Gearless lift machine-motors driven by synchronous motor with magnet excitation have advantages and advantages that are not comparable to traditional systems in many areas. Thanks to the high-precision absolute encoder coupled to the motor and the closed-loop drive system providing precise control, it provides excellent comfort during take-off, stopping and cruising.
Thanks to much more efficient torque and speed control compared to asynchronous motors, the programmed speed time curve is monitored with great accuracy in all load conditions and provides precise accuracy in floor alignment. Rope and pulley wear are considerably lower than in classical systems, as the peaks between the rope pulley are kept to a minimum by soft starting and stopping.
The fact that the gear group has been completely removed has greatly reduced the need for maintenance and repair. Periodic oil change, problems that may arise as a consequence of running under inadequate lubrication, problems with sound and vibration, and faults have completely disappeared in gearless systems. It is also eco-friendly due to the lack of waste oil.
In addition to comfort, synchronous motorless gearless drives with magnet excitation are the most important advantages compared to systems designed with conventional asynchronous motors and screw reducers. It is possible to select a smaller engine power of up to 40% compared to conventional systems for the same driving power requirement (same cruising speed and carrying capacity) as when the gear group is raised from the center. This reduction in engine size allows the driver, switchgear, cable and other components to shrink in the same way. Especially in synchronous motors with magnet excitation, which are used in 2: 1 suspension systems and which rotate at a relatively high speed, the energy dissipation (the mechanical energy conversion rate of the spent electrical energy) is higher than the asynchronous motors. This allows the gearless system to consume 40% less energy than conventional energy consumption of electricity in continuous use.
In an arena where energy efficiency is important and even regulated by law, this very important advantage should cause the gearless systems to take a step forward, preference, and even encourage. It should not be forgotten that the cheapest energy is saved, not spent. An even more interesting feature of the gearless systems is that the braking energy that is generated when the unbalanced weight acts in the direction of travel by allowing the driver to be used can be fed back into the network and the net energy consumption can be further reduced. In the near future, this important feature should not be overlooked, as it is anticipated that more and more driver producers will develop driver types that will allow this type of work.
Gearless machine systems are suitable for high speed and machine roomless (MRL) installations due to their compact construction and quiet operation. The electromechanical brake coupled to the motor provides high safety. Since these brakes can be used as a safety component in the uncontrolled upward movement of the cabin, there is no need to use an unrestricted up-shift braking brake.