Patents by Inventor Gregory N. Nielson
Gregory N. Nielson 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: 20170077866Abstract: Embodiments of the present disclosure are related to solar module mounting systems. A system may include an adhesion sheet configured to be secured to a roof of a structure via an adhesive. The system may further include at least one clamp configured for securing at least one solar module to the adhesion sheet. Other embodiments are related to methods of attaching one or more solar modules to a structure.Type: ApplicationFiled: September 14, 2016Publication date: March 16, 2017Inventors: Willard S. MacDonald, Gregory N. Nielson, Roger L. Jungerman
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Patent number: 9559219Abstract: A method including providing a substrate comprising a device layer on which a plurality of device cells are defined; depositing a first dielectric layer on the device layer and metal interconnect such that the deposited interconnect is electrically connected to at least two of the device cells; depositing a second dielectric layer over the interconnect; and exposing at least one contact point on the interconnect through the second dielectric layer. An apparatus including a substrate having defined thereon a device layer including a plurality of device cells; a first dielectric layer disposed directly on the device layer; a plurality of metal interconnects, each of which is electrically connected to at least two of the device cells; and a second dielectric layer disposed over the first dielectric layer and over the interconnects, wherein the second dielectric layer is patterned in a positive or negative planar spring pattern.Type: GrantFiled: June 19, 2015Date of Patent: January 31, 2017Assignee: Sandia CorporationInventors: Murat Okandan, Gregory N. Nielson, Jose Luis Cruz-Campa, Carlos Anthony Sanchez
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Patent number: 9548411Abstract: Various technologies described herein pertain to assembling electronic devices into a microsystem. The electronic devices are disposed in a solution. Light can be applied to the electronic devices in the solution. The electronic devices can generate currents responsive to the light applied to the electronic devices in the solution, and the currents can cause electrochemical reactions that functionalize regions on surfaces of the electronic devices. Additionally or alternatively, the light applied to the electronic devices in the solution can cause the electronic devices to generate electric fields, which can orient the electronic devices and/or induce movement of the electronic devices with respect to a receiving substrate. Further, electrodes on a receiving substrate can be biased to attract and form connections with the electronic devices having the functionalized regions on the surfaces. The microsystem can include the receiving substrate and the electronic devices connected to the receiving substrate.Type: GrantFiled: October 23, 2013Date of Patent: January 17, 2017Assignee: Sandia CorporationInventors: Gregory N. Nielson, Murat Okandan
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Patent number: 9531322Abstract: A PV system composed of sub-arrays, each having a group of PV cells that are electrically connected to each other. A power management circuit for each sub-array has a communications interface and serves to connect or disconnect the sub-array to a programmable power grid. The power grid has bus rows and bus columns. A bus management circuit is positioned at a respective junction of a bus column and a bus row and is programmable through its communication interface to connect or disconnect a power path in the grid. As a result, selected sub-arrays are connected by selected power paths to be in parallel so as to produce a low system voltage, and, alternately in series so as to produce a high system voltage that is greater than the low voltage by at least a factor of ten.Type: GrantFiled: April 19, 2016Date of Patent: December 27, 2016Assignee: Sandia CorporationInventors: Murat Okandan, Gregory N. Nielson
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Patent number: 9508881Abstract: A microsystems-enabled multi-junction photovoltaic (MEM-PV) cell includes a first photovoltaic cell having a first junction, the first photovoltaic cell including a first semiconductor material employed to form the first junction, the first semiconductor material having a first bandgap. The MEM-PV cell also includes a second photovoltaic cell comprising a second junction. The second photovoltaic cell comprises a second semiconductor material employed to form the second junction, the second semiconductor material having a second bandgap that is less than the first bandgap, the second photovoltaic cell further comprising a first contact layer disposed between the first junction of the first photovoltaic cell and the second junction of the second photovoltaic cell, the first contact layer composed of a third semiconductor material having a third bandgap, the third bandgap being greater than or equal to the first bandgap.Type: GrantFiled: October 11, 2012Date of Patent: November 29, 2016Assignee: Sandia CorporationInventors: Anna Tauke-Pedretti, Jeffrey Cederberg, Gregory N. Nielson, Murat Okandan, Jose Luis Cruz-Campa
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Patent number: 9496448Abstract: Photovoltaic cells and photovoltaic modules, as well as methods of making and using such photovoltaic cells and photovoltaic modules, are disclosed. More particularly, embodiments of the photovoltaic cells selectively reflect visible light to provide the photovoltaic cells with a colorized appearance. Photovoltaic modules combining colorized photovoltaic cells may be used to harvest solar energy while providing a customized appearance, e.g., an image or pattern.Type: GrantFiled: October 30, 2013Date of Patent: November 15, 2016Assignee: Sandia CorporationInventors: Jose Luis Cruz-Campa, Gregory N. Nielson, Murat Okandan, Anthony L. Lentine, Paul J. Resnick, Vipin P. Gupta
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Publication number: 20160233827Abstract: A PV system composed of sub-arrays, each having a group of PV cells that are electrically connected to each other. A power management circuit for each sub-array has a communications interface and serves to connect or disconnect the sub-array to a programmable power grid. The power grid has bus rows and bus columns. A bus management circuit is positioned at a respective junction of a bus column and a bus row and is programmable through its communication interface to connect or disconnect a power path in the grid. As a result, selected sub-arrays are connected by selected power paths to be in parallel so as to produce a low system voltage, and, alternately in series so as to produce a high system voltage that is greater than the low voltage by at least a factor of ten.Type: ApplicationFiled: April 19, 2016Publication date: August 11, 2016Inventors: Murat Okandan, Gregory N. Nielson
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Patent number: 9410931Abstract: A low-power miniaturized photoacoustic sensor uses an optical microphone made by semiconductor fabrication techniques, and optionally allows for all-optical communication to and from the sensor. This allows integration of the photoacoustic sensor into systems with special requirements, such as those that would be reactive in an electrical discharge condition. The photoacoustic sensor can also be operated in various other modes with wide application flexibility.Type: GrantFiled: October 17, 2013Date of Patent: August 9, 2016Assignee: Sandia CorporationInventors: Murat Okandan, Alex Robinson, Gregory N. Nielson, Paul J. Resnick
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Patent number: 9391557Abstract: Solar tracking systems, as well as methods of using such solar tracking systems, are disclosed. More particularly, embodiments of the solar tracking systems include lateral supports horizontally positioned between uprights to support photovoltaic modules. The lateral supports may be raised and lowered along the uprights or translated to cause the photovoltaic modules to track the moving sun.Type: GrantFiled: October 25, 2013Date of Patent: July 12, 2016Assignee: Sandia CorporationInventors: Murat Okandan, Gregory N. Nielson
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Publication number: 20160189319Abstract: The present disclosure is related to community virtual net metering of photovoltaic systems. A method may include identifying at least two photovoltaic (PV) system customers in a single geographical area. The method may also include crediting power overproduction of a first PV system customer of the at least two PV system customers to a second, different PV system customer of the at least two PV system customers.Type: ApplicationFiled: December 28, 2015Publication date: June 30, 2016Inventors: Roger L. Jungerman, Randall King, Daniel Rapp, Dwain Kinghorn, Thomas Plagemann, Ron Binz, Gregory N. Nielson
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Patent number: 9356173Abstract: A PV system composed of sub-arrays, each having a group of PV cells that are electrically connected to each other. A power management circuit for each sub-array has a communications interface and serves to connect or disconnect the sub-array to a programmable power grid. The power grid has bus rows and bus columns. A bus management circuit is positioned at a respective junction of a bus column and a bus row and is programmable through its communication interface to connect or disconnect a power path in the grid. As a result, selected sub-arrays are connected by selected power paths to be in parallel so as to produce a low system voltage, and, alternately in series so as to produce a high system voltage that is greater than the low voltage by at least a factor of ten.Type: GrantFiled: August 29, 2013Date of Patent: May 31, 2016Assignee: Sandia CorporationInventors: Murat Okandan, Gregory N. Nielson
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Patent number: 9287430Abstract: A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.Type: GrantFiled: November 1, 2007Date of Patent: March 15, 2016Assignee: Sandia CorporationInventors: Gregory N. Nielson, Vipin P. Gupta, Murat Okandan, Michael R. Watts
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Patent number: 9239431Abstract: A passively athermal photonic system including a photonic circuit having a substrate and an optical cavity defined on the substrate, and passive temperature-responsive provisions for inducing strain in the optical cavity of the photonic circuit to compensate for a thermo-optic effect resulting from a temperature change in the optical cavity of the photonic circuit. Also disclosed is a method of passively compensating for a temperature dependent thermo-optic effect resulting on an optical cavity of a photonic circuit including the step of passively inducing strain in the optical cavity as a function of a temperature change of the optical cavity thereby producing an elasto-optic effect in the optical cavity to compensate for the thermo-optic effect resulting on an optical cavity due to the temperature change.Type: GrantFiled: November 29, 2011Date of Patent: January 19, 2016Assignee: Sandia CorporationInventors: Peter T. Rakich, Gregory N. Nielson, Anthony L. Lentine
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Publication number: 20150340542Abstract: A method, apparatus and system for flexible, ultra-thin, and high efficiency pixelated silicon or other semiconductor photovoltaic solar cell array fabrication is disclosed. A structure and method of creation for a pixelated silicon or other semiconductor photovoltaic solar cell array with interconnects is described using a manufacturing method that is simplified compared to previous versions of pixelated silicon photovoltaic cells that require more microfabrication steps.Type: ApplicationFiled: July 9, 2015Publication date: November 26, 2015Inventors: Gregory N. Nielson, Murat Okandan, Jose Luis Cruz-Campa, Jeffrey S. Nelson, Benjamin John Anderson
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Patent number: 9190546Abstract: A photovoltaic (PV) solar concentration structure having at least two troughs encapsulated in a rectangular parallelepiped optical plastic structure, with the troughs filled with an optical plastic material, the troughs each having a reflective internal surface and approximately parabolic geometry, and the troughs each including photovoltaic cells situated so that light impinging on the optical plastic material will be concentrated onto the photovoltaic cells. Multiple structures can be connected to provide a solar photovoltaic collection system that provides portable, efficient, low-cost electrical power.Type: GrantFiled: September 30, 2010Date of Patent: November 17, 2015Assignee: Sandia CorporationInventors: Benjamin J. Anderson, William C. Sweatt, Murat Okandan, Gregory N. Nielson
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Patent number: 9143053Abstract: Microinverters useable in association with photovoltaic modules are described. A three phase-microinverter receives direct current output generated by a microsystems-enabled photovoltaic cell and converts such direct current output into three-phase alternating current out. The three-phase microinverter is interleaved with other three-phase-microinverters, wherein such microinverters are integrated in a photovoltaic module with the microsystems-enabled photovoltaic cell.Type: GrantFiled: January 15, 2013Date of Patent: September 22, 2015Assignees: Sandia Corporation, The Board of Trustees of the University of IllinoisInventors: Anthony L. Lentine, Gregory N. Nielson, Murat Okandan, Brian Benjamin Johnson, Philip T. Krein
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Patent number: 9141413Abstract: Technologies pertaining to designing microsystems-enabled photovoltaic (MEPV) cells are described herein. A first restriction for a first parameter of an MEPV cell is received. Subsequently, a selection of a second parameter of the MEPV cell is received. Values for a plurality of parameters of the MEPV cell are computed such that the MEPV cell is optimized with respect to the second parameter, wherein the values for the plurality of parameters are computed based at least in part upon the restriction for the first parameter.Type: GrantFiled: October 3, 2012Date of Patent: September 22, 2015Assignee: Sandia CorporationInventors: Jose Luis Cruz-Campa, Gregory N. Nielson, Ralph W. Young, Paul J. Resnick, Murat Okandan, Vipin P. Gupta
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Patent number: 9130092Abstract: A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.Type: GrantFiled: September 15, 2010Date of Patent: September 8, 2015Assignee: Sandia CorporationInventors: Gregory N. Nielson, Vipin P. Gupta, Murat Okandan, Michael R. Watts
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Patent number: 9126392Abstract: A process including forming a photovoltaic solar cell on a substrate, the photovoltaic solar cell comprising an anchor positioned between the photovoltaic solar cell and the substrate to suspend the photovoltaic solar cell from the substrate. A surface of the photovoltaic solar cell opposite the substrate is attached to a receiving substrate. The receiving substrate may be bonded to the photovoltaic solar cell using an adhesive force or a metal connecting member. The photovoltaic solar cell is then detached from the substrate by lifting the receiving substrate having the photovoltaic solar cell attached thereto and severing the anchor connecting the photovoltaic solar cell to the substrate. Depending upon the type of receiving substrate used, the photovoltaic solar cell may be removed from the receiving substrate or remain on the receiving substrate for use in the final product.Type: GrantFiled: September 22, 2011Date of Patent: September 8, 2015Assignee: Sandia CorporationInventors: Gregory N. Nielson, Jose Luis Cruz-Campa, Murat Okandan, Paul J. Resnick, Carlos Anthony Sanchez, Peggy J. Clews, Vipin P. Gupta
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Patent number: 9112100Abstract: A method, apparatus and system for flexible, ultra-thin, and high efficiency pixelated silicon or other semiconductor photovoltaic solar cell array fabrication is disclosed. A structure and method of creation for a pixelated silicon or other semiconductor photovoltaic solar cell array with interconnects is described using a manufacturing method that is simplified compared to previous versions of pixelated silicon photovoltaic cells that require more microfabrication steps.Type: GrantFiled: January 20, 2014Date of Patent: August 18, 2015Assignee: Sandia CorporationInventors: Gregory N. Nielson, Murat Okandan, Jose Luis Cruz-Campa, Jeffrey S. Nelson, Benjamin John Anderson