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Publication number: 20190376850Abstract: A system for monitoring a junction temperature of a semiconductor device includes a sensing resistor electrically coupled to a source terminal of the semiconductor device in a gate loop of the semiconductor device. The system includes a detection circuit electrically coupled to the gate loop of the semiconductor device and configured to measure a voltage difference across the sensing resistor. The system also includes an electronic control unit electrically coupled to the gate loop and the detection circuit. The electronic control unit is configured to determine a first gate current peak during a switching process of the semiconductor device, wherein the first gate current peak is determined based on the voltage detected by the detection circuit. The electronic control unit is configured to determine the junction temperature based on the first gate current peak.Type: ApplicationFiled: June 7, 2018Publication date: December 12, 2019Inventors: Ruxi Wang, Peter Almern Losee, Juan Antonio Sabate, Krishna Mainali, Tomas Sadilek