1
Albert Andreas Maria Esser, James Patrick Lyons, Lyle Thomas Keister, Steven Wade Sutherland, Melvin La Vern Hughes, Howard Ross Edmunds, Stephen Daniel Nash, Paul Stephen Pate, Patrick Henry McGinn, Conrad Angelo Pecile: Temperature control of electronic components. General Electric Company, Ann M Agosti, Jill M Breedlove, March 28, 2000: US06041850 (35 worldwide citation)

A system for temperature control of an electronic component includes a heat plate supporting the component; a heat plate temperature sensor; a fan capable of providing air for cooling the heat plate; and a fan control for using the heat plate temperature to control the operation of the fan to provid ...


2
Mehdi Abolhassani, Ryan Edwards, Thomas Keister, Alex Skorcz, Enrique Ledezma, Chao Hsu Liao: Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, November 9, 2010: US07830681 (34 worldwide citation)

In one embodiment, the present invention includes a system having multiple modular transformers each including a phase-shifted primary winding coupled to an input power source and phase-shifted secondary windings each coupled to a power cell. The system further includes different phase output lines ...


3
Mehdi Abolhassani, Ryan Edwards, Thomas Keister, Alex Skorcz, Enrique Ledezma, Chao Hsu Liao: Modular multi-pulse transformer rectifier for use in symmetric multi-level power converter. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, October 2, 2012: US08279640 (28 worldwide citation)

In one embodiment, a system may include multiple transformers each to provide an output to one or more power cells, where the power cells provide AC power to a load. Each transformer may have at least one primary winding and multiple secondary windings, where the primary winding of each transformer ...


4
Enrique Ledezma, Thomas Keister, Mehdi Abolhassani, Ryan Edwards, Alex Skorcz, Randall Pipho, Srinivas Satumahanti: Pluggable power cell for an inverter. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, March 6, 2012: US08130501 (27 worldwide citation)

In one embodiment, a power cell chamber for a drive system includes moveable and fixed portions. The moveable portion includes a rectifier stage to rectify an input signal received from a secondary winding of a transformer to provide a rectified signal and an inverter stage having a plurality of swi ...


5
Mehdi Abolhassani, Thomas Keister, Alex Skorcz, Ryan Edwards, Enrique Ledezma: Pre-charging an inverter using an auxiliary winding. TECO—Westinghouse Motor Company, Trop Pruner & Hu P C, July 17, 2012: US08223515 (20 worldwide citation)

A transformer module includes a main primary winding coupled to a first input power source to receive a medium voltage signal, multiple main secondary windings each to couple to a power cell of a drive system, and an auxiliary primary winding coupled to a second input power source to receive a low v ...


6
Mehdi Abolhassani, Thomas Keister, Alex Skorcz, Enrique Ledezma, Ryan Edwards: Partial regeneration in a multi-level power inverter. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, May 10, 2011: US07940537 (18 worldwide citation)

In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regeneration from the load, and a second s ...


7
Mehdi Abolhassani, Ryan Edwards, Thomas Keister, Alex Skorcz, Enrique Ledezma, Chao Hsu Liao: Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, October 25, 2011: US08045346 (16 worldwide citation)

In one embodiment, the present invention includes a system having multiple modular transformers each including a primary winding coupled to an input power source and phase-shifted secondary windings each coupled to a power cell. The system further includes different phase output lines coupled to a l ...


8
Albert Andreas Maria Esser, Lee Burton Silverthorn, Lyle Thomas Keister: Gate voltage modulation for transistor fault conditions. General Electric Company, Ann M Agosti, Marvin Snyder, November 18, 1997: US05689394 (16 worldwide citation)

A power device control system includes a power device having an input gate and first and second output terminals, a controller, and a gate driver for supplying current to the input gate of the power device, comparing a voltage difference between the first and second output terminals, and providing a ...


9
Mehdi Abolhassani, Thomas Keister, Haran Karmaker, Ryan Edwards, Enrique Ledezma, Alex Skorcz: Power converter for use with wind generator. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, January 4, 2011: US07863766 (11 worldwide citation)

In one embodiment, the present invention includes a turbine to generate mechanical energy from kinetic energy, a generator coupled to the turbine to receive the mechanical energy and to output multiple isolated supply powers, and multiple power stages each coupled to the generator. Each of the power ...


10
Enrique Ledezma, Thomas Keister, Mehdi Abolhassani, Ryan Edwards, Alex Skorcz, Randall Pipho, Srinivas Satumahanti: Providing modular power conversion. TECO Westinghouse Motor Company, Trop Pruner & Hu P C, August 28, 2012: US08254076 (9 worldwide citation)

In one embodiment, a medium voltage drive system includes at least one transformer and multiple power cell chambers each coupled to a transformer. The power cell chambers each may include a rectifier, a DC-link, and an inverter. Each power cell chamber can be separated into fixed and moveable portio ...