Patents by Inventor Ashish Bendre
Ashish Bendre 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).
-
Publication number: 20210141012Abstract: A method and apparatus for detection of a failure of a rectifier connected to a passive harmonic filter with a tuned circuit reactor, or of the filter itself, and for generating system currents in the filter, using low cost voltage sensing, modeling of reactor resistance and saturable inductance, and a mathematical integration. The harmonic spectrum of the rectifier current is used to determine an estimate of the rectifier impedance. A template of expected rectifier current is calculated, and compared against a rectifier current calculated on the basis of sensed voltages, to generate a difference signal. The difference signal is compared against a predetermined fault threshold to determine if an error has occurred. The apparatus includes a DSP obtaining the voltages of the source and load, and the tuned circuit reactor voltage, calculating the template, and comparing the actual voltages with the template, to annunciate a fault.Type: ApplicationFiled: January 21, 2021Publication date: May 13, 2021Applicant: TCI, LLCInventors: William Kranz, Ian Wallace, Skyler Sandlin, Ashish Bendre, James Pomes
-
Patent number: 10901026Abstract: A method and apparatus for detection of a failure of a rectifier connected to a passive harmonic filter with a tuned circuit reactor, or of the filter itself, using low cost voltage sensing, modeling of reactor resistance and saturable inductance, and a mathematical integration. The harmonic spectrum of the rectifier current is used to determine an estimate of the rectifier impedance. A template of expected rectifier current is calculated, and compared against a rectifier current calculated on the basis of sensed voltages, to generate a difference signal. The difference signal is compared against a predetermined fault threshold to determine if an error has occurred. The apparatus includes a DSP obtaining the voltages of the source and load, and the tuned circuit reactor voltage, and configured to compare the currents calculated from the actual voltages with the currents in the template, and to thereby determine whether to annunciate a fault.Type: GrantFiled: September 18, 2018Date of Patent: January 26, 2021Assignee: TCI, LLCInventors: William Kranz, Ian Wallace, Skyler Sandlin, Ashish Bendre, James Pomes
-
Publication number: 20200088783Abstract: A method and apparatus for detection of a failure of a rectifier connected to a passive harmonic filter with a tuned circuit reactor, or of the filter itself, using low cost voltage sensing, modeling of reactor resistance and saturable inductance, and a mathematical integration. The harmonic spectrum of the rectifier current is used to determine an estimate of the rectifier impedance. A template of expected rectifier current is calculated, and compared against a rectifier current calculated on the basis of sensed voltages, to generate a difference signal. The difference signal is compared against a predetermined fault threshold to determine if an error has occurred. The apparatus includes a DSP obtaining the voltages of the source and load, and the tuned circuit reactor voltage, and configured to compare the currents calculated from the actual voltages with the currents in the template, and to thereby determine whether to annunciate a fault.Type: ApplicationFiled: September 18, 2018Publication date: March 19, 2020Applicant: TCI, LLCInventors: William Kranz, Ian Wallace, Skyler Sandlin, Ashish Bendre, James Pomes
-
Patent number: 9893522Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: GrantFiled: July 24, 2015Date of Patent: February 13, 2018Assignee: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Patent number: 9812862Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: GrantFiled: July 24, 2015Date of Patent: November 7, 2017Assignee: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Patent number: 9577429Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: GrantFiled: July 24, 2015Date of Patent: February 21, 2017Assignee: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Patent number: 9444253Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: GrantFiled: July 24, 2015Date of Patent: September 13, 2016Assignee: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Patent number: 9257894Abstract: A passive filter for connection between an AC source and a load, in either three-phases or in a single-phase arrangement. The filter includes, for each phase, a trap circuit having an inductor in series with a capacitor, the trap circuit having at least two terminals. A line reactor is connected between the AC source and the load, the line reactor having at least an input terminal, an output terminal and a tap terminal. A switch selectively connects at least one of the trap circuit terminals to a selected one of the line reactor terminals. The switch is capable of selecting which of the trap circuit terminals to connect to which of the line reactor terminals on the basis of a level of voltage distortion being experienced by the AC source, or on the basis of a calculated level of background voltage total harmonic distortion.Type: GrantFiled: September 30, 2014Date of Patent: February 9, 2016Assignee: TCI, LLCInventors: Ian Wallace, Ashish Bendre, Neil Wood, William Kranz
-
Publication number: 20150333516Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: ApplicationFiled: July 24, 2015Publication date: November 19, 2015Applicant: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Publication number: 20150333614Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: ApplicationFiled: July 24, 2015Publication date: November 19, 2015Applicant: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Publication number: 20150333613Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: ApplicationFiled: July 24, 2015Publication date: November 19, 2015Applicant: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Publication number: 20150333615Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: ApplicationFiled: July 24, 2015Publication date: November 19, 2015Applicant: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Patent number: 9099916Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: GrantFiled: January 2, 2014Date of Patent: August 4, 2015Assignee: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold
-
Publication number: 20150091640Abstract: A passive filter for connection between an AC source and a load, in either three-phases or in a single-phase arrangement. The filter includes, for each phase, a trap circuit having an inductor in series with a capacitor, the trap circuit having at least two terminals. A line reactor is connected between the AC source and the load, the line reactor having at least an input terminal, an output terminal and a tap terminal. A switch selectively connects at least one of the trap circuit terminals to a selected one of the line reactor terminals. The switch is capable of selecting which of the trap circuit terminals to connect to which of the line reactor terminals on the basis of a level of voltage distortion being experienced by the AC source, or on the basis of a calculated level of background voltage total harmonic distortion.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Applicant: TCI, LLCInventors: Ian Wallace, Ashish Bendre, Neil Wood, William Kranz
-
Publication number: 20140184315Abstract: A parallel filter arrangement with at least two filters supplying current in line side sensing configuration and a number of sensors for measuring current. The sensors are used to determine the amount of current being supplied by the filters and the amount of current being supplied by a source. The filters adjust their supplied current in order to reduce or eliminate the amount of reactive or harmonic current being supplied by a source.Type: ApplicationFiled: January 2, 2014Publication date: July 3, 2014Applicant: TCI, LLCInventors: Ian Wallace, Ashish Bendre, William Kranz, Jeff Seibold