Inventor
DHYANCHAND P JOHN
US42 patents
⚠️ This page may combine multiple inventors who share the name “DHYANCHAND P JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUNDSTRAND CORP
37 patentsUS5600548AFeb 4, 1997
DC content control for an inverter
SUNDSTRAND CORP117 citations98
US5015941AMay 14, 1991
Power conversion system with bi-directional power converter having prime mover start capability
SUNDSTRAND CORP126 citations98
US5013929AMay 7, 1991
Power conversion system having prime mover start capability
SUNDSTRAND CORP125 citations98
US5281905AJan 25, 1994
Induction machine based hybrid aircraft engine starting/generating power system
SUNDSTRAND CORP85 citations96
US5097241AMar 17, 1992
Cooling apparatus for windings
SUNDSTRAND CORP79 citations96
US5012177AApr 30, 1991
Power conversion system using a switched reluctance motor/generator
SUNDSTRAND CORP82 citations96
US4947100AAug 7, 1990
Power conversion system with stepped waveform inverter having prime mover start capability
SUNDSTRAND CORP98 citations96
US4939441AJul 3, 1990
Excitation system for a brushless generator having separate AC and DC exciter field windings
SUNDSTRAND CORP77 citations96
US4937468AJun 26, 1990
Isolation circuit for pulse waveforms
SUNDSTRAND CORP82 citations96
US4835448AMay 30, 1989
Brushless DC motor torque control
SUNDSTRAND CORP116 citations96
US4695933ASep 22, 1987
Multiphase DC-DC series-resonant converter
SUNDSTRAND CORP87 citations96
US4694383ASep 15, 1987
Controller for a resonant converter
SUNDSTRAND CORP55 citations96
US4670828AJun 2, 1987
Bi-directional switch for neutral point clamped PWM inverter
SUNDSTRAND CORP59 citations95
US5057808AOct 15, 1991
Transformer with voltage balancing tertiary winding
SUNDSTRAND CORP48 citations93
US4968926ANov 6, 1990
Power conversion system with stepped waveform DC to AC converter having prime mover start capability
SUNDSTRAND CORP55 citations93
US5666278ASep 9, 1997
High voltage inverter utilizing low voltage power switches
SUNDSTRAND CORP29 citations92
US5657214AAug 12, 1997
Stepped waveform PWM inverter
SUNDSTRAND CORP23 citations92
US5355296AOct 11, 1994
Switching converter and summing transformer for use therein
SUNDSTRAND CORP43 citations92
US5282125AJan 25, 1994
Power generation system with soft-start circuit
SUNDSTRAND CORP36 citations92
US5040105AAug 13, 1991
Stepped-waveform inverter with eight subinverters
SUNDSTRAND CORP39 citations92
US5031086AJul 9, 1991
Hybrid power system
SUNDSTRAND CORP25 citations92
US4841202AJun 20, 1989
Speed-limited electrically compensated constant speed drive
SUNDSTRAND CORP29 citations92
US4635177AJan 6, 1987
Control for a neutral point clamped PWM inverter
SUNDSTRAND CORP38 citations92
US5559686ASep 24, 1996
Stepped waveform inverter control
SUNDSTRAND CORP32 citations90
US5008797AApr 16, 1991
Power converter utilizing line replaceable units
SUNDSTRAND CORP28 citations90
US5041957AAug 20, 1991
Stepped-waveform inverter with six subinverters
SUNDSTRAND CORP37 citations89
US5317299AMay 31, 1994
Electromagnetic transformer
SUNDSTRAND CORP24 citations87
US5045991ASep 3, 1991
Unity power factor AC/DC converter
SUNDSTRAND CORP40 citations87
US4969081ANov 6, 1990
Inverter switch current sensor with shoot-through current limiting
SUNDSTRAND CORP22 citations82
US4692671ASep 8, 1987
Electrically-compensated constant speed drive
SUNDSTRAND CORP23 citations80
US5301098AApr 5, 1994
Feedforward inverter phase control
SUNDSTRAND CORP18 citations74
US5239454AAug 24, 1993
Stepped-waveform inverter utilizing main and auxiliary subinverters
SUNDSTRAND CORP9 citations74
US4947055AAug 7, 1990
Base drive circuit for Darlington-connected transistors
SUNDSTRAND CORP15 citations74
US4725741AFeb 16, 1988
Drive circuit for fast switching of Darlington-connected transistors
SUNDSTRAND CORP14 citations74
US5041958AAug 20, 1991
Stepped-waveform inverter with four subinverters
SUNDSTRAND CORP16 citations73
US5027265AJun 25, 1991
Regulator for stepped-waveform inverter
SUNDSTRAND CORP17 citations73
US4651267AMar 17, 1987
Proportional base drive circuit for transistorized bridge inverter
SUNDSTRAND CORP14 citations69
DHYANCHAND P JOHN
3 patentsUS5182535AJan 26, 1993
Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding
DHYANCHAND P JOHN140 citations97
US5055700AOct 8, 1991
Brushless generator having prime mover start capability
DHYANCHAND P JOHN63 citations96
US5177460AJan 5, 1993
Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings
DHYANCHAND P JOHN151 citations95