Inventor
KREFTA RONALD JOHN
US9 patents
Patents
9 patentsUS6741060B2May 25, 2004
Method and system for controlling a permanent magnet machine during fault conditions
DELPHI TECH INC61 citations95
US6577097B2Jun 10, 2003
Method and system for controlling a synchronous machine using a changeable cycle-conduction angle
DELPHI TECH INC58 citations94
US6639371B2Oct 28, 2003
Method and system for controlling start of a permanent magnet machine
DELPHI TECH INC26 citations92
US6232739B1May 15, 2001
High-resolution incremental position sensor with pulse switching strategy
DELPHI TECH INC29 citations92
US6538358B1Mar 25, 2003
Hybrid electrical machine with axially extending magnets
DELPHI TECH INC32 citations91
US6455978B1Sep 24, 2002
Hybrid twin coil electrical machine
DELPHI TECH INC27 citations91
US6437477B1Aug 20, 2002
Hybrid electrical machine with axial flux magnet
DELPHI TECH INC29 citations91
US6864667B2Mar 8, 2005
Stator winding pattern for reduced magnetic noise
DELPHI TECH INC30 citations90
US6342772B1Jan 29, 2002
Drive circuit and method for driving a switched reluctance machine
DELPHI TECH INC8 citations73