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James M Nagashima

from Cerritos, CA
Age ~77
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Also known as:
James Michio Nagashima, James Nagashima Kazuyo Nagashima, Jas M Nagashima, James M Magashima, Nagashima Jas
Phone and address:
16608 Moorbrook Ave, Artesia, CA 90703
Related to:
Kenneth L Robers, 36Robbie Nagashima, 75Carolyn C Robertson, 71Wilma F NagashimaKay NagashimaRyan R Fasching, 47Larry A Robertson, 76Jonathan E Nagashima, 38Steven G Fasching, 74Nathan Nagashima, 41Todd S Fasching, 50Cameron W Fasching, 42Steven George Fasching
Connected to:
Hisako Nagashima, 52Megumi Nagashima, 43Tatsuya Nagashima, 51Balajee Nagasubramaniam, 51Kiran Nagasubramanian, 37Akira Nagata, 56Asako Nagata, 56Brian T Nagata, 38Chris M Nagata, 37Christine H Nagata, 73

James Nagashima Phones & Addresses

  • 16608 Moorbrook Ave, Cerritos, CA 90703
  • 1668 Moorbrook Ave, Artesia, CA 90701
  • 81701 Ulrich Dr, La Quinta, CA 92253
  • 81747 Brittlebush Ln, La Quinta, CA 92253
  • Oxnard, CA
  • Chatsworth, CA
  • Los Angeles, CA
  • Arcadia, CA

Work

Company: General motors 2000 to 2009 Position: Manager, advanced development

Skills

Product Development • Automotive • Engineering Management • Vehicles • Manufacturing

Languages

English

Industries

Automotive

Resumes

Resumes

James Nagashima Photo 1

President

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Location:
16608 Moorbrook Ave, Cerritos, CA 90703
Industry:
Automotive
Work:
General Motors 2000 - 2009
Manager, Advanced Development
Nagashima Advanced Technology Consulting 2000 - 2009
President
Skills:
Product Development
Automotive
Engineering Management
Vehicles
Manufacturing
Languages:
English

Publications

Us Patents

Planar Emi Inductor

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US Patent:
6356182, Mar 12, 2002
Filed:
Sep 20, 1999
Appl. No.:
09/484657
Inventors:
James Nagashima - Cerritos CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H01F 500
US Classification:
336200, 336232, 336223
Abstract:
A power bus bar assembly comprising planar electromagnetic interference (EMI) inductors. An exemplary power bus bar assembly or planar inductor comprises upper and lower E-E magnetic cores, and upper and lower flat bus bars that are insulated from each other. The bus bars have a plurality of core cut-outs that allow the cores to pass through them. The core cut-outs form an electrical path through the E-E cores that forms a turn that provides a predetermined amount of inductance. The bus bars may be arranged to form turns in the same direction or opposing directions that provide for a common mode and differential mode inductors, respectively. Different core materials and stacking of multiple cores may be used to improve the frequency response of the inductor.

Electrically Isolated Coolant Manifold With Recessed Apertures For Emi Reduction

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US Patent:
6369319, Apr 9, 2002
Filed:
Apr 19, 2000
Appl. No.:
09/552019
Inventors:
James Nagashima - Cerritos CA
Terence G. Ward - Redondo Beach CA
Scott D. Downer - Torrance CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H02G 300
US Classification:
174 50, 174135
Abstract:
A power electronics chassis ( ) for electric vehicles and other applications that use liquid coolant to cool power electronic devices ( ) contained within the chassis. The chassis ( ) includes an electrically conductive housing ( ) and an electrically non-conductive manifold ( ) that permits coolant flow into and out of the housing. The housing ( ) has at least one wall ( ) that includes an outer surface ( ) and a pair of recessed apertures ( ), each of which provide access to an interior region ( ) of the housing ( ) via a passageway ( ). The manifold ( ) has an inlet ( ) and an outlet ( ), each of which has a connecting tube ( ) that extends through one of the passageways ( ). Each passageway ( ) is defined by an axial wall ( ) of the housing ( ) that extends towards the interior region ( ) from the outer surface ( ) to its respective aperture. The apertures ( ) are each formed by an annular wall ( ) that extends radially inward from its associated axial wall ( ) at the interior end of its passageway. The outer diameter of the connecting tubes ( ) are equal to the diameter of their respective apertures ( ).

Method And Apparatus For Detecting Isolation Faults In Motor/Inverter Systems

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US Patent:
6381110, Apr 30, 2002
Filed:
Mar 6, 2000
Appl. No.:
09/519414
Inventors:
James Nagashima - Cerritos CA
James Souther - Los Angeles CA
Scott D. Downer - Torrance CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H02H 700
US Classification:
361 23, 363 98
Abstract:
A method for detecting an isolation fault in a system comprising a source connected an inverter through a circuit interrupter, the inverter connected to windings of an electric motor for driving the electric motor, is presented. The method comprising operating the inverter (1) to yield a zero net current in the windings of the electric motor other than leakage current resulting from an isolation fault or (2) to apply a voltage to at least one of the windings of the electric motor for a period of time given an ohmic level of an isolation fault to be detected; and measuring a voltage in the system, wherein a voltage level measured during this operation of the inverter is indicative of the existence of an isolation fault. Thereafter, the circuit interrupter is actuated in response to the voltage level indicative of the existence of the isolation fault.

Integrated Power Electronics Cooling Housing

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US Patent:
6404628, Jun 11, 2002
Filed:
Jul 21, 2000
Appl. No.:
09/621379
Inventors:
James M. Nagashima - Cerritos CA
Terence G. Ward - Redondo Beach CA
Scott D. Downer - Torrance CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H05K 720
US Classification:
361690, 16510433, 174 522, 361699
Abstract:
A power electronics cooling housing for use in a power electronics system. The power electronics cooling housing has a body with a coolant cavity formed in one surface and a capacitor bus assembly potting cavity formed in an opposite surface. A bus bar passthrough opening is formed through the body. The bus bar passthrough opening provides an opening from the coolant cavity and the capacitor bus assembly potting cavity. A coolant inlet manifold having a coolant cavity inlet and a coolant outlet manifold having a coolant cavity outlet are formed in the body that are coupled to respective ends of the coolant cavity. An environmental sealing gasket surrounds the coolant cavity.

Apparatus And Method For Controlling Permanent Magnet Electric Machines

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US Patent:
6504329, Jan 7, 2003
Filed:
Apr 9, 2001
Appl. No.:
09/829106
Inventors:
Constantin C. Stancu - Anaheim CA
Silva Hiti - Torrance CA
James M. Nagashima - Cerritos CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H02P 706
US Classification:
318254, 318138, 318439, 318721, 318825
Abstract:
A control scheme for an surface-mounted permanent-magnet synchronous (SMPMS) drive uses a combination of an open-loop magnetizing current reference calculation and a stabilizing feedback term, which speeds-up the torque transient response. The feedback term increases the stability margin during torque transients by increasing the available voltage margin for current control. The magnetizing current reference calculation takes into account the saturation effects in the SMPMS drive, which occur at peak torque points, and compensates for them. By taking into account saturation effects, stable operation at high speed is achieved, thereby increasing the speed range of the SMPMS drive.

Electrical Motor Power Management System

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US Patent:
6608396, Aug 19, 2003
Filed:
Dec 6, 2001
Appl. No.:
10/008921
Inventors:
Scott D. Downer - Torrance CA
James F. Lazar - Moorpark CA
James M. Nagashima - Cerritos CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
B60L 1100
US Classification:
290 40C, 290 45, 307 45
Abstract:
A power control system for an electric traction motor in a vehicle comprising at least one inverter for providing conditioned electrical power to the electric traction motor, a plurality of power stages for providing DC power to the at least one inverter, each stage including a battery and boost/buck DCâDC converter, the power stages wired in parallel, and where the power stages are controlled to maintain an output voltage to the at least one inverter.

Auxiliary Power Conversion By Phase-Controlled Rectification

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US Patent:
6617820, Sep 9, 2003
Filed:
Sep 7, 2001
Appl. No.:
09/947294
Inventors:
Douglas S. Carlson - Hawthorne CA
Constantin C. Stancu - Anaheim CA
James M. Nagashima - Cerritos CA
Silva Hiti - Redondo Beach CA
Khwaja M. Rahman - Torrance CA
Assignee:
General Motors Corporation - Detroit MI
International Classification:
H02P 528
US Classification:
318727, 318700, 318801, 318802, 318811, 363 15, 363 16, 363 17, 363 98, 363132
Abstract:
A method of generating low voltage auxiliary power forms for electric or hybrid vehicle use by tapping power from the traction motor primary winding with a secondary winding and rectifier.

Motor Stator Using Corner Scraps For Additional Electrical Components

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US Patent:
6707222, Mar 16, 2004
Filed:
Jul 3, 2002
Appl. No.:
10/189953
Inventors:
John S. Hsu - Oak Ridge TN
Gui-Jia Su - Knoxville TN
Donald J. Adams - Knoxville TN
James M. Nagashima - Cerritos CA
Constantin Stancu - Anaheim CA
Douglas S. Carlson - Hawthorne CA
Gregory S. Smith - Woodland Hills CA
Assignee:
UT-Battelle, LLC - Oak Ridge TN
International Classification:
H02K 112
US Classification:
310254
Abstract:
A method for making a motor and auxiliary devices with a unified stator body comprises providing a piece of material ( ) having an area larger than a cross section of the stator ( ), removing material from the piece of material ( ) to form a pattern for a cross section of a core ( ) for the stator, and removing material from the piece of material ( ) outside the cross section of the core of the stator ( ) to allow positioning of cores ( ) for supporting windings ( ) of least one additional electromagnetic device, such as a transformer ( ) in a dc-to-dc converter ( ) that provides a low. voltage dc output. An article of manufacture made according to the invention is also disclosed and apparatus made with the method and article of manufacture are also disclosed.
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James M Nagashima from Cerritos, CA, age ~77 Get Report