1
Jacek F Gieras, Zbigniew Piech: Fabricated components of transverse flux electric motors. Otis Elevator Company, Carlson Gaskey & Olds, October 4, 2005: US06952068 (31 worldwide citation)

Transverse flux electric motors are made using a unique process where individual components are premade and then assembled together. A stator portion is made by nesting a coil between two stator core portions. The stator core portions are made from laminations or sintered powder materials. A separat ...


2
Jacek F Gieras, Zbigniew Piech: Method for making an electric motor. Otis Elevator Company, Carlson Gaskey & Olds, October 24, 2006: US07124495 (22 worldwide citation)

Transverse flux electric motors are made using a unique process where individual components are premade and then assembled together. A stator portion is made by nesting a coil between two stator core portions. In a disclosed example, distinct first and second stator core portions are formed. The sta ...


3
Jacek F Gieras: Transverse flux machine. Hamilton Sundstrand Corporation, Kinney & Lange P A, November 9, 2010: US07830057 (16 worldwide citation)

A transverse flux machine (TFM) includes a stator assembly that provides a plurality of U-shaped magnetic circuits placed circumferentially around a rotor assembly. The plurality of U-shaped magnetic circuits being comprised of a first stator segment, a second stator segment, and a plurality of stat ...


4
Gregory I Rozman, Jacek F Gieras: Direct flux regulated permanent magnet brushless motor utilizing sensorless control. Hamilton Sundstrand Corporation, Carlson Gaskey & Olds PC, November 30, 2010: US07843155 (13 worldwide citation)

A permanent magnet rotor for use in a flux regulated permanent magnet brushless machine is constructed such that the inductance along the direct and quadrature axes is markedly different to provide sensorless position feedback for the rotor.


5
Gregory I Rozman, David W Chaudoir, Jacek F Gieras: Architecture for dual source electric power generating system. Hamilton Sundstrand Corporation, Kinney & Lange P A, January 22, 2013: US08358111 (13 worldwide citation)

A dual source electric power generating system (EPGS) provides both a regulated AC output and a regulated DC output. The EPGS includes a rotating portion and a stationary portion. The stationary portion includes a plurality of windings (permanent magnet generator (PMG) armature windings, an exciter ...


6
Jacek F Gieras, Gregory I Rozman: Permanent magnet dynamoelectric machine with variable magnetic flux excitation. Hamilton Sundstrand Corporation, Stephen G Mican, August 17, 2010: US07777384 (12 worldwide citation)

A permanent magnet (PM) dynamoelectric machine with directly controllable field excitation control comprises: a drive shaft; a PM rotor assembly with multiple PMs arranged around an outer axial periphery of the rotor assembly; a stator assembly comprising a ferromagnetic stator yoke, multiple ferrom ...


7
Jacek F Gieras, Jae Hyuk Oh, Mihai Huzmezan, Hashad S Sane: Electromechanical energy harvesting system. Chubb International Holdings, Kinney & Lange P A, October 4, 2011: US08030807 (10 worldwide citation)

An ambient energy harvesting system, and method of use thereof, includes a magnetic flux-generating assembly (28), a coil (30) positioned adjacent to the magnetic flux-generating assembly (28), and a cantilevered arm (24). Vibration of the cantilevered arm (24) enables relative movement between the ...


8
Gregory I Rozman, Jacek F Gieras, Steven J Moss: Systems for wound field synchronous machines with zero speed rotor position detection during start for motoring and improved transient response for generation. Hamilton Sundstrand Corporation, Edwards Wildman Palmer, Scott D Wofsy, Joshua L Jones, January 6, 2015: US08928293 (8 worldwide citation)

An electrical machine includes a stator having a main armature winding, an exciter field winding, and a transformer primary winding. A rotor is operatively connected to rotate relative to the stator, wherein the rotor includes an exciter armature winding operatively connected to the exciter armature ...


9
Gregory I Rozman, Jacek F Gieras, Steven J Moss: Direct current generating, management and distribution system. Hamilton Sundstrand Corporation, Cantor Colburn, April 15, 2014: US08699251 (8 worldwide citation)

A direct current generating, management and distribution system includes a first armature winding, a first active rectifier having a first controller and coupled to the first armature winding, a first direct current bus coupled to the first active rectifier, a second armature winding, a second activ ...


10
Jacek F Gieras, Gregory I Rozman: Permanent magnet electric generator with variable magnet flux excitation. Hamilton Sundstrand Corporation, Stephen G Mican, December 28, 2010: US07859231 (8 worldwide citation)

A permanent magnet (PM) electric generator with directly controllable field excitation control comprises: a drive shaft; a PM rotor assembly with multiple PMs arranged around an outer axial periphery of the rotor assembly; a stator assembly comprising a ferromagnetic stator yoke, multiple ferromagne ...