Inventor
CZERWINSKI CHRISTOPHER S
US9 patents
⚠️ This page may combine multiple inventors who share the name “CZERWINSKI CHRISTOPHER S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OTIS ELEVATOR CO
7 patentsUS6166930ADec 26, 2000
Reduced common voltage in a DC matrix converter
OTIS ELEVATOR CO58 citations94
USRE38439EFeb 24, 2004
Control of a DC matrix converter
OTIS ELEVATOR CO33 citations91
US6459599B1Oct 1, 2002
Determining phase of AC mains in PWM controlled converters without voltage sensors
OTIS ELEVATOR CO30 citations91
US6058028AMay 2, 2000
Control of a DC matrix converter
OTIS ELEVATOR CO30 citations91
US6483271B1Nov 19, 2002
Motor drive parameters
OTIS ELEVATOR CO24 citations90
US5808240ASep 15, 1998
Low-inductance planar bus arrangement
OTIS ELEVATOR CO17 citations82
US10513414B2Dec 24, 2019
System and method of maintaining performance of a system
OTIS ELEVATOR CO0 citations50