Otis Elevator Company

Marvin Dehmlow

Andreas Tutat

Ismail Agirman

Alberto Vecchiotti

Michael Mann

Juergen Gewinner

Christoph M Ernecke

Robert Oesterle

Helmut Lothar Schroeder-Brumloop

Ingo Engelhard

Carlo Mezzadri

Herbert Horbrügger

Andreas O Belkner

Burkhard Braasch

Wolfgang Schoppa

Wolfgang Lutz Zemke

Jurgen Dieluweit

Vera Else Marta Steifa

Thomas Gietzold

Hartmut Engler

Axel Friedrich

Richard F Magda

Hebert Horbrügger

Jochen Thomas Richter

Ibrahim Ia Atalmis

Bernd Fischer

The subject-matter disclosed relates to a power control system () for a battery driven elevator; the power control system () comprising a DC battery () for providing electrical power to an electric motor () of the elevator system; and a power controller () including a power converter (), an power inverter (), and a DC intermediate circuit () connected in between the power converter () and the power inverter (); wherein an output of the DC battery () is connected to the DC intermediate circuit ().

Power control system for a battery driven elevator

A drive unit for an elevator system, the drive unit including a multilayer, power circuit board; a first DC link formed in a layer of the power circuit board; a second DC link formed in a layer of the power circuit board; a first switch having a first terminal, the first switch mounted to a surface of the power circuit board; a first via electrically coupling the first terminal to the first DC link; a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and a second via electrically coupling the second terminal to the second DC link; the first via conducting heat from the first switch to the first DC link; the second via conducting heat from the second switch to the second DC link.

Low profile drive unit for elevator system

An elevator safety circuit includes a plurality of relays; safety logic for monitoring status of the plurality of relays, the safety logic generating an output signal in response to the status of the plurality of relays; and a processor controlling operation of an elevator drive in response to the output signal; wherein at least one of the relays is a forced guided relay and at least one of the relays is other than a forced guided relay.

Elevator safety circuit including non forced guided relay

An exemplary elevator machine includes a motor that operates in a first mode to move an elevator car and in a second mode to generate power. A line reactor is associated with the motor for delivering power generated by the motor operating in the second mode. The line reactor includes an air core inductor.

Elevator regenerative drive including an air core inductor

An elevator system and associated method includes power control for operating an elevator () in an emergency mode wherein the elevator () includes a car (), a drive motor (), a motor drive unit () which supplies power to the drive motor () and controls the same and an emergency power supply (). The motor drive unit () has a predetermined normal operation switching frequency. In an emergency mode, power is supplied to the motor from the emergency power supply () while the motor drive unit is in an emergency mode. An actual emergency operation condition characteristic is determined for setting the switching frequency of the motor drive unit () dependent on the actual emergency operation condition characteristic.

Elevator system and associated method including power control for operating an elevator in an emergency mode

A control circuit selectively energizes a load, such as an elevator or escalator brake (). The circuit includes a transformer () with a primary-winding connected to a series with a semiconductor switch () that is driven by a pulse width modulation (PWM) controller. Power to the PWM controller is supplied through safety relay contacts (A,B). When the load is to be energized, the safety relay contacts are closed and the PWM controller drives the semiconductor switch to supply energy through the transformer to the secondary circuit. A command signal to secondary circuitry () causes power in the secondary to be applied to the load (). If the safety relay contacts open, the PWM controller turns off and power is no longer delivered to the secondary circuit and the load.

Safe control of a brake using low power control devices

A power supply for an elevator drive includes a voltage input, a comparator for comparing the input voltage with a predetermined threshold, a transformer having a primary winding and a secondary winding connected to the elevator drive. The transformer has a single tapped primary winding. When the input voltage exceeds the predetermined threshold input, the comparator output causes power to be supplied to the primary winding via one of an end of the winding or the tapping of the winding, and when the input voltage is below the predetermined threshold, input power is supplied to the primary winding via the other of the end of the primary winding and the tapping of the winding.

Elevator rescue operation control system including selective transformer winding energization

A chassis ( ) for mounting component units ( ) of an electric switch cabinet for elevators and escalators, comprising at least one shaped part ( ) serving as main supporting member, said shaped part being composed with a plastics material of lasting resetting force with respect to compression and being provided with at least one receiving recess ( ) for receiving a component unit ( ) of a first type in substantially form-locking manner, and comprising at least one mounting rail ( ) serving as auxiliary supporting member and anchored in the shaped part ( ), said mounting rail ( ), at least over a predetermined partial length thereof, being accessible in a free space ( ) of the shaped part ( ) for mounting at least one component unit ( ) of a second type to said mounting rail ( ), with said free space ( ) being designed to selectively receive component units of the second type in different numbers, shapes and sizes.

Chassis for mounting component units of an electric switch cabinet for elevators and escalators

A load compensation calibration method for an elevator controller includes the steps of moving an elevator car in a first direction, the first direction a first creep speed region; determining the time to travel a given distance; during the first run; determining a first actual creep speed of the first creep speed region; determining a difference between a dictated creep speed and the first actual creep speed; determining a first compensation frequency for minimizing the difference between the dictated creep speed and the first actual creep second; moving the elevator car in a second direction, the speed direction including a second creep speed region; determining the time to travel a given distance during the second run; determining a second actual creep speed of the second creep speed region; determining a difference between a dictated creep speed and the second actual creep speed; determining a second compensation frequency for minimizing the difference between the dictated creep speed and the second actual creep speed; and creating a load compensation characteristic in response to the time to travel a given distance and the first and second compensation frequencies.

Calibration routine with adaptive load compensation

Growing community of inventors

Berlin, Germany

Marvin Dehmlow