Inventor · disambiguated record
Brian A. Welchko
Also filed as: WELCHKO BRIAN · WELCHKO BRIAN A
112 granted patents·12 pending applications·1,355 citations·filing 2003–2024
99Inventor score
Files withGM GLOBAL TECH OPERATIONS INC49GM GLOBAL TECH OPERATIONS LLC43WELCHKO BRIAN A11GEN MOTORS CORP5NAGASHIMA JAMES M2
Top patents by PatentIndex Score
124 records- 0198US8054048B2Power grid load management for plug-in vehiclesGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Nov 8, 2011·170 cites·12 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
- 0396US7199535B2Doubled-ended inverter drive system topology for a hybrid vehicleGEN MOTORS CORP·Filed 2005·Granted Apr 3, 2007·84 cites·19 claims
- 0495US7847437B2Efficient operating point for double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Dec 7, 2010·43 cites·20 claims
- 0595US7279862B1Fault handling of inverter driven PM motor drivesGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Oct 9, 2007·62 cites·15 claims
- 0694US11509253B2Electric drive assembly with dynamic control of pulse width modulation switchingGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Nov 22, 2022·3 cites·20 claims
- 0794US7652858B2Protection for permanent magnet motor control circuitsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Jan 26, 2010·33 cites·19 claims
- 0893US7411801B2Method and apparatus for controlling voltage linearity of voltage source invertersGM GLOBAL TECH OPERATIONS INC·Filed 2005·Granted Aug 12, 2008·37 cites·20 claims
- 0992US8278881B2Power grid load management for plug-in vehiclesWOODY GEORGE R·Filed 2011·Granted Oct 2, 2012·26 cites·8 claims
- 1092US6864646B2Multiple inverter system with low power bus ripples and method thereforGEN MOTORS CORP·Filed 2003·Granted Mar 8, 2005·54 cites·16 claims
- 1191US7990098B2Series-coupled two-motor drive using double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Aug 2, 2011·32 cites·8 claims
- 1291US7391181B2Loss minimized PWM for voltage source inverters taking into account inverter non-linearityGEN MOTORS CORP·Filed 2006·Granted Jun 24, 2008·33 cites·16 claims
- 1391US7307401B2Method and apparatus for PWM control of voltage source inverterGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Dec 11, 2007·35 cites·20 claims
- 1490US8519648B2Temperature compensation for improved field weakening accuracyGALLEGOS-LOPEZ GABRIEL·Filed 2011·Granted Aug 27, 2013·9 cites·19 claims
- 1590US8054032B2Discontinuous pulse width modulation for double-ended inverter systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Nov 8, 2011·30 cites·20 claims
- 1690US8002056B2Double-ended inverter system with isolated neutral topologyGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Aug 23, 2011·25 cites·18 claims
- 1789US12362742B1Variable slew rate gate driver for hybrid switch power moduleGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Granted Jul 15, 2025·1 cites·20 claims
- 1889US7556082B2Interior permanent magnet rotors with multiple properties and methods of making sameGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Jul 7, 2009·16 cites·10 claims
- 1988US8339084B2Systems and methods for monitoring current in an electric motorWELCHKO BRIAN A·Filed 2010·Granted Dec 25, 2012·10 cites·19 claims
- 2088US7956563B2System 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
- 2188US7193378B1Wye switch inverter for electric and hybrid vehiclesGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Mar 20, 2007·19 cites·12 claims
- 2287US8912753B2Remote power usage management for plug-in vehiclesPUDAR NIKOLA J·Filed 2009·Granted Dec 16, 2014·44 cites·19 claims
- 2387US8575879B2Methods, systems and apparatus for controlling a multi-phase inverterWELCHKO BRIAN A·Filed 2011·Granted Nov 5, 2013·9 cites·20 claims
- 2487US8558496B2Systems and methods for monitoring current in an electric motorWELCHKO BRIAN A·Filed 2011·Granted Oct 15, 2013·7 cites·20 claims
- 2587US7800331B2Method and system for operating an electric motor coupled to multiple power suppliesGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Sep 21, 2010·17 cites·20 claims
- 2687US7659688B2Method and system for resolver alignment in electric motor systemGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Feb 9, 2010·18 cites·20 claims
- 2786US7595600B2Method and system for torque control in permanent magnet machinesGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Sep 29, 2009·17 cites·20 claims
- 2883US9853589B2Electric power system for controlling an electric machineGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Dec 26, 2017·5 cites·18 claims
- 2983US8026691B2Double ended inverter system with a cross-linked ultracapacitor networkGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Sep 27, 2011·21 cites·13 claims
- 3082US10541614B1Method and apparatus for controlling a DC/DC power converterGM GLOBAL TECH OPERATIONS LLC·Filed 2019·Granted Jan 21, 2020·3 cites·20 claims
- 3182US8269434B2Electrical system using phase-shifted carrier signals and related operating methodsWELCHKO BRIAN A·Filed 2009·Granted Sep 18, 2012·21 cites·20 claims
- 3281US9774288B1Control of switching frequency in electric machine assemblyGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Sep 26, 2017·2 cites·17 claims
- 3381US8319460B2Method and system for initiating operation of an electric motorSON YO CHAN·Filed 2009·Granted Nov 27, 2012·13 cites·17 claims
- 3481US7579792B2Hybrid motor boost system and methodsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Aug 25, 2009·19 cites·20 claims
- 3580US8556011B2Prediction strategy for thermal management and protection of power electronic hardwareANWAR MOHAMMAD N·Filed 2008·Granted Oct 15, 2013·15 cites·16 claims
- 3680US8115433B2Electrical system for pulse-width modulated control of a power inverter using phase-shifted carrier signals and related operating methodsWELCHKO BRIAN A·Filed 2008·Granted Feb 14, 2012·18 cites·20 claims
- 3780US7956569B2Double ended inverter system with an impedance source inverter subsystemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Jun 7, 2011·13 cites·20 claims
- 3880US7218071B1Method and apparatus for increasing AC motor torque output at low frequencyGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted May 15, 2007·12 cites·18 claims
- 3980US2024396488A1Method and system for controlling an electric machineGM GLOBAL TECH OPERATIONS LLC·Filed 2024·Application pending·0 cites
- 4078US11685261B2Enhanced electric drive vehicle performance with extended motor torque capabilitiesGM GLOBAL TECH OPERATIONS LLC·Filed 2020·Granted Jun 27, 2023·1 cites·20 claims
- 4178US7679310B2Method and system for controlling pulse width modulation in a power inverter in electric drivesGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Mar 16, 2010·16 cites·19 claims
- 4277US7944161B2DC bus discharge in an electric motor systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted May 17, 2011·10 cites·20 claims
- 4377US7723946B2Method and system for pulse position scheduling in electric drivesGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted May 25, 2010·12 cites·18 claims
- 4477US7471526B2Method and apparatus to reduce PWM voltage distortion in electric drivesGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Dec 30, 2008·11 cites·20 claims
- 4576US8102142B2Double 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
- 4676US8058830B2Charging energy sources with a rectifier using double-ended inverter systemJOHN GEORGE·Filed 2008·Granted Nov 15, 2011·16 cites·6 claims
- 4776US7774148B2Torque estimator for IPM motorsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Aug 10, 2010·10 cites·18 claims
- 4875US12249944B2In-situ inverter capacitance analyses and degradation alerts using variable operational modes of electric motorGM GLOBAL TECH OPERATIONS LLC·Filed 2022·Granted Mar 11, 2025·0 cites·20 claims
- 4975US8463483B2Method and system for monitoring vehicle electrical systemsWELCHKO BRIAN A·Filed 2010·Granted Jun 11, 2013·6 cites·17 claims
- 5075US7576500B2Method and system for operating a motor to reduce noise in an electric vehicleGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Aug 18, 2009·10 cites·20 claims
Showing the top 50 of 124 patent records by PatentIndex Score.
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