Inventor
NAGARAJAN PRASANNA
US8 patents
Patents
8 patentsUS10680538B2Jun 9, 2020
Emergency braking for a drive system
OTIS ELEVATOR CO4 citations70
US11296623B2Apr 5, 2022
Emergency braking for a drive system
OTIS ELEVATOR CO0 citations59
US11040848B2Jun 22, 2021
Elevator machine brake delay control
OTIS ELEVATOR CO0 citations56
US11866295B2Jan 9, 2024
Active braking for immediate stops
OTIS ELEVATOR CO0 citations50
US10287131B2May 14, 2019
Elevator drive control to protect drive components from moisture
OTIS ELEVATOR CO0 citations50
US11014778B2May 25, 2021
Rescue control and method of operating an elevator system including a permanent magnet (PM) synchronous motor drive system
OTIS ELEVATOR CO0 citations48
US10513413B2Dec 24, 2019
PWM strategy for regenerative multilevel drive
OTIS ELEVATOR CO0 citations40
US9809418B2Nov 7, 2017
Advanced smooth rescue operation
OTIS ELEVATOR CO0 citations39