公开(公告)号：US20200346889A1

公开(公告)日：2020-11-05

申请号：US16730101

申请日：2019-12-30

Applicant: Otis Elevator Company

Inventor： Stephan Glessner ,  Herbert Horbrugger ,  Andrew The ,  Uwe Schoenauer

IPC: B66B1/32 ,  H02M7/00

Abstract: A regenerative elevator drive (2) is arranged to receive power from, and supply regenerative energy to, an external power supply (4, 10) and is arranged to direct excess regenerative energy through a dynamic braking resistor (20). An inverter (16) is arranged to receive a DC voltage, derived from the external power supply (4, 10), and to convert the DC voltage to an AC voltage for output to an external motor (22). A DC link capacitor (14) is connected across the input of the inverter (16). A circuit breaker unit (54) is arranged to switch between a first state which provides a connection between the inverter (16) and the external power supply (4, 10), and a second state which disconnects the inverter (16) from the external power supply (4,10).

公开(公告)号：US20250011130A1

公开(公告)日：2025-01-09

申请号：US18746336

申请日：2024-06-18

Applicant: OTIS ELEVATOR COMPANY

Inventor： Jan Ruhnke ,  Andrew The

IPC: B66B5/00 ,  B66B1/06 ,  B66B1/46 ,  B66B1/52 ,  B66B11/02

Abstract: An elevator system is provided which comprises an elevator shaft, an elevator car located within the elevator shaft and comprising an operational compartment and a top structure located above the operational compartment, and a controller. The controller is arranged to control the elevator car to move in the elevator shaft such that the operational compartment serves a plurality of landings in response to elevator service requests. The controller receives a top structure access command, and in response to receiving the top structure access command, controls the elevator car to move in the elevator shaft such that the top structure is aligned with a landing of the plurality of landings.