Patents by Inventor Gian Carlo Montanari
Gian Carlo Montanari 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: 20230251296Abstract: Systems and methods are provided for producing optimized electronic components. Particularly, the systems and methods may involve the use of a “three-legged approach” for determining design parameters for electrical components (and/or insulation of the electrical components) such that the electrical component is not subject to partial discharges (PDs) at a maximum operating voltage of the electrical component. The approach may involve extracting maximum bulk (e.g., orthogonal) and surface (e.g., tangential) electrical stress (e.g., electrical field) information at operating temperatures, comparing the values of these electric fields with electric field values that are likely to cause the inception of one or more PDs in the electrical component (which may be determined through modeling), and linking these results with PD measurements (such as the surface partial discharge inception voltage, SPDIV).Type: ApplicationFiled: January 24, 2023Publication date: August 10, 2023Inventors: Michael Steurer, Gian Carlo Montanari, Christoph Diendorfer, Qichen Yang
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Patent number: 9400305Abstract: An instrument for detecting partial electric discharges includes: an input stage set up to receive a discharge signal representative of one or more partial discharge pulses and a sync signal representative of an alternating voltage applied to the electric apparatus; a data processing stage for receiving the discharge signal and the sync signal, and extracting substantially in real time for each pulse detected the value of an amplitude parameter, correlated with a pulse amplitude, and the value of a phase parameter, representative of the phase of the voltage applied to the electric apparatus concurrently with the pulse, and transferring to output a processed digital signal including the values extracted. The processing stage includes a filtering module set up to disable substantially in real time the transfer to output of the values of the parameters extracted for one or more pulses.Type: GrantFiled: May 28, 2010Date of Patent: July 26, 2016Assignee: TECHIMP HQ S.R.L.Inventors: Fabiano Bettio, Gian Carlo Montanari
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Patent number: 9234926Abstract: An apparatus for measuring the loss factor of an insulator for medium or high voltages is equipped with a tap adapter forming a point for picking up an electrical signal, and comprises a reference capacitor having a first electrode connected to the tap adapter and a second electrode; a first voltage detection module is connected to the first electrode of the reference capacitor for detecting a signal representative of the voltage applied to the reference capacitor; an active electronic device is connected to earth and to the second electrode of the reference capacitor for keeping the potential of the second electrode at a predetermined reference value; a second voltage detection module is connected to an output of the active electronic device in order to detect a signal representative of the electric current that flows through the reference capacitor.Type: GrantFiled: June 22, 2011Date of Patent: January 12, 2016Assignee: TECHIMP HQ S.R.L.Inventors: Stefano Rolli, Gianpaolo De Robertis, Stefano Serra, Gian Carlo Montanari
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Patent number: 9035659Abstract: An apparatus (1) for measuring the loss factor of an insulator (2) for medium or high voltages, equipped with a tap adapter (3) forming a point for picking up an electrical signal (4), comprises a reference capacitor (9) having a first electrode (10), which can be connected to the tap adapter (3), and a second electrode (11); a first voltage detection module (12) operatively connected to the first electrode (10) of the reference capacitor (9) for detecting a signal representative of the voltage applied to the reference capacitor (9); a generator module connected to the first electrode (10) of the reference capacitor (9) in order to inject a direct electric current into the insulator.Type: GrantFiled: June 22, 2011Date of Patent: May 19, 2015Assignee: TECHIMP HQ S.R.L.Inventors: Stefano Rolli, Gianpaolo De Robertis, Stefano Serra, Gian Carlo Montanari
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Patent number: 9037438Abstract: A device (1) for detecting and processing signals relating to partial electrical discharges in an electrical apparatus (2) powered by a square-wave (3) voltage modulated by a modulating wave (4) in such a way as to form an alternating voltage of predetermined frequency, comprises: a sensor (5) connectable to the apparatus (2) for detecting a discharge signal (6) representing the electrical pulses generated by the partial discharges; a processing unit (7) connected to the sensor (5) to receive the discharge signal (6) and derive the detection instants of each of the pulses detected with respect to a predetermined time reference, a synchronization module (8) designed to receive an electrical signal (9) representing the power supply voltage and equipped with a filter (10) configured for extracting from said power supply signal (9) a signal (11) representing the modulating wave (4), the processing unit (7) being configured for associating with the pulses detected the values of a phase parameter (f) representing tType: GrantFiled: October 29, 2010Date of Patent: May 19, 2015Assignee: TECHIMP HQ S.R.L.Inventors: Andrea Cavallini, Davide Fabiani, Gian Carlo Montanari
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Patent number: 8990035Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broadband HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components representative of common mode electrical signals present in the measuring circuit.Type: GrantFiled: March 4, 2011Date of Patent: March 24, 2015Assignee: Techimp HQ S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari, Fabiano Bettio
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Patent number: 8972212Abstract: An instrument (1) for measuring the loss factor of an electrical apparatus (2) having an axially extending elongate geometry, in particular a medium voltage cable, comprises: at least a first and a second sensor (3A, 3B) connectable to the apparatus (2) in a first and a second measuring section (4A, 4B) axially spaced along the apparatus (2) by a predetermined quantity, respectively, and designed to measure respective values of the magnetic field generated outside the apparatus (2) by a load current flowing axially through the apparatus; a processing unit (5) designed to receive the magnetic field values measured by the sensors (3A, 3B) and programmed to derive from them a load loss value as a function of the difference between the measured magnetic field values.Type: GrantFiled: October 27, 2010Date of Patent: March 3, 2015Assignee: Techimp HQ S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari
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Patent number: 8901941Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broadband HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components representative of common mode electrical signals present in the measuring circuit.Type: GrantFiled: March 4, 2011Date of Patent: December 2, 2014Assignee: Techimp Technologies S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari, Fabiano Bettio
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Publication number: 20140347071Abstract: A device (1) for assessing the corrosion of the transformer windings in an oil-insulated transformer comprising a copper conductor (2) immersed in the oil. The change of the resistance of the copper conductor (2) over time is measured, e.g. using a Wheatstone bridge (2, 12a, 12b, 12c), and used to assess the degradation of the copper exposed to the insulation oil. The temperature of the copper conductor can be controlled by an heating element and a temperature sensor.Type: ApplicationFiled: November 14, 2012Publication date: November 27, 2014Inventors: Gian Carlo Montanari, Matteo Fattori, Stefano Serra
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Publication number: 20140245814Abstract: A device for measuring the concentration of a gas dissolved in an electrical insulation oil comprises a measuring member (2), internally defining a measuring chamber (3) and a conduit (4) to access the measuring chamber (3), a membrane (6) permeable to gases, inserted inside the conduit (4) for insulating the measuring chamber (3) against the oil and allowing gas to pass from the oil to the measuring chamber (3), a sensor (20) located in the measuring chamber (3) for measuring the concentration of gas in the measuring chamber (3), and a reinforcing grid (8) positioned in the conduit (4) for preventing deformation of the membrane (6), where the grid (8) is located at a position adjacent to the membrane (6) on the side opposite to the measuring chamber (3), and has at least one through section (9, 10) for allowing the oil to exert pressure directly on the membrane (6).Type: ApplicationFiled: November 13, 2012Publication date: September 4, 2014Applicant: Techimp Technologies S.R.L.Inventors: Gian Carlo Montanari, Stefano Serra, Paolo Francia
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Patent number: 8762081Abstract: A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps of detecting (11) the electric pulses (4) picked up by a first and a second sensor (5, 7), operatively connected to the apparatus (3) and spaced out along it, and generating corresponding electric signals representative of the waveform of the pulses (4), selecting (12) at least one pair of signals, detected in the consecutive sensors (5, 7), and representative of a pair of homologous pulses (4), relating to the same partial discharge and propagating in opposite directions along the apparatus, deriving, for the signals of the selected pair of homologous pulses (4), at least one attenuation parameter, correlated with a quantity that is variable depending on the distance travelled by the pulses (4), calculating (13) the distance betweType: GrantFiled: March 18, 2010Date of Patent: June 24, 2014Assignee: Techimp Technologies S.R.L.Inventors: Stefano Serra, Andrea Cavallini, Gian Carlo Montanari, Gaetano Pasini
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Patent number: 8527221Abstract: A method for monitoring an activity of partial electrical discharges in an electric apparatus powered with direct voltage comprises the following steps, repeated in succession at predetermined time intervals: measuring (1) analogue electrical signals and generating corresponding digital signals representative of the wave form of partial discharge impulses; deriving (2) for each of said digital signals, at least one shape parameter and at least one amplitude parameter; separating (3) the set of the measured data into homogeneous sub-sets with respect to the shape parameter; correlating (4) the sub-sets of signals having similar values of the shape parameter and measured in successive steps; selecting (5) the correlated sub-sets for which the amplitude parameter has a predetermined profile over time and attributing the signals of said subsets to partial discharge activities.Type: GrantFiled: January 29, 2008Date of Patent: September 3, 2013Assignee: Techimp Technologies S.r.l.Inventors: Gian Carlo Montanari, Andrea Cavallini, Gaetano Pasini
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Patent number: 8467982Abstract: A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps: (11) of detecting the pulses (4) picked up by a first and a second sensor (5, 7), connected to the apparatus (3) and spaced out along the same; (15) of deriving shape, phase and amplitude parameters for each of the signals detected; (17) of separating the sets of signals detected in each sensor into respective subsets which are uniform in terms of pulse waveform; (18) of identifying the subsets of signals relating to partial discharges and classifying them; (19) of correlating the subsets relating to different sensors and similarly classified, in order to derive a pair of subsets of signals relating to the same discharge site (2); (12) of selecting, for the pair of correlated subsets, at least one pair of homologous pulses (4) detType: GrantFiled: March 24, 2010Date of Patent: June 18, 2013Assignee: Techimp Technologies S.R.L.Inventors: Stefano Serra, Andrea Cavallini, Gian Carlo Montanari, Gaetano Pasini
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Patent number: 8447540Abstract: A method for detecting, identifying and locating partial discharges occurring in a discharge site along an electric apparatus comprises the following steps: detecting (1) electrical signals in a detection station; attributing (2) to each detected signal a value of a phase parameter; deriving (3) for each signal at least one shape parameter and one amplitude parameter; separating (4) the set of signals detected into sub sets that are homogeneous relative to the shape parameter; identifying (5) sub-sets related to partial discharges and cataloguing them; repeating the above steps in a plurality of detection stations positioned along the apparatus; correlating (7) the sub-sets of signals detected in different detection stations and catalogued similarly; selecting (8) as a function of the amplitude and shape parameters of a sub-set among the correlated ones and locating (9) the partial discharges related to said sub-sets at the detection station of the selected sub-set.Type: GrantFiled: January 31, 2008Date of Patent: May 21, 2013Assignee: Techimp Technologies S.R.L.Inventors: Gian Carlo Montanari, Andrea Cavallini, Gaetano Pasini
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Publication number: 20130107410Abstract: An apparatus (1) for measuring the loss factor of an insulator (2) for medium or high voltages, equipped with a tap adapter (3) forming a point for picking up an electrical signal (4), comprises: a reference capacitor (9) having a first electrode (10), which can be connected to the tap adapter, and a second electrode (11); a first voltage detection module (12) operatively connected to the first electrode (10) of the reference capacitor (9) for detecting a signal representative of the voltage applied to the reference capacitor (9); an active electronic device (13) connected to earth and to the second electrode (11) of the reference capacitor (9) and configured to keep the potential of the second electrode (11) at a predetermined reference value; a second voltage detection module (14) operatively connected to an output of the active electronic device (13) in order to detect a signal representative of the electric current that flows through the reference capacitor (9).Type: ApplicationFiled: June 22, 2011Publication date: May 2, 2013Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Rolli, Gianpaolo De Robertis, Stefano Serra, Gian Carlo Montanari
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Publication number: 20130106442Abstract: An apparatus (1) for measuring the loss factor of an insulator (2) for medium or high voltages, equipped with a tap adapter (3) forming a point for picking up an electrical signal (4), comprises a reference capacitor (9) having a first electrode (10), which can be connected to the tap adapter (3), and a second electrode (11); a first voltage detection module (12) operatively connected to the first electrode (10) of the reference capacitor (9) for detecting a signal representative of the voltage applied to the reference capacitor (9); a generator module connected to the first electrode (10) of the reference capacitor (9) in order to inject a direct electric current into the insulator.Type: ApplicationFiled: June 22, 2011Publication date: May 2, 2013Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Rolli, Gianpaolo De Robertis, Stefano Serra, Gian Carlo Montanari
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Publication number: 20120330583Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broadband HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components representative of common mode electrical signals present in the measuring circuit.Type: ApplicationFiled: March 4, 2011Publication date: December 27, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari, Fabiano Bettio
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Publication number: 20120319703Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broad-band HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components represenative of common mode electrical signals present in the measuring circuit.Type: ApplicationFiled: March 4, 2011Publication date: December 20, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari, Fabiano Bettio
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Publication number: 20120290229Abstract: A diagnostic method and apparatus for assessing the insulation condition of electrical equipment (3) insulated with oil (2). The method comprises the following steps: measuring the concentration of at least one gas dissolved in the insulating oil (2) of the electrical equipment (3); deriving at least one concentration parameter correlated with the gas concentration measured in a predetermined acquisition time interval; measuring electrical pulses relating to partial electrical discharges which occur in the electrical equipment (3) and which generate said pulses; deriving at least one discharge parameter correlated with the partial discharges measured substantially concurrently with the predetermined acquisition time interval; deriving a diagnostic indication about the insulation condition of the electrical equipment (3) as a function of the derived values of the concentration and discharge parameters.Type: ApplicationFiled: January 10, 2011Publication date: November 15, 2012Applicant: TECHIMP TECHNOLOGIES, S.R.L.Inventors: Andrea Cavallini, Fabio Ciani, Stefano Serra, Gian Carlo Montanari
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Publication number: 20120215469Abstract: An instrument (1) for measuring the loss factor of an electrical apparatus (2) having an axially extending elongate geometry, in particular a medium voltage cable, comprises: at least a first and a second sensor (3A, 3B) connectable to the apparatus (2) in a first and a second measuring section (4A, 4B) axially spaced along the apparatus (2) by a predetermined quantity, respectively, and designed to measure respective values of the magnetic field generated outside the apparatus (2) by a load current flowing axially through the apparatus; a processing unit (5) designed to receive the magnetic field values measured by the sensors (3A, 3B) and programmed to derive from them a load loss value as a function of the difference between the measured magnetic field values.Type: ApplicationFiled: October 27, 2010Publication date: August 23, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari