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Nandakumar Thirunarayan

from South Setauket, NY
Age ~60
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Also known as:
Kumar T Nanda, Thirunarayan Nandakumar, Thirunarayan Nandaku, Nandakumar N
Phone and address:
15 Emily Dr, South Setauket, NY 11720
(631) 926-1629
Related to:
Prathima Rangaswamy Kollegal, 57Krishnaprasad Thirunarayan, 57Krishnaprasad Thirunarayan, 63Krishnprasa Thirunarayan, 57
Connected to:
Nandan R Thirunahari, 47Pradeep Thirunagari, 40Sreekanth Thirunagari, 44Srinivas Thirunagar, 56Venkatesan Thirunaukkarasu, 45Ruby Thirus, 41George K Thiruvathukal, 57Giridharan Thiruvengadam, 44Sheshadri R Thiruvenkadam, 48Sujatha Thiruvengadatha, 57

Nandakumar Thirunarayan Phones & Addresses

  • 15 Emily Dr, S Setauket, NY 11720 (631) 926-1629
  • South Setauket, NY
  • 248 Northern Blvd, Saint James, NY 11780 (631) 584-9473
  • Hauppauge, NY
  • Dayton, OH

Work

Company: Aeroflex Position: Senior electrical engineer

Education

Degree: High school graduate or higher

Skills

Electrical Engineering • Engineering • Electronics • Automation • Embedded Systems • Product Development • Systems Engineering • Embedded Software • Pcb Design • Analog • Test Equipment • Hardware Architecture • Power Electronics • System Design

Industries

Electrical/Electronic Manufacturing

Resumes

Resumes

Nandakumar Thirunarayan Photo 1

Senior Electrical Engineer

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Location:
Centereach, NY
Industry:
Electrical/Electronic Manufacturing
Work:
Aeroflex
Senior Electrical Engineer
Skills:
Electrical Engineering
Engineering
Electronics
Automation
Embedded Systems
Product Development
Systems Engineering
Embedded Software
Pcb Design
Analog
Test Equipment
Hardware Architecture
Power Electronics
System Design

Publications

Us Patents

Apparatus, Method Of Manufacturing And Method Of Using A Linear Actuator

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US Patent:
7040481, May 9, 2006
Filed:
Jan 8, 2002
Appl. No.:
10/041420
Inventors:
Nandakumar Thirunarayan - Saint James NY, US
Assignee:
Anorad Corporation - Shirley NY
International Classification:
H02K 41/00
US Classification:
198619, 310 12, 104290
Abstract:
A linear actuator, method of manufacturing and method of using the linear actuator are provided. The invention includes a linear actuator having a plurality of annular magnets surrounded by a bobbin assembly having a coil system. The plurality of annular magnets can be arranged with alternating polarity. The bobbin assembly can be movable along a longitudinal axis extending through the plurality of annular magnets and can further comprise a coil system having coils arranged to, when energized, interact with at least one of the plurality of annular magnets to move the bobbin in a linear mode. Thus, by selectively energizing one or more of the coils, a motive force can be generated on the bobbin assembly by interacting with fields generated by the plurality of annular magnets.

High Performance Linear Motor And Magnet Assembly Therefor

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US Patent:
7145271, Dec 5, 2006
Filed:
Jun 13, 2005
Appl. No.:
11/151152
Inventors:
Nandakumar Thirunarayan - Saint James NY, US
James F. Smith - Smithtown NY, US
Assignee:
Anorad Corporation - Shirley NY
International Classification:
H02K 41/00
US Classification:
310 12, 310 15, 310 13, 310 14, 310 23, 310 27
Abstract:
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.

Apparatus, Method Of Manufacturing And Method Of Using A Linear Actuator

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US Patent:
7287638, Oct 30, 2007
Filed:
Mar 20, 2006
Appl. No.:
11/384688
Inventors:
Nandakumar Thirunarayan - Saint James NY, US
Assignee:
Anorad Corporation - Shirley NY
International Classification:
H02K 41/00
US Classification:
198619, 310 12, 104290, 104294
Abstract:
A linear actuator, method manufacturing and method of using the linear actuator are provided. The invention includes a linear actuator having a plurality of annular magnets surrounded by a bobbin assembly having a coil system. The plurality of annular magnets can be arranged with alternating polarity. The bobbin assembly can be movable along a longitudinal axis extending through the plurality of annular magnets and can further comprise a coil system having coils arranged to, when energized, interact with at least one of the plurality of annular magnets to move the bobbin in a linear mode. Thus, by selectively energizing one or more of the coils, a motive force can be generated on the bobbin assembly by interacting with fields generated by the plurality of annular magnets.

High Performance Motor And Magnet Assembly Therefor

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US Patent:
7291953, Nov 6, 2007
Filed:
May 4, 2006
Appl. No.:
11/381648
Inventors:
James F. Smith - Smithtown NY, US
Nandakumar Thirunarayan - Saint James NY, US
Assignee:
Anorad Corporation - Shirley NY
International Classification:
H20K 7/20
US Classification:
310112, 310191, 310 74, 310113, 310117, 310121
Abstract:
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly. Additionally, the back iron can be a magnetically conductive annular ring, such as is employed in a rotary motor. Moreover, the magnets can be arranged in a manner that generates a Halbach array to increase force output in a desired direction while canceling stray magnetic fields in other directions. Similar reduced-mass designs can be employed in conjunction with a back iron of a fixed cross-section and magnets of variable thicknesses, variable lengths, and/or variable widths. In a case where the arrangement is employed in a platen and forcer system, plates on both the platen and forcer may be scalloped to reduce mass.

High Performance Motor And Magnet Assembly Therefor

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US Patent:
7586217, Sep 8, 2009
Filed:
Sep 28, 2007
Appl. No.:
11/864526
Inventors:
James F. Smith - Smithtown NY, US
Nandakumar Thirunarayan - Saint James NY, US
Assignee:
Anorad Corporation - Shirley NY
International Classification:
H02K 41/00
US Classification:
310 12, 31015632, 31015638
Abstract:
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly. Additionally, the back iron can be a magnetically conductive annular ring, such as is employed in a rotary motor. Moreover, the magnets can be arranged in a manner that generates a Halbach array to increase force output in a desired direction while canceling stray magnetic fields in other directions. Similar reduced-mass designs can be employed in conjunction with a back iron of a fixed cross-section and magnets of variable thicknesses, variable lengths, and/or variable widths. In a case where the arrangement is employed in a platen and forcer system, plates on both the platen and forcer may be scalloped to reduce mass.

Flux Mitigation

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US Patent:
8134435, Mar 13, 2012
Filed:
Sep 29, 2008
Appl. No.:
12/240633
Inventors:
John Floresta - Commack NY, US
Nandakumar Thirunarayan - Saint James NY, US
Fred Sommerhalter - Oyster Bay NY, US
Assignee:
Rockwell Automation Technologies, Inc. - Mayfield Heights OH
International Classification:
H01F 7/00
H01F 1/00
H01H 47/00
US Classification:
335219, 335284, 335285, 335296, 335301, 335302, 335306, 361143, 361147, 361148
Abstract:
Aspects relate to mitigation of a magnetic field produced by one or more units to be shipped such that a magnitude of magnetic field measured is maintained at or below a threshold level. A counter-flux is applied through the use of one or more magnets, magnet arrays, or a geometrical arrangement of magnet arrays. The strength of the counter-flux is varied by altering size, shape, number, polarity and/or location of the one or more magnets or magnet arrays. The one or more magnets or magnet arrays can be constructed as standard assemblies and/or customized magnet assemblies. Additionally, magnet tiles or configurations can provide a return path for stray field leakage and mitigation. Additionally or alternatively, the placement and orientation of the magnets or magnet arrays allows the flux of one or more units to be mitigated, thus, allowing more than one unit to be shipped at the same time.

High Performance Linear Motor And Magnet Assembly Therefor

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US Patent:
20040239194, Dec 2, 2004
Filed:
Jul 12, 2004
Appl. No.:
10/889384
Inventors:
Nandakumar Thirunarayan - Saint James NY, US
James Smith - Smithtown NY, US
International Classification:
H02K041/00
US Classification:
310/012000
Abstract:
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.

High Performance Linear Motor And Magnet Assembly Therefor

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US Patent:
20090072633, Mar 19, 2009
Filed:
Nov 20, 2008
Appl. No.:
12/275073
Inventors:
Nandakumar Thirunarayan - Saint James NY, US
James F. Smith - Smithtown NY, US
Assignee:
Rockwell Automation Technologies, Inc. - Mayfield Heights OH
International Classification:
H02K 41/03
US Classification:
310 12
Abstract:
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.
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Nandakumar Thirunarayan from South Setauket, NY, age ~60 Get Report