Inventor
SCHULZ STEVEN E
US122 patents
⚠️ This page may combine multiple inventors who share the name “SCHULZ STEVEN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GM GLOBAL TECH OPERATIONS INC
25 patentsUS8354817B2Jan 15, 2013
Methods and systems for diagnosing stator windings in an electric motor
GM GLOBAL TECH OPERATIONS INC79 citations98
US8054084B2Nov 8, 2011
Methods and systems for diagnosing stator windings in an electric motor
GM GLOBAL TECH OPERATIONS INC89 citations98
US7768220B2Aug 3, 2010
Harmonic torque ripple reduction at low motor speeds
GM GLOBAL TECH OPERATIONS INC55 citations98
US7839108B2Nov 23, 2010
Electric motor stator winding temperature estimation
GM GLOBAL TECH OPERATIONS INC32 citations93
US7952308B2May 31, 2011
Method and apparatus for torque ripple reduction
GM GLOBAL TECH OPERATIONS INC42 citations92
US7768807B2Aug 3, 2010
Bidirectional no load control with overshoot protection
GM GLOBAL TECH OPERATIONS INC35 citations92
US7642737B2Jan 5, 2010
Anti-windup control for a current regulator of a pulse width modulation inverter
GM GLOBAL TECH OPERATIONS INC21 citations92
US7459874B2Dec 2, 2008
System and method for controlling electric drive systems
GM GLOBAL TECH OPERATIONS INC20 citations92
US7411801B2Aug 12, 2008
Method and apparatus for controlling voltage linearity of voltage source inverters
GM GLOBAL TECH OPERATIONS INC37 citations92
US7307401B2Dec 11, 2007
Method and apparatus for PWM control of voltage source inverter
GM GLOBAL TECH OPERATIONS INC35 citations91
US8358095B2Jan 22, 2013
Method and system for testing electric motors
GM GLOBAL TECH OPERATIONS INC7 citations84
US7880425B2Feb 1, 2011
Electric motor drive systems, motor vehicles, and methods of phase current regulation
GM GLOBAL TECH OPERATIONS INC7 citations84
US7880416B2Feb 1, 2011
Low speed synchronous motor drive operation
GM GLOBAL TECH OPERATIONS INC7 citations84
US7834574B2Nov 16, 2010
Phase current sampling and regulating apparatus and methods, and electric motor drive systems
GM GLOBAL TECH OPERATIONS INC8 citations84
US7774148B2Aug 10, 2010
Torque estimator for IPM motors
GM GLOBAL TECH OPERATIONS INC10 citations84
US7723946B2May 25, 2010
Method and system for pulse position scheduling in electric drives
GM GLOBAL TECH OPERATIONS INC12 citations84
US7679310B2Mar 16, 2010
Method and system for controlling pulse width modulation in a power inverter in electric drives
GM GLOBAL TECH OPERATIONS INC16 citations84
US7659688B2Feb 9, 2010
Method and system for resolver alignment in electric motor system
GM GLOBAL TECH OPERATIONS INC18 citations84
US7652443B2Jan 26, 2010
Method and system for controlling a power inverter in electric drives
GM GLOBAL TECH OPERATIONS INC10 citations84
US7622877B2Nov 24, 2009
Method and system for controlling permanent magnet AC machines
GM GLOBAL TECH OPERATIONS INC16 citations84
US7595600B2Sep 29, 2009
Method and system for torque control in permanent magnet machines
GM GLOBAL TECH OPERATIONS INC17 citations84
US7471526B2Dec 30, 2008
Method and apparatus to reduce PWM voltage distortion in electric drives
GM GLOBAL TECH OPERATIONS INC11 citations84
US7449859B2Nov 11, 2008
Reduction of subharmonic oscillation at high frequency operation of a power inverter
GM GLOBAL TECH OPERATIONS INC13 citations84
US7286375B1Oct 23, 2007
Dead-time compensation method for electric drives
GM GLOBAL TECH OPERATIONS INC11 citations84
US7218071B1May 15, 2007
Method and apparatus for increasing AC motor torque output at low frequency
GM GLOBAL TECH OPERATIONS INC12 citations84
GEN MOTORS CORP
16 patentsUS6894454B2May 17, 2005
Position sensorless control algorithm for AC machine
GEN MOTORS CORP77 citations98
US6166934ADec 26, 2000
High efficiency power system with plural parallel DC/DC converters
GEN MOTORS CORP98 citations98
US6154381ANov 28, 2000
High efficiency power system with plural parallel DC/DC converters
GEN MOTORS CORP117 citations98
US7002318B1Feb 21, 2006
Position sensor fault tolerant control for automotive propulsion system
GEN MOTORS CORP105 citations97
US6972534B1Dec 6, 2005
Delay compensation for stable current regulation when using variable-delay random PWM switching
GEN MOTORS CORP67 citations97
US6924617B2Aug 2, 2005
Position sensorless control algorithm for AC machine
GEN MOTORS CORP59 citations96
US7015667B2Mar 21, 2006
Current regulation for a field weakening motor control system and method
GEN MOTORS CORP25 citations93
US6841969B1Jan 11, 2005
Flux observer in a sensorless controller for permanent magnet motors
GEN MOTORS CORP45 citations93
US6763622B2Jul 20, 2004
Amplitude detection method and apparatus for high frequency impedance tracking sensorless algorithm
GEN MOTORS CORP48 citations93
US6646407B2Nov 11, 2003
Electric motor control having DC-DC converter and method of using same
GEN MOTORS CORP30 citations93
US7391181B2Jun 24, 2008
Loss minimized PWM for voltage source inverters taking into account inverter non-linearity
GEN MOTORS CORP33 citations92
US7211984B2May 1, 2007
Start-up and restart of interior permanent magnet machines
GEN MOTORS CORP40 citations92
US7023168B1Apr 4, 2006
Field weakening motor control system and method
GEN MOTORS CORP52 citations92
US6989641B2Jan 24, 2006
Methods and apparatus for fault-tolerant control of electric machines
GEN MOTORS CORP28 citations92
US6528964B2Mar 4, 2003
Method and system of reducing turn-off loss and noise in a switched reluctance motor drive
GEN MOTORS CORP17 citations84
US6359413B1Mar 19, 2002
Current control system for a switched reluctance motor
GEN MOTORS CORP15 citations84
YEH CHIA-CHOU
3 patentsUS8487575B2Jul 16, 2013
Electric motor stator winding temperature estimation
YEH CHIA-CHOU30 citations92
US8421391B2Apr 16, 2013
Electric motor stator winding temperature estimation systems and methods
YEH CHIA-CHOU24 citations92
US8185342B2May 22, 2012
Estimating rotor angular position and velocity and verifying accuracy of position sensor outputs
YEH CHIA-CHOU7 citations84
MODULUS MEDIA SYSTEMS INC
2 patentsSCHULZ STEVEN E
2 patentsFARADAY & FUTURE INC
1 patentFARADAY&FUTURE INC
1 patentShowing the top 50 of 122 patents by PatentIndex Score.