41
Gregory I Rozman, Jacek F Gieras, Steven J Moss: Sensor PM electrical machines. Hamilton Sundstrand Corporation, Edwards Wildman Palmer, Scott D Wofsy, Joshua L Jones, October 21, 2014: US08866449 (1 worldwide citation)

A new and useful electrical machine includes a stator including a stator winding and a primary transformer coil. A rotor is operatively connected to rotate relative to the stator, wherein the rotor includes a plurality of embedded permanent magnets. An excitation coil is wound on the rotor and is op ...


42
Jacek F Gieras, Lubomir A Ribarov: Propeller rotor and engine overspeed control. Hamilton Sundstrand Corporation, Kinney & Lange P A, October 4, 2016: US09458844

An electromagnetic device for overspeed control of a propeller driven by an engine shaft comprises a clutch, an eddy-current coupler, and an electromagnetic brake. The clutch is disposed to mechanically decouple the propeller from the engine shaft. The eddy current coupler is disposed to electromagn ...


43
Gregory I Rozman, Steven J Moss, Jacek F Gieras: Electric power generating system with a permanent magnet generator and combination of active and passive rectifiers. Hamilton Sundstrand Corporation, Snell & Wilmer L, November 6, 2018: US10122306

An electric power generating system (EPGS) may comprise a permanent magnet generator (PMG) comprising a rotor comprising a permanent magnet and a stator comprising a first armature winding configured to output a first three-phase voltage, and a second armature winding configured to output a second t ...


44
Gregory I Rozman, Jacek F Gieras, Steven J Moss: High voltage DC power generating system including selectively removable neutral node. Hamilton Sundstrand Corporation, Carlson Gaskey & Olds P C, April 10, 2018: US09941827

A high voltage DC electric power generating system includes a poly-phase permanent magnet generator having at least one control winding and a plurality of power windings. Each of the power windings is a phase of the poly-phase permanent magnet generator. A passive rectifier connects a switch to an i ...


45
Gregory I Rozman, Steven J Moss, Jacek F Gieras: High voltage direct current system with improved generator excitation. HAMILTON SUNDSTRAND CORPORATION, Cantor Colburn, May 23, 2017: US09660563

According to one embodiment of the present invention, a variable frequency generator is provided. The variable frequency generator can comprise a main stator comprising multi-phase armature windings and an exciter field winding; and a rotating portion comprising an exciter multi-phase windings, a ma ...


46
Gregory I Rozman, Jacek F Gieras, Jason B Solomonides: Electric system architecture included in a more-electric engine (MEE) system. HAMILTON SUNDSTRAND CORPORATION, Cantor Colburn, September 26, 2017: US09771164

A more-electric engine (MEE) system configured to operate in a plurality of operating modes includes a first power generating sub-system and a second power generating sub-system. The first power generating sub-system is configured to output electric power to a first power bus. The second power gener ...


47
Gregory I Rozman, Jacek F Gieras, Steven J Moss: Sensing PM electrical machine position. Hamilton Sundstrand Corporation, Locke Lord, Joshua L Jones, Christopher J CilliƩ, December 29, 2015: US09225225

An electrical machine includes a stator having a stator winding and a secondary transformer coil. A rotor is operatively connected to rotate relative to the stator, wherein the rotor includes a plurality of embedded permanent magnets. A primary transformer coil is wound on the rotor and is operative ...


48
Jacek F Gieras, Thomas G Tillman, Hayden M Reeve: Vacuum pressure systems. United Technologies, O Shea Getz P C, June 18, 2013: US08465266

Vacuum pressure systems are provided. In this regard, a representative vacuum pressure system includes: an inlet; and a linear actuator having a permanent magnet, a coil, an inner ferromagnetic core and an outer ferromagnetic core, the outer ferromagnetic core surrounding at least a portion of each ...


49
Lubomir A Ribarov, Jacek F Gieras Jr: Electric motor power drive unit for an aircraft cargo hold floor system. Goodrich Corporation, Snell & Wilmer L, March 6, 2018: US09908706

A power drive unit (PDU) may comprise a first motorized roller comprising an outer rotor having a first magnetic member disposed on a radially inner surface of the outer rotor and may have a liner disposed on a radially outer surface of the outer rotor. The PDU may further comprise an inner rotor ha ...


50
Jacek F Gieras: Doubly stator-fed synchronous generator. HAMILTON SUNDSTRAND CORPORATION, Cantor Colburn, November 6, 2018: US10122307

According to an aspect of the disclosure herein, a generator is provided herein. The generator includes a rotor that further includes a plurality of slots. The generator also includes a three-phase winding configured to produce a first magnetic field and an excitation winding. The excitation winding ...