Lynn J Johnson

US Patent:

6426603, Jul 30, 2002

Filed:

Jun 28, 2000

Appl. No.:

09/604847

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy Automation - Alpharetta GA

International Classification:

H02P 700

US Classification:

318434, 318490, 361 23, 361 88, 324512, 324772

Abstract:

Problems associated with delta motors and motor controllers being subjected to overcurrent conditions as well as with time consuming troubleshooting are eliminated in a motor controller that automatically inhibits operation of the delta motor when it detects permanent single phase wiring errors that occur during the installation process.

US Patent:

6586905, Jul 1, 2003

Filed:

Jun 28, 2000

Appl. No.:

09/604854

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy Automation - Alpharetta GA

International Classification:

H02P 126

US Classification:

318778, 318700, 318727, 318779, 318801, 318811

Abstract:

A motor controller controls a motor operated by an AC line voltage. The controller includes an SCR connectable between an AC line and a motor terminal for controlling application of AC line voltage to the motor. Contacts are connected in parallel with the SCRs for selectively bypassing the SCRs. A sensing circuit senses if the contacts are bypassing the SCRs. A control is connected to the sensing circuit and the SCRs for varying relative duration of on time and off time of the SCRs during each cycle of line voltage to control motor voltage at a reference level. The control adds a time delay to a running operation prior to turning the SCRs off to stop the motor if the contacts are bypassing the SCRs.

US Patent:

61693839, Jan 2, 2001

Filed:

Oct 2, 1998

Appl. No.:

9/165679

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy & Automation, Inc. - Alpharetta GA

International Classification:

H02P 748
H02P 132

US Classification:

318771

Abstract:

Problems associated with maintaining a large inventory of multiple types of motor controllers designed to accommodate a single motor type are eliminated in a motor controller that automatically senses if it connected to a delta motor or a wye motor and configures itself for operation in a compatible mode.

US Patent:

60381140, Mar 14, 2000

Filed:

Oct 2, 1998

Appl. No.:

9/164871

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy & Automation, Inc. - Alpharetta GA

International Classification:

H02H 504

US Classification:

361 23

Abstract:

Problems associated with delta motors and motor controllers being subjected to increased motor torques and overcurrent conditions as well as with time consuming troubleshooting are eliminated in a motor controller that automatically inhibits operation of the delta motor when it detects common wiring errors that occur during the installation process.

US Patent:

6184795, Feb 6, 2001

Filed:

Oct 2, 1998

Appl. No.:

9/164873

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy & Automation, Inc. - Alpharetta GA

International Classification:

G01B 3102

US Classification:

340648

Abstract:

Problems associated with delta motors and motor controllers being subjected to the potentially damaging combination of extremely low motor torque and very high overcurrent conditions resulting from a single dead ended motor winding are eliminated in a motor controller that automatically inhibits operation of the delta motor upon detecting that the two leads of a single motor winding have both been connected to the supply lines for a single phase of a three phase power source.

US Patent:

62013696, Mar 13, 2001

Filed:

Oct 2, 1998

Appl. No.:

9/164944

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy & Automation, Inc. - Alpharetta GA

International Classification:

H02P 528

US Classification:

318811

Abstract:

A motor controller controls a motor operated by an AC line voltage. The controller includes an SCR connectable between an AC line and a motor terminal for controlling application of AC line voltage to the motor. A voltage sensor is operatively associated with the SCR to sense voltage across the SCR. A control circuit is connected to the sensor and the SCR for varying relative duration of on time and off time during each cycle of line voltage to control motor voltage at a reference level. The control circuit determines if a motor stall condition occurs responsive to the sensed SCR voltage and, in response to determining that a motor stall condition occurs, reducing motor voltage by decreasing duration of on time to protect the solid state switch means SCR.

US Patent:

60726741, Jun 6, 2000

Filed:

Oct 1, 1998

Appl. No.:

9/164872

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy & Automation, Inc. - Alpharetta GA

International Classification:

H02H 328

US Classification:

361 23

Abstract:

Problems associated with delta motors being subjected to increased torques and overcurrent conditions resulting from inaccurate swapped wiring configurations in a delta motor system are eliminated in a motor controller that automatically inhibits operation of the delta motor when it detects that the fault contactor connections and the motor controller connections to a delta motor have been swapped or reversed.

US Patent:

63040530, Oct 16, 2001

Filed:

Jun 28, 2000

Appl. No.:

9/604848

Inventors:

Lynn Stewart Johnson - Aurora IL

Assignee:

Siemens Energy & Automation, Inc. - Alpharetta GA

International Classification:

H02P 126
H02P 132

US Classification:

318771

Abstract:

Problems associated with delta motors and motor controllers being subjected to swapped lead conditions as well as with time consuming troubleshooting are eliminated in a motor controller that automatically changes firing circuit timing for proper operation of the delta motor when it detects swapped lead condition that occurs during the installation process.

Author:

Lynn Eric Johnson

ISBN #:

0877473161

Author:

Lynn Staley Johnson

ISBN #:

0299095401

Author:

Lynn S. Johnson

ISBN #:

0271006994

Author:

Lynn Johnson

ISBN #:

0312143524

Author:

Lynn Johnson

ISBN #:

0688158633

Author:

Lynn Johnson

ISBN #:

0811817474

Author:

Lynn Johnson

ISBN #:

0822935015

Author:

Lynn Johnson

ISBN #:

0792279549