Inventor · disambiguated record
Russel J. Kerkman
Also filed as: KERKMAN RUSSEL · KERKMAN RUSSEL J
82 granted patents·1 pending application·2,431 citations·filing 1986–2018
99Inventor score
Top patents by PatentIndex Score
83 records- 0197US6636012B2Stator and rotor resistance identifier using high frequency injectionROCKWELL AUTOMATION TECH INC·Filed 2001·Granted Oct 21, 2003·101 cites·28 claims
- 0296US7738267B1Systems and methods for common-mode voltage reduction in AC drivesROCKWELL AUTOMATION TECH INC·Filed 2009·Granted Jun 15, 2010·55 cites·20 claims
- 0396US6703809B2Flux position identifier using high frequency injection with the presence of a rich harmonic spectrum in a responding signalROCKWELL AUTOMATION TECH INC·Filed 2002·Granted Mar 9, 2004·76 cites·22 claims
- 0495US8570003B2Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethroughLU HAIHUI·Filed 2011·Granted Oct 29, 2013·18 cites·20 claims
- 0595US8188694B2Parallel power inverter motor drive systemTALLAM RANGARAJAN M·Filed 2010·Granted May 29, 2012·22 cites·20 claims
- 0695US8107267B2Systems and methods for common-mode voltage reduction in fully regenerative AC drivesTALLAM RANGARAJAN·Filed 2009·Granted Jan 31, 2012·59 cites·21 claims
- 0795US7400518B2Modulation methods and apparatus for reducing common mode noiseROCKWELL AUTOMATION TECH INC·Filed 2006·Granted Jul 15, 2008·41 cites·28 claims
- 0895US7356441B2Junction temperature prediction method and apparatus for use in a power conversion moduleROCKWELL AUTOMATION TECH INC·Filed 2005·Granted Apr 8, 2008·43 cites·9 claims
- 0995US7034501B1Adjusting gate pulse time intervals for reflected wave mitigationROCKWELL AUTOMATION TECH INC·Filed 2005·Granted Apr 25, 2006·61 cites·15 claims
- 1095US6982533B2Method and apparatus to regulate loadsROCKWELL AUTOMATION TECH INC·Filed 2003·Granted Jan 3, 2006·66 cites·20 claims
- 1195US6023417AGeneralized discontinuous pulse width modulatorALLEN BRADLEY CO·Filed 1998·Granted Feb 8, 2000·167 cites·34 claims
- 1294US7164254B2Modulation methods and apparatus for reducing common mode voltagesROCKWELL AUTOMATION TECH INC·Filed 2005·Granted Jan 16, 2007·65 cites·14 claims
- 1393US9973103B1System for power conversion with reactive power compensationROCKWELL AUTOMATION TECH INC·Filed 2017·Granted May 15, 2018·10 cites·18 claims
- 1493US9294005B2Method and apparatus for detecting AFE filter capacitor degradationTALLAM RANGARAJAN·Filed 2013·Granted Mar 22, 2016·13 cites·17 claims
- 1593US7106025B1Cancellation of dead time effects for reducing common mode voltagesROCKWELL AUTOMATION TECH INC·Filed 2005·Granted Sep 12, 2006·52 cites·11 claims
- 1693US5032771ASlip control based on sensing voltage fed to an induction motorALLEN BRADLEY CO·Filed 1990·Granted Jul 16, 1991·76 cites·9 claims
- 1792US8503207B2Discontinuous pulse width drive modulation method and apparatus for reduction of common-mode voltage in power conversion systemsTALLAM RANGARAJAN M·Filed 2010·Granted Aug 6, 2013·14 cites·19 claims
- 1891US7342380B1System and method for adjustable carrier waveform generatorROCKWELL AUTOMATION TECH INC·Filed 2006·Granted Mar 11, 2008·25 cites·22 claims
- 1991US6469916B1Method and apparatus for compensating for device dynamics and voltage drop in inverter based control systemsROCKWELL AUTOMATION TECH INC·Filed 2001·Granted Oct 22, 2002·73 cites·28 claims
- 2090US10250161B1Adaptive harmonic elimination compensation for voltage distortion elementsROCKWELL AUTOMATION TECH INC·Filed 2018·Granted Apr 2, 2019·6 cites·19 claims
- 2190US8319466B2Modular line-to-ground fault identificationVALDEZ CARLOS RODRIGUEZ·Filed 2011·Granted Nov 27, 2012·14 cites·23 claims
- 2290US6014007AMethod and apparatus for starting an AC drive into a rotating motorALLEN BRADLEY CO·Filed 1998·Granted Jan 11, 2000·67 cites·22 claims
- 2389US8432052B2Wind power converter system with grid side reactive power controlLU HAIHUI·Filed 2010·Granted Apr 30, 2013·19 cites·10 claims
- 2489US5140248AOpen loop motor control with both voltage and current regulationALLEN BRADLEY CO·Filed 1990·Granted Aug 18, 1992·66 cites·9 claims
- 2588US9041234B2Double fed induction generator (DFIG) converter and method for improved grid fault ridethroughLU HAIHUI·Filed 2012·Granted May 26, 2015·15 cites·12 claims
- 2688US5965995ATransient inductance tuner for motor controlALLEN BRADLEY CO·Filed 1997·Granted Oct 12, 1999·61 cites·24 claims
- 2788US5689169ATransient inductance identifier for motor controlALLEN BRADLEY CO·Filed 1995·Granted Nov 18, 1997·74 cites·18 claims
- 2887US8704571B2Phase-locked-loop with quadrature tracking filter for synchronizing an electric gridKERKMAN RUSSEL J·Filed 2012·Granted Apr 22, 2014·9 cites·20 claims
- 2987US8575915B2Power control system and methodKERKMAN RUSSEL J·Filed 2010·Granted Nov 5, 2013·7 cites·20 claims
- 3087US8352203B2Digital implementation of a tracking filterROCKWELL AUTOMATION TECH INC·Filed 2009·Granted Jan 8, 2013·13 cites·10 claims
- 3187US6541933B1Angle control of modulating wave to reduce reflected wave overvoltage transientsROCKWELL AUTOMATION TECH INC·Filed 2001·Granted Apr 1, 2003·59 cites·22 claims
- 3287US6477067B1Method and apparatus for compensating for device dynamics in inverter based control systemsROCKWELL AUTOMATION TECH INC·Filed 2001·Granted Nov 5, 2002·57 cites·24 claims
- 3386US9651592B2Impedance detector apparatus and methodKERKMAN RUSSEL J·Filed 2013·Granted May 16, 2017·7 cites·18 claims
- 3485US9590547B2Double fed induction generator (DFIG) converter and method for improved grid fault ridethroughROCKWELL AUTOMATION TECH INC·Filed 2015·Granted Mar 7, 2017·6 cites·18 claims
- 3585US9584043B2Inverter phase current reconstruction apparatus and methodsROCKWELL AUTOMATION TECH INC·Filed 2015·Granted Feb 28, 2017·5 cites·20 claims
- 3685US8188693B2DC bus boost method and system for regenerative brakeWEI LIXIANG·Filed 2009·Granted May 29, 2012·17 cites·20 claims
- 3785US6819077B1Method and apparatus for reducing sampling related errors in a modulating waveform generator used with a PWM controllerROCKWELL AUTOMATION TECH INC·Filed 2003·Granted Nov 16, 2004·48 cites·25 claims
- 3884US9653984B2Filter capacitor degradation detection apparatus and methodPATEL YOGESH POPATLAL·Filed 2012·Granted May 16, 2017·6 cites·15 claims
- 3984US7825621B2Junction temperature reduction for three phase inverters modulesROCKWELL AUTOMATION TECH INC·Filed 2007·Granted Nov 2, 2010·14 cites·25 claims
- 4084US6819070B2Method and apparatus for controlling reflected voltage using a motor controllerROCKWELL AUTOMATION TECH INC·Filed 2003·Granted Nov 16, 2004·47 cites·21 claims
- 4184US6617821B2Method and apparatus for compensating for device dynamics by adjusting inverter carrier frequencyROCKWELL AUTOMATION TECH INC·Filed 2001·Granted Sep 9, 2003·33 cites·21 claims
- 4284US5329217ACompensated feedforward voltage for a PWM AC motor driveALLEN BRADLEY CO·Filed 1992·Granted Jul 12, 1994·49 cites·7 claims
- 4382US7894169B2High resistance ground protection employing AC drive characteristicsROCKWELL AUTOMATION TECH INC·Filed 2008·Granted Feb 22, 2011·14 cites·23 claims
- 4481US6720748B1Static commissioning method and apparatus to identify rated flux currentROCKWELL AUTOMATION TECH INC·Filed 2003·Granted Apr 13, 2004·26 cites·21 claims
- 4581US5502360AStator resistance detector for use in electric motor controllersALLEN BRADLEY CO·Filed 1995·Granted Mar 26, 1996·49 cites·14 claims
- 4679US9374021B2PWM output voltage measurement apparatus and methodTALLAM RANGARAJAN·Filed 2013·Granted Jun 21, 2016·4 cites·10 claims
- 4779US5912813AMethod and apparatus for controlling reflected voltage using a motor controllerALLEN BRADLEY CO·Filed 1997·Granted Jun 15, 1999·61 cites·17 claims
- 4878US8710782B2Parallel power inverter motor drive systemTALLAM RANGARAJAN M·Filed 2012·Granted Apr 29, 2014·4 cites·20 claims
- 4978US8471516B2Adjustable speed drive lifetime improvement methodWEI LIXIANG·Filed 2010·Granted Jun 25, 2013·3 cites·22 claims
- 5078US4958117AFrequency control based on sensing voltage fed to an induction motorALLEN BRADLEY CO·Filed 1989·Granted Sep 18, 1990·32 cites·4 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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