Patents by Inventor Thomas Enné Hjort
Thomas Enné Hjort 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: 20120086277Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load.Type: ApplicationFiled: May 9, 2011Publication date: April 12, 2012Inventors: Thomas Enné Hjort, Michael Pedersen
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Patent number: 8053927Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line.Type: GrantFiled: December 15, 2010Date of Patent: November 8, 2011Assignee: American Power Conversion CorporationInventors: Thomas Enné Hjort, Michael Pedersen, Henrik Mathiesen, Henning Roar Nielsen, Richard Dyrmose Olsen
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Publication number: 20110227415Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line.Type: ApplicationFiled: December 15, 2010Publication date: September 22, 2011Applicant: AMERICAN POWER CONVERSION CORPORATIONInventors: Thomas Enné Hjort, Michael Pedersen, Henrik Mathiesen, Henning Roar Nielsen, Richard Dyrmose Olsen
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Patent number: 7939968Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load.Type: GrantFiled: August 31, 2004Date of Patent: May 10, 2011Assignee: American Power Conversion CorporationInventors: Thomas Enné Hjort, Michael Pedersen
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Patent number: 7855472Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line.Type: GrantFiled: May 19, 2010Date of Patent: December 21, 2010Assignee: American Power Conversion CorporationInventors: Thomas Enne Hjort, Michael Pedersen, Henrik Mathiesen, Henning Roar Nielsen, Richard Dyrmose Olsen
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Publication number: 20100225170Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line.Type: ApplicationFiled: May 19, 2010Publication date: September 9, 2010Applicant: AMERICAN POWER CONVERSION CORPORATIONInventors: Thomas Enné Hjort, Michael Pedersen, Henrik Mathiesen, Henning Roar Nielsen, Richard Dyrmose Olsen
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Patent number: 7737580Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line.Type: GrantFiled: August 31, 2004Date of Patent: June 15, 2010Assignee: American Power Conversion CorporationInventors: Thomas Enné Hjort, Michael Pedersen, Henrik Mathiesen, Henning Roar Nielsen, Richard Dyrmose Olsen
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Publication number: 20090068517Abstract: Systems and methods for verifying fuel cell system functionality are provided. Various tests and/or exercises may be executed while the fuel cell system is in standby mode to detect potential sources of malfunction. In some examples, one or more tests may be designed to detect leaks or ruptures in various reactant supply lines and/or to test the functionality of various valves associated therewith. A controller may be provided to automatically perform the disclosed tests. In certain examples, the disclosed tests may be conducted without the need to provide each component of a fuel cell system with individual electrical feedback.Type: ApplicationFiled: September 10, 2007Publication date: March 12, 2009Applicant: AMERICAN POWER CONVERSION CORPORATIONInventors: Claus Aabjerg Andersen, Thomas Enne Hjort
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Patent number: 7456518Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a back-up power source coupled to the output to provide backup power at the output, a contactor coupled to the input and having an open state and a closed state, a contactor control circuit having an output coupled to the contactor to provide an output voltage to control an operational state of the contactor, the contactor control circuit being configured to provide an output voltage having a first voltage level to the contactor to control the contactor to switch from the open state to the closed state and to provide a second output voltage having a second voltage level to maintain the contactor in the closed state.Type: GrantFiled: August 31, 2004Date of Patent: November 25, 2008Assignee: American Power Conversion CorporationInventors: Thomas Enné Hjort, Henning Roar Nielsen
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Patent number: 7432615Abstract: Methods and apparatus for delivering uninterruptible power to loads are provided. One aspect on the invention is directed to a system for providing power to a load. The system includes a first input to receive AC power from a first AC power source, a second input to receive AC power from a second AC power source, a third input to receive DC power from a first DC power source, an output that provides output AC power to the load, and converter circuitry, coupled to the first, second and third inputs, adapted to provide the output power derived from at least one of the first AC power source, the second AC power source and the first DC power source.Type: GrantFiled: January 29, 2004Date of Patent: October 7, 2008Assignee: American Power Conversion CorporationInventor: Thomas Enné Hjort
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Patent number: 7274112Abstract: Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load.Type: GrantFiled: August 31, 2004Date of Patent: September 25, 2007Assignee: American Power Conversion CorporationInventors: Thomas Enné Hjort, Henning Roar Nielsen
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Patent number: 7104805Abstract: A connector for providing a high current connection between printed circuit boards. The connector comprises a fastener, an electrically conductive spacer, and a nut. The fastener extends through a through-hole in each of the printed circuit boards. The spacer is disposed about the fastener and between the printed circuit boards. The nut engages a distal end of the fastener and forces the spacer into electrical contact with electrically conductive pads that at least partially surround each of the through-holes on sides of the printed circuit board that face one another. The nut may be press fit or otherwise captivated, or formed integrally in one of the printed circuit boards such that the electrical connection may be effected from a single direction. The spacer may be optimized for electrical conduction while the fastener and/or nut may be optimized for strength, rigidity, low cost, or a combination of such factors.Type: GrantFiled: August 31, 2004Date of Patent: September 12, 2006Assignee: American Power Conversion CorporationInventors: Thomas Enné Hjort, Ditlev Petersen