Issued Patents All Time
Showing 51–75 of 82 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720748 | Static commissioning method and apparatus to identify rated flux current | Brian J. Seibel | 2004-04-13 |
| 6703809 | Flux position identifier using high frequency injection with the presence of a rich harmonic spectrum in a responding signal | Semyon Royak, Mark M. Harbaugh | 2004-03-09 |
| 6636012 | Stator and rotor resistance identifier using high frequency injection | Semyon Royak, Mark M. Harbaugh | 2003-10-21 |
| 6617821 | Method and apparatus for compensating for device dynamics by adjusting inverter carrier frequency | David W. Schlegel, David Leggate | 2003-09-09 |
| 6541933 | Angle control of modulating wave to reduce reflected wave overvoltage transients | David Leggate | 2003-04-01 |
| 6477067 | Method and apparatus for compensating for device dynamics in inverter based control systems | David Leggate | 2002-11-05 |
| 6469916 | Method and apparatus for compensating for device dynamics and voltage drop in inverter based control systems | David Leggate | 2002-10-22 |
| 6359416 | Adaptive predictive synchronous current frame regulator method and apparatus | Aakash Vishalraj K. Rao, David W. Schlegel | 2002-03-19 |
| 6023417 | Generalized discontinuous pulse width modulator | Ahmet M. Hava | 2000-02-08 |
| 6014007 | Method and apparatus for starting an AC drive into a rotating motor | Brian J. Seibel, Timothy M. Rowan | 2000-01-11 |
| 6014497 | Method and apparatus for determining a critical dwell time for use in motor controls | David Leggate, Gary L. Skibinski | 2000-01-11 |
| 5990658 | Apparatus for controlling reflected voltage on motor supply lines | David Leggate, Gary L. Skibinski | 1999-11-23 |
| 5965995 | Transient inductance tuner for motor control | Brian J. Seibel, Timothy M. Rowan | 1999-10-12 |
| 5923144 | Frequency generator for a motor controller | Brian J. Seibel, Timothy M. Rowan, Kevin G. Stachowiak | 1999-07-13 |
| 5917721 | Apparatus for reducing the effects of turn on delay errors in motor control | David Leggate | 1999-06-29 |
| 5912813 | Method and apparatus for controlling reflected voltage using a motor controller | David Leggate, Gary L. Skibinski, Ahmet M. Hava | 1999-06-15 |
| 5717305 | Method and apparatus for starting an electric motor | Brian J. Seibel, Timothy M. Rowan, Kevin G. Stachowiak | 1998-02-10 |
| 5689169 | Transient inductance identifier for motor control | Jerry Thunes, David W. Schlegel, Timothy M. Rowan | 1997-11-18 |
| 5671130 | Method and apparatus for controlling voltage reflections using a motor controller | David Leggate, Gary L. Skibinski | 1997-09-23 |
| 5661353 | Electrostatic shield for AC motor | Jay M. Erdman, David W. Schlegel, Gary L. Skibinski | 1997-08-26 |
| 5625550 | Apparatus used with AC motors for compensating for turn on delay errors | David Leggate | 1997-04-29 |
| 5581169 | Apparatus used with an inverter/converter eliminating unintended voltage pulses | David W. Schlegel, Calvin C. Steinweg | 1996-12-03 |
| 5502360 | Stator resistance detector for use in electric motor controllers | Brian J. Seibel, Doyle F. Busse | 1996-03-26 |
| 5479081 | AC motor controller with voltage margin adjustment | Brian J. Seibel, Timothy M. Rowan | 1995-12-26 |
| 5329217 | Compensated feedforward voltage for a PWM AC motor drive | David Leggate | 1994-07-12 |