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Another energy-saving improvement is the regenerative drive, [51] which works analogously to regenerative braking in vehicles, using the elevator's electric motor as a generator to capture some of the gravitational potential energy of descent of a full cab (heavier than its counterweight) or ascent of an empty cab (lighter than its ...
A traction motor is an electric motor used for propulsion of a ... and other electric vehicles including electric milk floats, trolleybuses, elevators, roller ...
The Mitsubishi Electric-owned Solae Test Tower (173 m) in Inazawa City, Japan, is the world's 4th tallest elevator testing tower after Hyundai elevator test tower at Icheon plant (205 m) South Korea, the Kone Tytyri test tower (235 m) and the Rottweil Test Tower (246 m).
A linear motor is an electric motor that has had its stator and rotor "unrolled", thus, instead of producing a torque , it produces a linear force along its length. However, linear motors are not necessarily straight. Characteristically, a linear motor's active section has ends, whereas more conventional motors are arranged as a continuous loop.
The Kone EcoSpace elevator is a machine-room-less traction elevator designed for low-rise buildings from 2 to 4 stories as an energy-efficient alternative to hydraulic elevators, and can fit in an existing hydraulic elevator hoistway. Maximum speed is 150 feet per minute (0.76 m/s). [17]
A synchronous electric motor is an AC electric motor in which, at steady state, [1] ... PMSMs have been used as gearless elevator motors since 2000. [9]
Frank Julian Sprague (July 25, 1857 – October 25, 1934) was an American inventor who contributed to the development of the electric motor, electric railways, and electric elevators.
As an example, a 250 kVA motor–generator operating at 300 ampere of full load current will require 1550 ampere of in-rush current during a re-closure after 5 seconds. This example used a fixed mounted flywheel sized to result in a 1 ⁄ 2 Hz per second slew rate. The motor–generator was a vertical type two-bearing machine with oil-bath ...
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