1
Joseph G Marcinkiewicz: Active reduction of torque irregularities in rotating machines. Emerson Electric Co, Howrey Simon Arnold & White, December 4, 2001: US06326750 (65 worldwide citation)

A method and apparatus for actively controlling the energization of the stator windings of a rotating electromagnetic machine to actively overcome any tendency of the rotor of the machine to prefer certain angular positions with respect to the stator over other angular positions.


2
Joseph G Marcinkiewicz, J Stephen Thorn, James L Skinner: Sensorless commutation controller for a poly-phase dynamoelectric machine. Emerson Electric Co, Polster Lieder Woodruff & Lucchesi, October 10, 1995: US05457375 (62 worldwide citation)

A BPM or SRM electric motor (M) is supplied bus current. A PWM inverter (I) uses bus current to commutate the motor by Systematically energizing and de-energizing the motor's windings (W) with the current. The resultant bus current waveshape has characteristics that are a function of a commutation a ...


3
Joseph G Marcinkiewicz, Michael I Henderson: Control system and method for a rotating electromagnetic machine. Emerson Electric Company, Howrey Simon Arnold & White, June 29, 2004: US06756757 (56 worldwide citation)

A system and method for controlling a rotating electromagnetic machine. The rotating machine, such as a permanent magnet motor or switched reluctance motor, includes a stator having a plurality of phase windings and a rotor that rotates relative to the stator. A drive is connected to the phase windi ...


4
Vinodkumar Sadasivam, Darko Marcetic, Joseph G Marcinkiewicz: Induction motor control system. Emerson Electric Co, Locke Liddell & Sapp, December 7, 2004: US06828751 (49 worldwide citation)

An induction motor drive system and method estimates a motor power factor based on the AC power output to the motor phase windings and estimates the rotor speed based on the estimated power factor. The estimated rotor speed is compared to a rotor speed command signal to generate a speed error, and t ...


5
Joseph G Marcinkiewicz, Prakash B Shahi, Michael I Henderson: Sensorless control systems and methods for permanent magnet rotating machines. Emerson Electric Co, Harness Dickey & Pierce, March 11, 2008: US07342379 (47 worldwide citation)

Systems and methods for controlling a rotating electromagnetic machine. The rotating machine, such as a permanent magnet motor or hybrid switched reluctance motor, includes a stator having a plurality of phase windings and a rotor that rotates relative to the stator. A drive is connected to the phas ...


6
Joseph G Marcinkiewicz, Donald C Lovett: Force control system. Emerson Electric Co, Howrey Simon Arnold & White, June 11, 2002: US06404154 (45 worldwide citation)

A force control system for an electromagnetic actuator includes an observer that outputs signals representing the instantaneous position and velocity of a movable member, and a position controller that receives the output of the observer and signals representing a desired position and a desired velo ...


7
Joseph G Marcinkiewicz, Prakash B Shahi, Michael I Henderson: Control systems and methods for permanent magnet rotating machines. Emerson Electric Co, Harness Dickey & Pierce, April 24, 2007: US07208895 (41 worldwide citation)

Systems and methods for controlling a rotating electromagnetic machine. The rotating machine, such as a permanent magnet motor or hybrid switched reluctance motor, includes a stator having a plurality of phase windings and a rotor that rotates relative to the stator. A drive is connected to the phas ...


8
Donald C Lovett, Joseph G Marcinkiewicz: Trajectory controller. Switched Reluctance Drives, Mark L Gleason, Arnold White & Durkee, July 18, 2000: US06091215 (40 worldwide citation)

A system for controlling the movement of a movable member with respect to a stationary member, such as is found in a vibration welding apparatus. The system may include a force controller that converts desired force command signals into desired flux command signals and a flux controller that control ...


9
Prakash B Shahi, Arthur E Woodward, Joseph G Marcinkiewicz, Michael I Henderson: Control systems and methods for starting permanent magnet rotating machines. Emerson Electric Co, Harness Dickey & Pierce, May 20, 2008: US07375485 (38 worldwide citation)

Systems and methods for controlling a rotating electromagnetic machine. The rotating machine, such as a permanent magnet motor or hybrid switched reluctance motor, includes a stator having a plurality of phase windings and a rotor that rotates relative to the stator. A drive is connected to the phas ...


10
David M Sugden, Phillip G Langhorst, Joseph G Marcinkiewicz, James C R Smart: Digital power factor correction circuit. Emerson Electric Co, Switched Reluctance Drives, Arnold White & Durkee, September 1, 1998: US05801935 (37 worldwide citation)

A digital power factor correction circuit including a digital comparator that compares the actual DC bus voltage of an electric circuit with a desired DC bus voltage to produce a digital attenuation signal in the form of a pulse width modulated signal that is used to attenuate the voltage from a tim ...