Inventor · disambiguated record
James M. Nagashima
Also filed as: NAGASHIMA JAMES · NAGASHIMA JAMES M · NAGASHIMA JAMES MICHIO
59 granted patents·5 pending applications·2,002 citations·filing 1999–2015
99Inventor score
Files withGEN MOTORS CORP30GM GLOBAL TECH OPERATIONS INC19FLEX POWER CONTROL INC3NAGASHIMA JAMES M3GALLEGOS-LOPEZ GABRIEL2
Top patents by PatentIndex Score
64 records- 0198US7210304B2Cooling arrangements for integrated electric motor-invertersGEN MOTORS CORP·Filed 2005·Granted May 1, 2007·91 cites·22 claims
- 0298US7154237B2Unified power control method of double-ended inverter drive systems for hybrid vehiclesGEN MOTORS CORP·Filed 2005·Granted Dec 26, 2006·89 cites·14 claims
- 0397US10355611B2Multi-functional power management systemFLEX POWER CONTROL INC·Filed 2015·Granted Jul 16, 2019·22 cites·14 claims
- 0497US7450378B2Power module having self-contained cooling systemGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Nov 11, 2008·53 cites·19 claims
- 0597US6894454B2Position sensorless control algorithm for AC machineGEN MOTORS CORP·Filed 2002·Granted May 17, 2005·77 cites·19 claims
- 0697US6608396B2Electrical motor power management systemGEN MOTORS CORP·Filed 2001·Granted Aug 19, 2003·203 cites·20 claims
- 0796US7199535B2Doubled-ended inverter drive system topology for a hybrid vehicleGEN MOTORS CORP·Filed 2005·Granted Apr 3, 2007·84 cites·19 claims
- 0896US7002318B1Position sensor fault tolerant control for automotive propulsion systemGEN MOTORS CORP·Filed 2004·Granted Feb 21, 2006·105 cites·18 claims
- 0995US7847437B2Efficient operating point for double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Dec 7, 2010·43 cites·20 claims
- 1095US6404628B1Integrated power electronics cooling housingGEN MOTORS CORP·Filed 2000·Granted Jun 11, 2002·87 cites·17 claims
- 1194US10926649B2Method to reduce losses in a high voltage DC link converterFLEX POWER CONTROL INC·Filed 2015·Granted Feb 23, 2021·12 cites·22 claims
- 1294US6924617B2Position sensorless control algorithm for AC machineGEN MOTORS CORP·Filed 2003·Granted Aug 2, 2005·59 cites·18 claims
- 1394US6313991B1Power electronics system with fully-integrated coolingGEN MOTORS CORP·Filed 2000·Granted Nov 6, 2001·75 cites·13 claims
- 1492US9960698B2Reliable AC-DC power converter with high voltage DC linkFLEX POWER CONTROL INC·Filed 2015·Granted May 1, 2018·9 cites·19 claims
- 1592US7525269B2Method and apparatus for sensorless position control of a permanent magnet synchronous motor (PMSM) drive systemGM GLOBAL TECH OPERATIONS INC·Filed 2005·Granted Apr 28, 2009·27 cites·17 claims
- 1691US7990098B2Series-coupled two-motor drive using double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Aug 2, 2011·32 cites·8 claims
- 1791US7332837B2Cooling and handling of reaction torque for an axial flux motorGEN MOTORS CORP·Filed 2004·Granted Feb 19, 2008·54 cites·12 claims
- 1890US8054032B2Discontinuous pulse width modulation for double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Nov 8, 2011·30 cites·20 claims
- 1990US8002056B2Double-ended inverter system with isolated neutral topologyGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Aug 23, 2011·25 cites·18 claims
- 2089US7474029B2Rotor magnet placement in interior permanent magnet machinesGEN MOTORS CORP·Filed 2004·Granted Jan 6, 2009·37 cites·9 claims
- 2189US6768932B2Wheel motor systemGEN MOTORS CORP·Filed 2002·Granted Jul 27, 2004·79 cites·18 claims
- 2288US7956563B2System for using a multi-phase motor with a double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Jun 7, 2011·27 cites·18 claims
- 2388US7262536B2Gearless wheel motor drive systemGEN MOTORS CORP·Filed 2004·Granted Aug 28, 2007·62 cites·31 claims
- 2486US6262896B1Auxiliary power conversion for an electric vehicle using high frequency injection into a PWM inverterGEN MOTORS CORP·Filed 2000·Granted Jul 17, 2001·53 cites·2 claims
- 2585US6219245B1Electrically isolated power switching device mounting assembly for EMI reductionGEN MOTORS CORP·Filed 2000·Granted Apr 17, 2001·43 cites·12 claims
- 2683US8026691B2Double ended inverter system with a cross-linked ultracapacitor networkGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Sep 27, 2011·21 cites·13 claims
- 2783US6892796B1Apparatus and method for mounting a power moduleGEN MOTORS CORP·Filed 2000·Granted May 17, 2005·35 cites·9 claims
- 2882US8212505B2Method and system for creating a vibration in an automobileNAGASHIMA JAMES M·Filed 2008·Granted Jul 3, 2012·15 cites·18 claims
- 2981US7843162B2Current regulator and current control method and system for AC motorsGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Nov 30, 2010·13 cites·20 claims
- 3081US7579792B2Hybrid motor boost system and methodsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Aug 25, 2009·19 cites·20 claims
- 3181US6381110B1Method and apparatus for detecting isolation faults in motor/inverter systemsGEN MOTORS CORP·Filed 2000·Granted Apr 30, 2002·58 cites·9 claims
- 3280US7956569B2Double ended inverter system with an impedance source inverter subsystemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Jun 7, 2011·13 cites·20 claims
- 3380US6989641B2Methods and apparatus for fault-tolerant control of electric machinesGEN MOTORS CORP·Filed 2003·Granted Jan 24, 2006·28 cites·10 claims
- 3479US7723874B2Cooling systems and methods for integration electric motor-invertersGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted May 25, 2010·9 cites·20 claims
- 3577US6617820B2Auxiliary power conversion by phase-controlled rectificationGEN MOTORS CORP·Filed 2001·Granted Sep 9, 2003·33 cites·21 claims
- 3676US8400775B2Capacitor with direct DC connection to substrateWARD TERENCE G·Filed 2007·Granted Mar 19, 2013·13 cites·11 claims
- 3776US8102142B2Double ended inverter system for a vehicle having two energy sources that exhibit different operating characteristicsSMITH GREGORY S·Filed 2008·Granted Jan 24, 2012·13 cites·17 claims
- 3876US8058830B2Charging energy sources with a rectifier using double-ended inverter systemJOHN GEORGE·Filed 2008·Granted Nov 15, 2011·16 cites·6 claims
- 3975US6870348B2Rotor resistance adaptation for indirect field oriented control of induction machineGEN MOTORS CORP·Filed 2003·Granted Mar 22, 2005·24 cites·17 claims
- 4073US7282886B1Method and system for controlling permanent magnet motor drive systemsGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Oct 16, 2007·14 cites·20 claims
- 4172US8122985B2Double-ended inverter drive system for a fuel cell vehicle and related operating methodNAGASHIMA JAMES M·Filed 2008·Granted Feb 28, 2012·13 cites·6 claims
- 4272US6831442B2Utilizing zero-sequence switchings for reversible convertersGEN MOTORS CORP·Filed 2002·Granted Dec 14, 2004·26 cites·12 claims
- 4370US7088077B2Position-sensorless control of interior permanent magnet machinesGEN MOTORS CORP·Filed 2004·Granted Aug 8, 2006·16 cites·18 claims
- 4470US6356182B1Planar EMI inductorGEN MOTORS CORP·Filed 1999·Granted Mar 12, 2002·29 cites·20 claims
- 4569US6504329B2Apparatus and method for controlling permanent magnet electric machinesGEN MOTORS CORP·Filed 2001·Granted Jan 7, 2003·22 cites·13 claims
- 4668US7061134B2Method and system for improved thermal management of a voltage source inverter operating at low output frequency utilizing a zero vector modulation techniqueGEN MOTORS CORP·Filed 2003·Granted Jun 13, 2006·20 cites·7 claims
- 4764US7973433B2Power electronics devices with integrated gate drive circuitryNELSON DAVID F·Filed 2008·Granted Jul 5, 2011·3 cites·18 claims
- 4861US7057371B2Inverter for electric and hybrid powered vehicles and associated system and methodGEN MOTORS CORP·Filed 2004·Granted Jun 6, 2006·15 cites·18 claims
- 4960US8139371B2Power electronics devices with integrated control circuitryNELSON DAVID F·Filed 2008·Granted Mar 20, 2012·2 cites·9 claims
- 5060US8115430B2Methods, systems and apparatus for controlling operation of two alternating current (AC) machinesGALLEGOS-LOPEZ GABRIEL·Filed 2009·Granted Feb 14, 2012·4 cites·20 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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